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Groups > linux.kernel > #1302174 > unrolled thread
| Started by | mchristi@redhat.com |
|---|---|
| First post | 2016-01-05 22:00 +0100 |
| Last post | 2016-01-10 01:50 +0100 |
| Articles | 20 on this page of 42 — 8 participants |
Back to article view | Back to linux.kernel
[PATCH 00/35 v2] separate operations from flags in the bio/request structs mchristi@redhat.com - 2016-01-05 22:00 +0100
[PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH mchristi@redhat.com - 2016-01-05 22:00 +0100
Re: [PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH kbuild test robot <lkp@intel.com> - 2016-01-06 01:00 +0100
[PATCH 21/35] bcache: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields mchristi@redhat.com - 2016-01-05 22:10 +0100
Re: [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields "Martin K. Petersen" <martin.petersen@oracle.com> - 2016-01-07 00:20 +0100
Re: [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields Christoph Hellwig <hch@infradead.org> - 2016-01-09 14:40 +0100
Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields Mike Christie <michaelc@cs.wisc.edu> - 2016-01-10 02:00 +0100
Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields Mike Christie <michaelc@cs.wisc.edu> - 2016-01-10 02:30 +0100
Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields Christoph Hellwig <hch@infradead.org> - 2016-01-10 08:20 +0100
Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields Christoph Hellwig <hch@infradead.org> - 2016-01-10 08:20 +0100
[PATCH 22/35] drbd: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 13/35] xfs: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
Re: [PATCH 13/35] xfs: set bi_op to REQ_OP Dave Chinner <david@fromorbit.com> - 2016-01-07 04:20 +0100
[PATCH 14/35] hfsplus: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 15/35] mpage: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 28/35] blktrace: get op from req->op/bio->bi_op mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 18/35] pm: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 12/35] gfs2: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 19/35] dm: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 24/35] xen: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 10/35] btrfs: don't pass rq_flag_bits if there is a bio mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 27/35] drivers: set request op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 23/35] md/raid: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 09/35] btrfs: update __btrfs_map_block for bi_op transition mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 16/35] nilfs: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 25/35] target: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
Re: [PATCH 25/35] target: set bi_op to REQ_OP "Nicholas A. Bellinger" <nab@linux-iscsi.org> - 2016-01-06 20:10 +0100
[PATCH 17/35] ocfs2: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:10 +0100
[PATCH 07/35] btrfs: have submit_one_bio users setup bio bi_op mchristi@redhat.com - 2016-01-05 22:20 +0100
[PATCH 06/35] direct-io: set bi_op to REQ_OP mchristi@redhat.com - 2016-01-05 22:20 +0100
[PATCH 08/35] btrfs: set bi_op tp REQ_OP mchristi@redhat.com - 2016-01-05 22:20 +0100
[PATCH 05/35] fs: have ll_rw_block users pass in op and flags separately mchristi@redhat.com - 2016-01-05 22:20 +0100
Re: [PATCH 05/35] fs: have ll_rw_block users pass in op and flags separately kbuild test robot <lkp@intel.com> - 2016-01-06 00:30 +0100
[PATCH 04/35] fs: have submit_bh users pass in op and flags separately mchristi@redhat.com - 2016-01-05 22:20 +0100
Re: [PATCH 00/35 v2] separate operations from flags in the bio/request structs "Martin K. Petersen" <martin.petersen@oracle.com> - 2016-01-07 02:50 +0100
Re: [PATCH 00/35 v2] separate operations from flags in the bio/request structs Dave Chinner <david@fromorbit.com> - 2016-01-07 04:20 +0100
Re: [PATCH 00/35 v2] separate operations from flags in the bio/request structs Christoph Hellwig <hch@infradead.org> - 2016-01-08 14:40 +0100
Re: [PATCH 00/35 v2] separate operations from flags in the bio/request structs Mike Christie <michaelc@cs.wisc.edu> - 2016-01-08 22:00 +0100
Re: [PATCH 00/35 v2] separate operations from flags in the bio/request structs Mike Snitzer <snitzer@redhat.com> - 2016-01-09 00:10 +0100
Re: [PATCH 01/35] block/fs/drivers: remove rw argument from submit_bio Christoph Hellwig <hch@infradead.org> - 2016-01-09 14:40 +0100
Re: [PATCH 01/35] block/fs/drivers: remove rw argument from submit_bio Mike Christie <michaelc@cs.wisc.edu> - 2016-01-10 01:50 +0100
Page 1 of 3 [1] 2 3 Next page →
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:00 +0100 |
| Subject | [PATCH 00/35 v2] separate operations from flags in the bio/request structs |
| Message-ID | <qNGRY-860-9@gated-at.bofh.it> |
The following patches begin to cleanup the request->cmd_flags and bio->bi_rw mess. We currently use cmd_flags to specify the operation, attributes and state of the request. For bi_rw we use it for similar info and also the priority but then also have another bi_flags field for state. At some point, we abused them so much we just made cmd_flags 64 bits, so we could add more. The following patches seperate the operation (read, write discard, flush, etc) from cmd_flags/bi_rw. This patchset was made against linux-next from today Jan 5 2016. (git tag next-20160105). v2. 1. Dropped arguments from submit_bio, and had callers setup bio. 2. Add REQ_OP_FLUSH for request_fn users and renamed REQ_FLUSH to REQ_PREFLUSH for make_request_fn users. 3. Dropped bio/rq_data_dir functions, and added a op_is_write function instead. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:00 +0100 |
| Subject | [PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH |
| Message-ID | <qNGRZ-860-45@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
To avoid confusion between REQ_OP_FLUSH, which is handled by
request_fn drivers, and upper layers requesting the block layer
perform a flush sequence along with possibly a WRITE, this patch
renames REQ_FLUSH to REQ_PREFLUSH.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
Documentation/block/writeback_cache_control.txt | 31 +++++++++++++------------
block/blk-core.c | 12 +++++-----
block/blk-flush.c | 4 ++--
block/blk-mq.c | 4 ++--
drivers/block/drbd/drbd_actlog.c | 2 +-
drivers/block/drbd/drbd_main.c | 2 +-
drivers/block/drbd/drbd_receiver.c | 2 +-
drivers/block/drbd/drbd_req.c | 2 +-
drivers/md/bcache/journal.c | 2 +-
drivers/md/bcache/request.c | 8 +++----
drivers/md/dm-cache-target.c | 9 +++----
drivers/md/dm-crypt.c | 7 +++---
drivers/md/dm-era-target.c | 4 ++--
drivers/md/dm-io.c | 2 +-
drivers/md/dm-log-writes.c | 2 +-
drivers/md/dm-raid1.c | 5 ++--
drivers/md/dm-region-hash.c | 4 ++--
drivers/md/dm-snap.c | 6 ++---
drivers/md/dm-stripe.c | 2 +-
drivers/md/dm-thin.c | 8 +++----
drivers/md/dm.c | 12 +++++-----
drivers/md/linear.c | 2 +-
drivers/md/md.c | 2 +-
drivers/md/multipath.c | 2 +-
drivers/md/raid0.c | 2 +-
drivers/md/raid1.c | 3 ++-
drivers/md/raid10.c | 2 +-
drivers/md/raid5-cache.c | 2 +-
drivers/md/raid5.c | 2 +-
fs/btrfs/check-integrity.c | 8 +++----
fs/jbd2/journal.c | 2 +-
fs/xfs/xfs_buf.c | 2 +-
include/linux/blk_types.h | 8 +++----
include/linux/fs.h | 4 ++--
include/trace/events/f2fs.h | 2 +-
kernel/trace/blktrace.c | 5 ++--
36 files changed, 92 insertions(+), 86 deletions(-)
diff --git a/Documentation/block/writeback_cache_control.txt b/Documentation/block/writeback_cache_control.txt
index ea5550f..9869f18 100644
--- a/Documentation/block/writeback_cache_control.txt
+++ b/Documentation/block/writeback_cache_control.txt
@@ -20,11 +20,11 @@ a forced cache flush, and the Force Unit Access (FUA) flag for requests.
Explicit cache flushes
----------------------
-The REQ_FLUSH flag can be OR ed into the r/w flags of a bio submitted from
+The REQ_PREFLUSH flag can be OR ed into the r/w flags of a bio submitted from
the filesystem and will make sure the volatile cache of the storage device
has been flushed before the actual I/O operation is started. This explicitly
guarantees that previously completed write requests are on non-volatile
-storage before the flagged bio starts. In addition the REQ_FLUSH flag can be
+storage before the flagged bio starts. In addition the REQ_PREFLUSH flag can be
set on an otherwise empty bio structure, which causes only an explicit cache
flush without any dependent I/O. It is recommend to use
the blkdev_issue_flush() helper for a pure cache flush.
@@ -41,21 +41,21 @@ signaled after the data has been committed to non-volatile storage.
Implementation details for filesystems
--------------------------------------
-Filesystems can simply set the REQ_FLUSH and REQ_FUA bits and do not have to
+Filesystems can simply set the REQ_PREFLUSH and REQ_FUA bits and do not have to
worry if the underlying devices need any explicit cache flushing and how
-the Forced Unit Access is implemented. The REQ_FLUSH and REQ_FUA flags
+the Forced Unit Access is implemented. The REQ_PREFLUSH and REQ_FUA flags
may both be set on a single bio.
Implementation details for make_request_fn based block drivers
--------------------------------------------------------------
-These drivers will always see the REQ_FLUSH and REQ_FUA bits as they sit
+These drivers will always see the REQ_PREFLUSH and REQ_FUA bits as they sit
directly below the submit_bio interface. For remapping drivers the REQ_FUA
bits need to be propagated to underlying devices, and a global flush needs
-to be implemented for bios with the REQ_FLUSH bit set. For real device
-drivers that do not have a volatile cache the REQ_FLUSH and REQ_FUA bits
-on non-empty bios can simply be ignored, and REQ_FLUSH requests without
+to be implemented for bios with the REQ_PREFLUSH bit set. For real device
+drivers that do not have a volatile cache the REQ_PREFLUSH and REQ_FUA bits
+on non-empty bios can simply be ignored, and REQ_PREFLUSH requests without
data can be completed successfully without doing any work. Drivers for
devices with volatile caches need to implement the support for these
flags themselves without any help from the block layer.
@@ -65,21 +65,22 @@ Implementation details for request_fn based block drivers
--------------------------------------------------------------
For devices that do not support volatile write caches there is no driver
-support required, the block layer completes empty REQ_FLUSH requests before
-entering the driver and strips off the REQ_FLUSH and REQ_FUA bits from
-requests that have a payload. For devices with volatile write caches the
-driver needs to tell the block layer that it supports flushing caches by
+support required, the block layer completes empty REQ_PREFLUSH requests
+before entering the driver and strips off the REQ_PREFLUSH and REQ_FUA bits
+from requests that have a payload. For devices with volatile write caches
+the driver needs to tell the block layer that it supports flushing caches by
doing:
- blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, sdkp->disk->queue);
and handle empty REQ_OP_FLUSH requests in its prep_fn/request_fn. Note that
-REQ_FLUSH requests with a payload are automatically turned into a sequence
+REQ_PREFLUSH requests with a payload are automatically turned into a sequence
of an empty REQ_OP_FLUSH request followed by the actual write by the block
layer. For devices that also support the FUA bit the block layer needs
to be told to pass through the REQ_FUA bit using:
- blk_queue_flush(sdkp->disk->queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, sdkp->disk->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, sdkp->disk->queue);
and the driver must handle write requests that have the REQ_FUA bit set
in prep_fn/request_fn. If the FUA bit is not natively supported the block
diff --git a/block/blk-core.c b/block/blk-core.c
index bb29230..dbc9082 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1029,7 +1029,7 @@ static bool blk_rq_should_init_elevator(struct bio *bio)
* Flush requests do not use the elevator so skip initialization.
* This allows a request to share the flush and elevator data.
*/
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA))
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA))
return false;
return true;
@@ -1737,7 +1737,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
return BLK_QC_T_NONE;
}
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) {
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) {
spin_lock_irq(q->queue_lock);
where = ELEVATOR_INSERT_FLUSH;
goto get_rq;
@@ -1969,9 +1969,9 @@ generic_make_request_checks(struct bio *bio)
* drivers without flush support don't have to worry
* about them.
*/
- if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ if ((bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) &&
!(blk_queue_flush(q) || blk_queue_fua(q))) {
- bio->bi_rw &= ~(REQ_FLUSH | REQ_FUA);
+ bio->bi_rw &= ~(REQ_PREFLUSH | REQ_FUA);
if (!nr_sectors) {
err = 0;
goto end_io;
@@ -2218,7 +2218,7 @@ int blk_insert_cloned_request(struct request_queue *q, struct request *rq)
*/
BUG_ON(blk_queued_rq(rq));
- if (rq->cmd_flags & (REQ_FLUSH|REQ_FUA))
+ if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
where = ELEVATOR_INSERT_FLUSH;
add_acct_request(q, rq, where);
@@ -3310,7 +3310,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
/*
* rq is already accounted, so use raw insert
*/
- if (rq->cmd_flags & (REQ_FLUSH | REQ_FUA))
+ if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
__elv_add_request(q, rq, ELEVATOR_INSERT_FLUSH);
else
__elv_add_request(q, rq, ELEVATOR_INSERT_SORT_MERGE);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 633f9b3..9cf387c 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -104,7 +104,7 @@ static unsigned int blk_flush_policy(struct request *rq)
policy |= REQ_FSEQ_DATA;
if (blk_queue_flush(q)) {
- if (rq->cmd_flags & REQ_FLUSH)
+ if (rq->cmd_flags & REQ_PREFLUSH)
policy |= REQ_FSEQ_PREFLUSH;
if (!blk_queue_fua(q) && (rq->cmd_flags & REQ_FUA))
policy |= REQ_FSEQ_POSTFLUSH;
@@ -393,7 +393,7 @@ void blk_insert_flush(struct request *rq)
* @policy now records what operations need to be done. Adjust
* REQ_FLUSH and FUA for the driver.
*/
- rq->cmd_flags &= ~REQ_FLUSH;
+ rq->cmd_flags &= ~REQ_PREFLUSH;
if (!blk_queue_fua(q))
rq->cmd_flags &= ~REQ_FUA;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 72a028b..bb376a8 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1244,7 +1244,7 @@ static int blk_mq_direct_issue_request(struct request *rq, blk_qc_t *cookie)
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
- const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ const int is_flush_fua = bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
struct blk_map_ctx data;
struct request *rq;
unsigned int request_count = 0;
@@ -1341,7 +1341,7 @@ done:
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
- const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ const int is_flush_fua = bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
struct blk_plug *plug;
unsigned int request_count = 0;
struct blk_map_ctx data;
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 2fa8534..9f5e00b 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -148,7 +148,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
device->md_io.error = -ENODEV;
if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA, &device->flags))
- op_flags |= REQ_FUA | REQ_FLUSH;
+ op_flags |= REQ_FUA | REQ_PREFLUSH;
op_flags |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 7bc78ab..88543d1 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1608,7 +1608,7 @@ static u32 bio_flags_to_wire(struct drbd_connection *connection, struct bio *bio
if (connection->agreed_pro_version >= 95)
return (bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
(bio->bi_rw & REQ_FUA ? DP_FUA : 0) |
- (bio->bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
+ (bio->bi_rw & REQ_PREFLUSH ? DP_FLUSH : 0) |
(bio->bi_op == REQ_OP_DISCARD ? DP_DISCARD : 0);
else
return bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 880de0d..752948f 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -2159,7 +2159,7 @@ static unsigned long wire_flags_to_bio_flags(u32 dpf)
{
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
- (dpf & DP_FLUSH ? REQ_FLUSH : 0);
+ (dpf & DP_FLUSH ? REQ_PREFLUSH : 0);
}
static unsigned long wire_flags_to_bio_op(u32 dpf)
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 2255dcf..eef6e95 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1132,7 +1132,7 @@ static int drbd_process_write_request(struct drbd_request *req)
* replicating, in which case there is no point. */
if (unlikely(req->i.size == 0)) {
/* The only size==0 bios we expect are empty flushes. */
- D_ASSERT(device, req->master_bio->bi_rw & REQ_FLUSH);
+ D_ASSERT(device, req->master_bio->bi_rw & REQ_PREFLUSH);
if (remote)
_req_mod(req, QUEUE_AS_DRBD_BARRIER);
return remote;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 68fa0f0..6e0a330 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -627,7 +627,7 @@ static void journal_write_unlocked(struct closure *cl)
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
bio->bi_op = REQ_OP_WRITE;
- bio->bi_rw = REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
+ bio->bi_rw = REQ_SYNC|REQ_META|REQ_PREFLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index be8cd63f..3947114 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -205,10 +205,10 @@ static void bch_data_insert_start(struct closure *cl)
return bch_data_invalidate(cl);
/*
- * Journal writes are marked REQ_FLUSH; if the original write was a
+ * Journal writes are marked REQ_PREFLUSH; if the original write was a
* flush, it'll wait on the journal write.
*/
- bio->bi_rw &= ~(REQ_FLUSH|REQ_FUA);
+ bio->bi_rw &= ~(REQ_PREFLUSH|REQ_FUA);
do {
unsigned i;
@@ -668,7 +668,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->iop.write_prio = 0;
s->iop.error = 0;
s->iop.flags = 0;
- s->iop.flush_journal = (bio->bi_rw & (REQ_FLUSH|REQ_FUA)) != 0;
+ s->iop.flush_journal = (bio->bi_rw & (REQ_PREFLUSH|REQ_FUA)) != 0;
s->iop.wq = bcache_wq;
return s;
@@ -920,7 +920,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
bch_writeback_add(dc);
s->iop.bio = bio;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
/* Also need to send a flush to the backing device */
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index fe222c0..3c9aebe 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -788,7 +788,7 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
- !(bio->bi_rw & (REQ_FUA | REQ_FLUSH)) &&
+ !(bio->bi_rw & (REQ_FUA | REQ_PREFLUSH)) &&
bio->bi_op != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
@@ -830,7 +830,7 @@ static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio)
static int bio_triggers_commit(struct cache *cache, struct bio *bio)
{
- return bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ return bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
}
/*
@@ -1063,7 +1063,8 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
- return bio->bi_op == REQ_OP_DISCARD || bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ return bio->bi_op == REQ_OP_DISCARD ||
+ bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -1974,7 +1975,7 @@ static void process_deferred_bios(struct cache *cache)
bio = bio_list_pop(&bios);
- if (bio->bi_rw & REQ_FLUSH)
+ if (bio->bi_rw & REQ_PREFLUSH)
process_flush_bio(cache, bio);
else if (bio->bi_op == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index b7cbd39..7e39d3c 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1909,11 +1909,12 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
struct crypt_config *cc = ti->private;
/*
- * If bio is REQ_FLUSH or REQ_DISCARD, just bypass crypt queues.
- * - for REQ_FLUSH device-mapper core ensures that no IO is in-flight
+ * If bio is REQ_PREFLUSH or REQ_DISCARD, just bypass crypt queues.
+ * - for REQ_PREFLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_DISCARD caller must use flush if IO ordering matters
*/
- if (unlikely(bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH ||
+ bio->bi_op == REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
bio->bi_iter.bi_sector = cc->start +
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index 665bf32..2faf49d8 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -1540,9 +1540,9 @@ static int era_map(struct dm_target *ti, struct bio *bio)
remap_to_origin(era, bio);
/*
- * REQ_FLUSH bios carry no data, so we're not interested in them.
+ * REQ_PREFLUSH bios carry no data, so we're not interested in them.
*/
- if (!(bio->bi_rw & REQ_FLUSH) &&
+ if (!(bio->bi_rw & REQ_PREFLUSH) &&
(bio_data_dir(bio) == WRITE) &&
!metadata_current_marked(era->md, block)) {
defer_bio(era, bio);
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 790b185..84aa27c 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -381,7 +381,7 @@ static void dispatch_io(int op, int op_flags, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
- if (where[i].count || (op_flags & REQ_FLUSH))
+ if (where[i].count || (op_flags & REQ_PREFLUSH))
do_region(op, op_flags, i, where + i, dp, io);
}
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 813bb4d..0848a43 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -555,7 +555,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
struct bio_vec bv;
size_t alloc_size;
int i = 0;
- bool flush_bio = (bio->bi_rw & REQ_FLUSH);
+ bool flush_bio = (bio->bi_rw & REQ_PREFLUSH);
bool fua_bio = (bio->bi_rw & REQ_FUA);
bool discard_bio = (bio->bi_op == REQ_OP_DISCARD);
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 54cc0c7..9f34923 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -704,7 +704,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
bio_list_init(&requeue);
while ((bio = bio_list_pop(writes))) {
- if ((bio->bi_rw & REQ_FLUSH) ||
+ if ((bio->bi_rw & REQ_PREFLUSH) ||
(bio->bi_op == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
@@ -1253,7 +1253,8 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- if (!(bio->bi_rw & REQ_FLUSH) && bio->bi_op != REQ_OP_DISCARD)
+ if (!(bio->bi_rw & REQ_PREFLUSH) &&
+ bio->bi_op != REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
}
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index ce4af57..d257428 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -398,7 +398,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio *bio)
region_t region = dm_rh_bio_to_region(rh, bio);
int recovering = 0;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
rh->flush_failure = 1;
return;
}
@@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
- if (bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)
+ if (bio->bi_rw & REQ_PREFLUSH || bio->bi_op == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index f68d0ae..6e82975 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1681,7 +1681,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
bio->bi_bdev = s->cow->bdev;
return DM_MAPIO_REMAPPED;
}
@@ -1800,7 +1800,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct bio *bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
if (!dm_bio_get_target_bio_nr(bio))
bio->bi_bdev = s->origin->bdev;
else
@@ -2286,7 +2286,7 @@ static int origin_map(struct dm_target *ti, struct bio *bio)
bio->bi_bdev = o->dev->bdev;
- if (unlikely(bio->bi_rw & REQ_FLUSH))
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH))
return DM_MAPIO_REMAPPED;
if (bio_rw(bio) != WRITE)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 12b1630..e6f330c 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -286,7 +286,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
uint32_t stripe;
unsigned target_bio_nr;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 1e170e7..5eac816 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -697,7 +697,7 @@ static void remap_to_origin(struct thin_c *tc, struct bio *bio)
static int bio_triggers_commit(struct thin_c *tc, struct bio *bio)
{
- return (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ return (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) &&
dm_thin_changed_this_transaction(tc->td);
}
@@ -868,7 +868,7 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
@@ -1647,7 +1647,7 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
@@ -2560,7 +2560,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 90135b6..5336148c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -964,12 +964,12 @@ static void dec_pending(struct dm_io *io, int error)
if (io_error == DM_ENDIO_REQUEUE)
return;
- if ((bio->bi_rw & REQ_FLUSH) && bio->bi_iter.bi_size) {
+ if ((bio->bi_rw & REQ_PREFLUSH) && bio->bi_iter.bi_size) {
/*
* Preflush done for flush with data, reissue
- * without REQ_FLUSH.
+ * without REQ_PREFLUSH.
*/
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
@@ -1428,7 +1428,7 @@ EXPORT_SYMBOL_GPL(dm_set_target_max_io_len);
/*
* A target may call dm_accept_partial_bio only from the map routine. It is
- * allowed for all bio types except REQ_FLUSH.
+ * allowed for all bio types except REQ_PREFLUSH.
*
* dm_accept_partial_bio informs the dm that the target only wants to process
* additional n_sectors sectors of the bio and the rest of the data should be
@@ -1458,7 +1458,7 @@ void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors)
{
struct dm_target_io *tio = container_of(bio, struct dm_target_io, clone);
unsigned bi_size = bio->bi_iter.bi_size >> SECTOR_SHIFT;
- BUG_ON(bio->bi_rw & REQ_FLUSH);
+ BUG_ON(bio->bi_rw & REQ_PREFLUSH);
BUG_ON(bi_size > *tio->len_ptr);
BUG_ON(n_sectors > bi_size);
*tio->len_ptr -= bi_size - n_sectors;
@@ -1733,7 +1733,7 @@ static void __split_and_process_bio(struct mapped_device *md,
start_io_acct(ci.io);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
ci.bio = &ci.md->flush_bio;
ci.sector_count = 0;
error = __send_empty_flush(&ci);
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index aad82c7..657053e 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -221,7 +221,7 @@ static void linear_make_request(struct mddev *mddev, struct bio *bio)
struct bio *split;
sector_t start_sector, end_sector, data_offset;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7e16813..4f666d1 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -422,7 +422,7 @@ static void md_submit_flush_data(struct work_struct *ws)
/* an empty barrier - all done */
bio_endio(bio);
else {
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
mddev->pers->make_request(mddev, bio);
}
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 7331a80..b651af1 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -111,7 +111,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio)
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index e0d1b8c..f95463d 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -458,7 +458,7 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
struct md_rdev *tmp_dev;
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2a42daa..2856b50 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1056,7 +1056,8 @@ static void make_request(struct mddev *mddev, struct bio * bio)
const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
- const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH | REQ_FUA));
+ const unsigned long do_flush_fua = (bio->bi_rw &
+ (REQ_PREFLUSH | REQ_FUA));
const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 1cfc061..6171ff7 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1452,7 +1452,7 @@ static void make_request(struct mddev *mddev, struct bio *bio)
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 311b7f2..c9f4ed5 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -536,7 +536,7 @@ int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio)
bio_endio(bio);
return 0;
}
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
return -EAGAIN;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index aafd49e..2109881 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5154,7 +5154,7 @@ static void make_request(struct mddev *mddev, struct bio * bi)
DEFINE_WAIT(w);
bool do_prepare;
- if (unlikely(bi->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bi->bi_rw & REQ_PREFLUSH)) {
int ret = r5l_handle_flush_request(conf->log, bi);
if (ret == 0)
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 1623d11..e63ad0f 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2237,7 +2237,7 @@ static void btrfsic_bio_end_io(struct bio *bp)
block->dev_bytenr, block->mirror_num);
next_block = block->next_in_same_bio;
block->iodone_w_error = iodone_w_error;
- if (block->submit_bio_bh_rw & REQ_FLUSH) {
+ if (block->submit_bio_bh_rw & REQ_PREFLUSH) {
dev_state->last_flush_gen++;
if ((dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
@@ -2273,7 +2273,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
block->dev_bytenr, block->mirror_num);
block->iodone_w_error = iodone_w_error;
- if (block->submit_bio_bh_rw & REQ_FLUSH) {
+ if (block->submit_bio_bh_rw & REQ_PREFLUSH) {
dev_state->last_flush_gen++;
if ((dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
@@ -2926,7 +2926,7 @@ int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh)
btrfsic_process_written_block(dev_state, dev_bytenr,
&bh->b_data, 1, NULL,
NULL, bh, op_flags);
- } else if (NULL != dev_state && (op_flags & REQ_FLUSH)) {
+ } else if (NULL != dev_state && (op_flags & REQ_PREFLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
@@ -3024,7 +3024,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
kunmap(bio->bi_io_vec[i].bv_page);
}
kfree(mapped_datav);
- } else if (NULL != dev_state && (bio->bi_rw & REQ_FLUSH)) {
+ } else if (NULL != dev_state && (bio->bi_rw & REQ_PREFLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 7104d76..2e4760b 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1331,7 +1331,7 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
trace_jbd2_write_superblock(journal, write_flags);
if (!(journal->j_flags & JBD2_BARRIER))
- write_flags &= ~(REQ_FUA | REQ_FLUSH);
+ write_flags &= ~(REQ_FUA | REQ_PREFLUSH);
lock_buffer(bh);
if (buffer_write_io_error(bh)) {
/*
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 4cfba72..d355483 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1235,7 +1235,7 @@ _xfs_buf_ioapply(
if (bp->b_flags & XBF_FUA)
op_flags |= REQ_FUA;
if (bp->b_flags & XBF_FLUSH)
- op_flags |= REQ_FLUSH;
+ op_flags |= REQ_PREFLUSH;
/*
* Run the write verifier callback function if it exists. If
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b4ef8d7..d637d8b 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -158,7 +158,7 @@ enum rq_flag_bits {
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
__REQ_FUA, /* forced unit access */
- __REQ_FLUSH, /* request for cache flush */
+ __REQ_PREFLUSH, /* request for cache flush */
/* bio only flags */
__REQ_RAHEAD, /* read ahead, can fail anytime */
@@ -202,12 +202,12 @@ enum rq_flag_bits {
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
(REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
- REQ_FLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
+ REQ_PREFLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
#define REQ_CLONE_MASK REQ_COMMON_MASK
/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
- (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA | REQ_FLUSH_SEQ)
+ (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_PREFLUSH | REQ_FUA | REQ_FLUSH_SEQ)
#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
#define REQ_THROTTLED (1ULL << __REQ_THROTTLED)
@@ -225,7 +225,7 @@ enum rq_flag_bits {
#define REQ_PREEMPT (1ULL << __REQ_PREEMPT)
#define REQ_ALLOCED (1ULL << __REQ_ALLOCED)
#define REQ_COPY_USER (1ULL << __REQ_COPY_USER)
-#define REQ_FLUSH (1ULL << __REQ_FLUSH)
+#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
#define REQ_FLUSH_SEQ (1ULL << __REQ_FLUSH_SEQ)
#define REQ_IO_STAT (1ULL << __REQ_IO_STAT)
#define REQ_MIXED_MERGE (1ULL << __REQ_MIXED_MERGE)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d57a5b5..7197027 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -203,9 +203,9 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map, int uptodate);
#define READ_SYNC REQ_SYNC
#define WRITE_SYNC (REQ_SYNC | REQ_NOIDLE)
#define WRITE_ODIRECT REQ_SYNC
-#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
+#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH)
#define WRITE_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FUA)
-#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
+#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH | REQ_FUA)
/*
* Attribute flags. These should be or-ed together to figure out what
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index ed3fc87..9df1cd8 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -33,7 +33,7 @@ TRACE_DEFINE_ENUM(SSR);
TRACE_DEFINE_ENUM(__REQ_RAHEAD);
TRACE_DEFINE_ENUM(__REQ_SYNC);
TRACE_DEFINE_ENUM(__REQ_NOIDLE);
-TRACE_DEFINE_ENUM(__REQ_FLUSH);
+TRACE_DEFINE_ENUM(__REQ_PREFLUSH);
TRACE_DEFINE_ENUM(__REQ_FUA);
TRACE_DEFINE_ENUM(__REQ_PRIO);
TRACE_DEFINE_ENUM(__REQ_META);
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 3a54c83..c94dec7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -189,6 +189,7 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
BLK_TC_ACT(BLK_TC_WRITE) };
#define BLK_TC_RAHEAD BLK_TC_AHEAD
+#define BLK_TC_PREFLUSH BLK_TC_FLUSH
/* The ilog2() calls fall out because they're constant */
#define MASK_TC_BIT(rw, __name) ((rw & REQ_ ## __name) << \
@@ -219,7 +220,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
what |= MASK_TC_BIT(op_flags, SYNC);
what |= MASK_TC_BIT(op_flags, RAHEAD);
what |= MASK_TC_BIT(op_flags, META);
- what |= MASK_TC_BIT(op_flags, FLUSH);
+ what |= MASK_TC_BIT(op_flags, PREFLUSH);
what |= MASK_TC_BIT(op_flags, FUA);
if (op == REQ_OP_DISCARD)
what |= BLK_TC_ACT(BLK_TC_DISCARD);
@@ -1777,7 +1778,7 @@ void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
- if (rw & REQ_FLUSH ||
+ if (rw & REQ_PREFLUSH ||
op == REQ_OP_FLUSH)
rwbs[i++] = 'F';
--
1.8.3.1
--
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| From | kbuild test robot <lkp@intel.com> |
|---|---|
| Date | 2016-01-06 01:00 +0100 |
| Subject | Re: [PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH |
| Message-ID | <qNJGa-1vi-5@gated-at.bofh.it> |
| In reply to | #1302177 |
[Multipart message — attachments visible in raw view] — view raw
Hi Mike,
[auto build test ERROR on next-20160105]
[cannot apply to dm/for-next v4.4-rc8 v4.4-rc7 v4.4-rc6 v4.4-rc8]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/mchristi-redhat-com/separate-operations-from-flags-in-the-bio-request-structs/20160106-052858
config: um-x86_64_defconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=um SUBARCH=x86_64
All errors (new ones prefixed by >>):
arch/um/drivers/ubd_kern.c: In function 'ubd_add':
arch/um/drivers/ubd_kern.c:869:43: error: macro "blk_queue_flush" passed 2 arguments, but takes just 1
blk_queue_flush(ubd_dev->queue, REQ_FLUSH);
^
arch/um/drivers/ubd_kern.c:869:2: error: 'blk_queue_flush' undeclared (first use in this function)
blk_queue_flush(ubd_dev->queue, REQ_FLUSH);
^
arch/um/drivers/ubd_kern.c:869:2: note: each undeclared identifier is reported only once for each function it appears in
arch/um/drivers/ubd_kern.c: In function 'do_ubd_request':
>> arch/um/drivers/ubd_kern.c:1293:24: error: 'REQ_FLUSH' undeclared (first use in this function)
if (req->cmd_flags & REQ_FLUSH) {
^
vim +/REQ_FLUSH +1293 arch/um/drivers/ubd_kern.c
a0044bdf Jeff Dike 2007-05-06 1287 dev->start_sg = 0;
a0044bdf Jeff Dike 2007-05-06 1288 dev->end_sg = blk_rq_map_sg(q, req, dev->sg);
a0044bdf Jeff Dike 2007-05-06 1289 }
a0044bdf Jeff Dike 2007-05-06 1290
a0044bdf Jeff Dike 2007-05-06 1291 req = dev->request;
805f11a0 Richard Weinberger 2013-08-18 1292
805f11a0 Richard Weinberger 2013-08-18 @1293 if (req->cmd_flags & REQ_FLUSH) {
805f11a0 Richard Weinberger 2013-08-18 1294 io_req = kmalloc(sizeof(struct io_thread_req),
805f11a0 Richard Weinberger 2013-08-18 1295 GFP_ATOMIC);
805f11a0 Richard Weinberger 2013-08-18 1296 if (io_req == NULL) {
:::::: The code at line 1293 was first introduced by commit
:::::: 805f11a0d515658106bfbfadceff0eb30bd90ad2 um: ubd: Add REQ_FLUSH suppport
:::::: TO: Richard Weinberger <richard@nod.at>
:::::: CC: Richard Weinberger <richard@nod.at>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 21/35] bcache: set bi_op to REQ_OP |
| Message-ID | <qNH1D-8oZ-5@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has bcache set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/bcache/btree.c | 2 ++
drivers/md/bcache/debug.c | 2 ++
drivers/md/bcache/io.c | 2 +-
drivers/md/bcache/journal.c | 7 ++++---
drivers/md/bcache/movinggc.c | 2 +-
drivers/md/bcache/request.c | 9 +++++----
drivers/md/bcache/super.c | 26 +++++++++++++++-----------
drivers/md/bcache/writeback.c | 4 ++--
8 files changed, 32 insertions(+), 22 deletions(-)
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 22b9e34..752a44f 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -295,6 +295,7 @@ static void bch_btree_node_read(struct btree *b)
closure_init_stack(&cl);
bio = bch_bbio_alloc(b->c);
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = REQ_META|READ_SYNC;
bio->bi_iter.bi_size = KEY_SIZE(&b->key) << 9;
bio->bi_end_io = btree_node_read_endio;
@@ -397,6 +398,7 @@ static void do_btree_node_write(struct btree *b)
b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
+ b->bio->bi_op = REQ_OP_WRITE;
b->bio->bi_rw = REQ_META|WRITE_SYNC|REQ_FUA;
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
bch_bio_map(b->bio, i);
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index db68562..4c48783 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -52,6 +52,7 @@ void bch_btree_verify(struct btree *b)
bio->bi_bdev = PTR_CACHE(b->c, &b->key, 0)->bdev;
bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw |= REQ_META|READ_SYNC;
bch_bio_map(bio, sorted);
@@ -114,6 +115,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
check = bio_clone(bio, GFP_NOIO);
if (!check)
return;
+ check->bi_op = REQ_OP_READ;
check->bi_rw |= READ_SYNC;
if (bio_alloc_pages(check, GFP_NOIO))
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 86a0bb8..f10a9a0 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -111,7 +111,7 @@ void bch_bbio_count_io_errors(struct cache_set *c, struct bio *bio,
struct bbio *b = container_of(bio, struct bbio, bio);
struct cache *ca = PTR_CACHE(c, &b->key, 0);
- unsigned threshold = bio->bi_rw & REQ_WRITE
+ unsigned threshold = op_is_write(bio->bi_op)
? c->congested_write_threshold_us
: c->congested_read_threshold_us;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index af3f9f7..68fa0f0 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -54,7 +54,7 @@ reread: left = ca->sb.bucket_size - offset;
bio_reset(bio);
bio->bi_iter.bi_sector = bucket + offset;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_iter.bi_size = len << 9;
bio->bi_end_io = journal_read_endio;
@@ -452,7 +452,7 @@ static void do_journal_discard(struct cache *ca)
bio->bi_iter.bi_sector = bucket_to_sector(ca->set,
ca->sb.d[ja->discard_idx]);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_DISCARD;
+ bio->bi_op = REQ_OP_DISCARD;
bio->bi_max_vecs = 1;
bio->bi_io_vec = bio->bi_inline_vecs;
bio->bi_iter.bi_size = bucket_bytes(ca);
@@ -626,7 +626,8 @@ static void journal_write_unlocked(struct closure *cl)
bio_reset(bio);
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index b929fc9..f33860a 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -163,7 +163,7 @@ static void read_moving(struct cache_set *c)
moving_init(io);
bio = &io->bio.bio;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_end_io = read_moving_endio;
if (bio_alloc_pages(bio, GFP_KERNEL))
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 25fa844..cd6837c 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -253,7 +253,7 @@ static void bch_data_insert_start(struct closure *cl)
trace_bcache_cache_insert(k);
bch_keylist_push(&op->insert_keys);
- n->bi_rw |= REQ_WRITE;
+ n->bi_op = REQ_OP_WRITE;
bch_submit_bbio(n, op->c, k, 0);
} while (n != bio);
@@ -383,7 +383,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (mode == CACHE_MODE_NONE ||
(mode == CACHE_MODE_WRITEAROUND &&
- (bio->bi_rw & REQ_WRITE)))
+ op_is_write(bio->bi_op)))
goto skip;
if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) ||
@@ -404,7 +404,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
if (!congested &&
mode == CACHE_MODE_WRITEBACK &&
- (bio->bi_rw & REQ_WRITE) &&
+ op_is_write(bio->bi_op) &&
(bio->bi_rw & REQ_SYNC))
goto rescale;
@@ -657,7 +657,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->cache_miss = NULL;
s->d = d;
s->recoverable = 1;
- s->write = (bio->bi_rw & REQ_WRITE) != 0;
+ s->write = op_is_write(bio->bi_op);
s->read_dirty_data = 0;
s->start_time = jiffies;
@@ -925,6 +925,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
+ flush->bi_op = REQ_OP_WRITE;
flush->bi_rw = WRITE_FLUSH;
flush->bi_bdev = bio->bi_bdev;
flush->bi_end_io = request_endio;
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 9e2eac8..b11f7f4 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -212,7 +212,8 @@ static void __write_super(struct cache_sb *sb, struct bio *bio)
unsigned i;
bio->bi_iter.bi_sector = SB_SECTOR;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META;
bio->bi_iter.bi_size = SB_SIZE;
bch_bio_map(bio, NULL);
@@ -333,7 +334,7 @@ static void uuid_io_unlock(struct closure *cl)
up(&c->uuid_write_mutex);
}
-static void uuid_io(struct cache_set *c, unsigned long rw,
+static void uuid_io(struct cache_set *c, int op, unsigned long op_flags,
struct bkey *k, struct closure *parent)
{
struct closure *cl = &c->uuid_write;
@@ -348,7 +349,8 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
for (i = 0; i < KEY_PTRS(k); i++) {
struct bio *bio = bch_bbio_alloc(c);
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = KEY_SIZE(k) << 9;
bio->bi_end_io = uuid_endio;
@@ -357,12 +359,12 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
bch_submit_bbio(bio, c, k, i);
- if (!(rw & WRITE))
+ if (op != REQ_OP_WRITE)
break;
}
bch_extent_to_text(buf, sizeof(buf), k);
- pr_debug("%s UUIDs at %s", rw & REQ_WRITE ? "wrote" : "read", buf);
+ pr_debug("%s UUIDs at %s", op == REQ_OP_WRITE ? "wrote" : "read", buf);
for (u = c->uuids; u < c->uuids + c->nr_uuids; u++)
if (!bch_is_zero(u->uuid, 16))
@@ -381,7 +383,7 @@ static char *uuid_read(struct cache_set *c, struct jset *j, struct closure *cl)
return "bad uuid pointer";
bkey_copy(&c->uuid_bucket, k);
- uuid_io(c, READ_SYNC, k, cl);
+ uuid_io(c, REQ_OP_READ, READ_SYNC, k, cl);
if (j->version < BCACHE_JSET_VERSION_UUIDv1) {
struct uuid_entry_v0 *u0 = (void *) c->uuids;
@@ -426,7 +428,7 @@ static int __uuid_write(struct cache_set *c)
return 1;
SET_KEY_SIZE(&k.key, c->sb.bucket_size);
- uuid_io(c, REQ_WRITE, &k.key, &cl);
+ uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
closure_sync(&cl);
bkey_copy(&c->uuid_bucket, &k.key);
@@ -498,7 +500,8 @@ static void prio_endio(struct bio *bio)
closure_put(&ca->prio);
}
-static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
+static void prio_io(struct cache *ca, uint64_t bucket, int op,
+ unsigned long op_flags)
{
struct closure *cl = &ca->prio;
struct bio *bio = bch_bbio_alloc(ca->set);
@@ -507,7 +510,8 @@ static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
bio->bi_iter.bi_sector = bucket * ca->sb.bucket_size;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = bucket_bytes(ca);
bio->bi_end_io = prio_endio;
@@ -557,7 +561,7 @@ void bch_prio_write(struct cache *ca)
BUG_ON(bucket == -1);
mutex_unlock(&ca->set->bucket_lock);
- prio_io(ca, bucket, REQ_WRITE);
+ prio_io(ca, bucket, REQ_OP_WRITE, 0);
mutex_lock(&ca->set->bucket_lock);
ca->prio_buckets[i] = bucket;
@@ -599,7 +603,7 @@ static void prio_read(struct cache *ca, uint64_t bucket)
ca->prio_last_buckets[bucket_nr] = bucket;
bucket_nr++;
- prio_io(ca, bucket, READ_SYNC);
+ prio_io(ca, bucket, REQ_OP_READ, READ_SYNC);
if (p->csum != bch_crc64(&p->magic, bucket_bytes(ca) - 8))
pr_warn("bad csum reading priorities");
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index b9346cd..96ddf28 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -183,7 +183,7 @@ static void write_dirty(struct closure *cl)
struct keybuf_key *w = io->bio.bi_private;
dirty_init(w);
- io->bio.bi_rw = WRITE;
+ io->bio.bi_op = REQ_OP_WRITE;
io->bio.bi_iter.bi_sector = KEY_START(&w->key);
io->bio.bi_bdev = io->dc->bdev;
io->bio.bi_end_io = dirty_endio;
@@ -256,7 +256,7 @@ static void read_dirty(struct cached_dev *dc)
io->bio.bi_iter.bi_sector = PTR_OFFSET(&w->key, 0);
io->bio.bi_bdev = PTR_CACHE(dc->disk.c,
&w->key, 0)->bdev;
- io->bio.bi_rw = READ;
+ io->bio.bi_op = REQ_OP_READ;
io->bio.bi_end_io = read_dirty_endio;
if (bio_alloc_pages(&io->bio, GFP_KERNEL))
--
1.8.3.1
--
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[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qNH1D-8oZ-9@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
The following patches separate the operation (write, read, discard,
etc) from the flags in bi_rw/cmd_flags. This patch adds definitions
for request/bio operations, adds fields to the request/bio to set
them, and some temporary compat code so the kernel/modules can use
either one. In the final patches this compat code will be removed
when everything is converted.
Also, in this patch the REQ_OPs match the REQ rq_flag_bits ones
for compat reasons while all the code is converted in this set. In the
last patches that will also be removed.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
block/blk-core.c | 19 ++++++++++++++++---
include/linux/blk_types.h | 15 ++++++++++++++-
include/linux/blkdev.h | 1 +
include/linux/fs.h | 37 +++++++++++++++++++++++++++++++++++--
4 files changed, 66 insertions(+), 6 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 9b887e3..954a450 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1697,7 +1697,8 @@ void init_request_from_bio(struct request *req, struct bio *bio)
{
req->cmd_type = REQ_TYPE_FS;
- req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
+ /* tmp compat. Allow users to set bi_op or bi_rw */
+ req->cmd_flags |= (bio->bi_rw | bio->bi_op) & REQ_COMMON_MASK;
if (bio->bi_rw & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@@ -2032,6 +2033,12 @@ blk_qc_t generic_make_request(struct bio *bio)
struct bio_list bio_list_on_stack;
blk_qc_t ret = BLK_QC_T_NONE;
+ /* tmp compat. Allow users to set either one or both.
+ * This will be removed when we have converted
+ * everyone in the next patches.
+ */
+ bio->bi_rw |= bio->bi_op;
+
if (!generic_make_request_checks(bio))
goto out;
@@ -2101,6 +2108,12 @@ EXPORT_SYMBOL(generic_make_request);
*/
blk_qc_t submit_bio(struct bio *bio)
{
+ /* tmp compat. Allow users to set either one or both.
+ * This will be removed when we have converted
+ * everyone in the next patches.
+ */
+ bio->bi_rw |= bio->bi_op;
+
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
@@ -2972,8 +2985,8 @@ EXPORT_SYMBOL_GPL(__blk_end_request_err);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
- /* Bit 0 (R/W) is identical in rq->cmd_flags and bio->bi_rw */
- rq->cmd_flags |= bio->bi_rw & REQ_WRITE;
+ /* tmp compat. Allow users to set bi_op or bi_rw */
+ rq->cmd_flags |= bio_data_dir(bio);
if (bio_has_data(bio))
rq->nr_phys_segments = bio_phys_segments(q, bio);
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 86a38ea..6e49c91 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -48,9 +48,15 @@ struct bio {
struct block_device *bi_bdev;
unsigned int bi_flags; /* status, command, etc */
int bi_error;
- unsigned long bi_rw; /* bottom bits READ/WRITE,
+ unsigned long bi_rw; /* bottom bits rq_flags_bits
* top bits priority
*/
+ /*
+ * this will be a u8 in the next patches and bi_rw can be shrunk to
+ * a u32. For compat in these transistional patches op is a int here.
+ */
+ int bi_op; /* REQ_OP */
+
struct bvec_iter bi_iter;
@@ -242,6 +248,13 @@ enum rq_flag_bits {
#define REQ_HASHED (1ULL << __REQ_HASHED)
#define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT)
+enum req_op {
+ REQ_OP_READ,
+ REQ_OP_WRITE = REQ_WRITE,
+ REQ_OP_DISCARD = REQ_DISCARD,
+ REQ_OP_WRITE_SAME = REQ_WRITE_SAME,
+};
+
typedef unsigned int blk_qc_t;
#define BLK_QC_T_NONE -1U
#define BLK_QC_T_SHIFT 16
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 29189ae..35b9eb3 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -96,6 +96,7 @@ struct request {
struct request_queue *q;
struct blk_mq_ctx *mq_ctx;
+ int op;
u64 cmd_flags;
unsigned cmd_type;
unsigned long atomic_flags;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3b4e751..fb9e516 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2405,15 +2405,48 @@ extern void make_bad_inode(struct inode *);
extern bool is_bad_inode(struct inode *);
#ifdef CONFIG_BLOCK
+
+static inline bool op_is_write(int op)
+{
+ switch (op) {
+ case REQ_OP_WRITE:
+ case REQ_OP_WRITE_SAME:
+ case REQ_OP_DISCARD:
+ return true;
+ default:
+ return false;
+ }
+}
+
/*
* return READ, READA, or WRITE
*/
-#define bio_rw(bio) ((bio)->bi_rw & (RW_MASK | RWA_MASK))
+static inline int bio_rw(struct bio *bio)
+{
+ /*
+ * tmp cpmpat. Allow users to set either op or rw, until
+ * all code is converted in the next patches.
+ */
+ if (op_is_write(bio->bi_op))
+ return WRITE;
+
+ return bio->bi_rw & (RW_MASK | RWA_MASK);
+}
/*
* return data direction, READ or WRITE
*/
-#define bio_data_dir(bio) ((bio)->bi_rw & 1)
+static inline int bio_data_dir(struct bio *bio)
+{
+ /*
+ * tmp cpmpat. Allow users to set either op or rw, until
+ * all code is converted in the next patches.
+ */
+ if (op_is_write(bio->bi_op))
+ return WRITE;
+
+ return bio->bi_rw & 1;
+}
extern void check_disk_size_change(struct gendisk *disk,
struct block_device *bdev);
--
1.8.3.1
--
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| From | "Martin K. Petersen" <martin.petersen@oracle.com> |
|---|---|
| Date | 2016-01-07 00:20 +0100 |
| Subject | Re: [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qO5x0-7Pn-7@gated-at.bofh.it> |
| In reply to | #1302180 |
>>>>> "Mike" == mchristi <mchristi@redhat.com> writes:
+enum req_op {
+ REQ_OP_READ,
+ REQ_OP_WRITE = REQ_WRITE,
+ REQ_OP_DISCARD = REQ_DISCARD,
+ REQ_OP_WRITE_SAME = REQ_WRITE_SAME,
+};
+
I have been irked by the REQ_ prefix in bios since the flags were
consolidated a while back. When I attempted to fix the READ/WRITE mess I
used a BLK_ prefix as a result.
Anyway. Just bikeshedding...
--
Martin K. Petersen Oracle Linux Engineering
--
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| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Date | 2016-01-09 14:40 +0100 |
| Subject | Re: [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qP1Un-6bb-19@gated-at.bofh.it> |
| In reply to | #1302180 |
Seems like this is missing REQ_OP_FLUSH, which still hides as a write?
[toc] | [prev] | [next] | [standalone]
| From | Mike Christie <michaelc@cs.wisc.edu> |
|---|---|
| Date | 2016-01-10 02:00 +0100 |
| Subject | Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qPcwq-534-3@gated-at.bofh.it> |
| In reply to | #1305232 |
On 01/09/2016 07:37 AM, Christoph Hellwig wrote:
> Seems like this is missing REQ_OP_FLUSH, which still hides as a write?
>
I might have misunderstood what you wanted or am misunderstanding you now.
I did not change the flush related code until the last patches. I added
REQ_OP_FLUSH in patch:
[PATCH 33/35] block, drivers: add REQ_OP_FLUSH operation
commit 18dea20363ba245a47bc1bb54f6465b8a05b19af
Author: Mike Christie <mchristi@redhat.com>
Date: Tue Jan 5 21:02:17 2016 -0600
block, drivers: add REQ_OP_FLUSH operation
and I added the REQ_PREFLUSH flag in
[PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH
commit 303dc6a7cc3673065538ba041562fcd833a619af
Author: Mike Christie <mchristi@redhat.com>
Date: Thu Jan 7 18:17:03 2016 -0600
block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH
I did them in separate patches, because I was not sure if they were
correct with what you requested before, and because they were a little
more tricky because of how request_fn drivers, make_request_fn drivers,
and dm-multipath handle flushes differently.
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| From | Mike Christie <michaelc@cs.wisc.edu> |
|---|---|
| Date | 2016-01-10 02:30 +0100 |
| Subject | Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qPcZs-5tr-13@gated-at.bofh.it> |
| In reply to | #1305400 |
On 01/09/2016 06:56 PM, Mike Christie wrote: > On 01/09/2016 07:37 AM, Christoph Hellwig wrote: >> Seems like this is missing REQ_OP_FLUSH, which still hides as a write? >> Oh yeah, to answer the second part of your question, REQ_OP_FLUSH is only a flush operation like what request_fn drivers wanted. REQ_PREFLUSH can be set with a REQ_OP_WRITE bio when filesystems want to do both. There is then the case where filesystems and blkdev_issue_flush could just want to request a flush. I left them as a REQ_PREFLUSH with REQ_OP_WRITE set, so there would be a single code path. > > I might have misunderstood what you wanted or am misunderstanding you now. > > I did not change the flush related code until the last patches. I added > REQ_OP_FLUSH in patch: > > [PATCH 33/35] block, drivers: add REQ_OP_FLUSH operation > commit 18dea20363ba245a47bc1bb54f6465b8a05b19af > Author: Mike Christie <mchristi@redhat.com> > Date: Tue Jan 5 21:02:17 2016 -0600 > > block, drivers: add REQ_OP_FLUSH operation > > > and I added the REQ_PREFLUSH flag in > > > [PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH > commit 303dc6a7cc3673065538ba041562fcd833a619af > Author: Mike Christie <mchristi@redhat.com> > Date: Thu Jan 7 18:17:03 2016 -0600 > > block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH > > > I did them in separate patches, because I was not sure if they were > correct with what you requested before, and because they were a little > more tricky because of how request_fn drivers, make_request_fn drivers, > and dm-multipath handle flushes differently. > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
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| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Date | 2016-01-10 08:20 +0100 |
| Subject | Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qPis9-116-7@gated-at.bofh.it> |
| In reply to | #1305405 |
On Sat, Jan 09, 2016 at 07:21:12PM -0600, Mike Christie wrote: > Oh yeah, to answer the second part of your question, REQ_OP_FLUSH is > only a flush operation like what request_fn drivers wanted. And that's the odd part that trips me up. > > REQ_PREFLUSH can be set with a REQ_OP_WRITE bio when filesystems want to > do both. > > There is then the case where filesystems and blkdev_issue_flush could > just want to request a flush. I left them as a REQ_PREFLUSH with > REQ_OP_WRITE set, so there would be a single code path. But the pure flush without data transfer case is pretty different, so it seems rather odd to handle it like that. But I suspec we could just fix that up later.
[toc] | [prev] | [next] | [standalone]
| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Date | 2016-01-10 08:20 +0100 |
| Subject | Re: [dm-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields |
| Message-ID | <qPis9-116-5@gated-at.bofh.it> |
| In reply to | #1305400 |
On Sat, Jan 09, 2016 at 06:56:14PM -0600, Mike Christie wrote: > I did not change the flush related code until the last patches. I added > REQ_OP_FLUSH in patch: Oh, I missed that.
[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 22/35] drbd: set bi_op to REQ_OP |
| Message-ID | <qNH1D-8oZ-7@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has drbd set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
Lars and Philip, I might have split this patch up a little weird.
Thisi patch handles setting up the bio, and then patch 30
(0030-block-fs-drivers-do-not-test-bi_rw-for-REQ_OPs.patch) handles
where were check/read bio->bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/block/drbd/drbd_actlog.c | 29 ++++++++++++++++-------------
drivers/block/drbd/drbd_bitmap.c | 6 +++---
drivers/block/drbd/drbd_int.h | 4 ++--
drivers/block/drbd/drbd_main.c | 5 +++--
drivers/block/drbd/drbd_receiver.c | 37 +++++++++++++++++++++++++------------
drivers/block/drbd/drbd_worker.c | 3 ++-
6 files changed, 51 insertions(+), 33 deletions(-)
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 6069e15..2fa8534 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -137,19 +137,19 @@ void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_b
static int _drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
struct bio *bio;
/* we do all our meta data IO in aligned 4k blocks. */
const int size = 4096;
- int err;
+ int err, op_flags = 0;
device->md_io.done = 0;
device->md_io.error = -ENODEV;
- if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags))
- rw |= REQ_FUA | REQ_FLUSH;
- rw |= REQ_SYNC | REQ_NOIDLE;
+ if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA, &device->flags))
+ op_flags |= REQ_FUA | REQ_FLUSH;
+ op_flags |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
bio->bi_bdev = bdev->md_bdev;
@@ -159,9 +159,10 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
goto out;
bio->bi_private = device;
bio->bi_end_io = drbd_md_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
- if (!(rw & WRITE) && device->state.disk == D_DISKLESS && device->ldev == NULL)
+ if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS && device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */
;
else if (!get_ldev_if_state(device, D_ATTACHING)) {
@@ -174,7 +175,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
bio_get(bio); /* one bio_put() is in the completion handler */
atomic_inc(&device->md_io.in_use); /* drbd_md_put_buffer() is in the completion handler */
device->md_io.submit_jif = jiffies;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
bio_io_error(bio);
else
submit_bio(bio);
@@ -188,7 +189,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
}
int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
int err;
D_ASSERT(device, atomic_read(&device->md_io.in_use) == 1);
@@ -197,19 +198,21 @@ int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bd
dynamic_drbd_dbg(device, "meta_data io: %s [%d]:%s(,%llus,%s) %pS\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ",
+ (unsigned long long)sector, (op == REQ_OP_WRITE) ? "WRITE" : "READ",
(void*)_RET_IP_ );
if (sector < drbd_md_first_sector(bdev) ||
sector + 7 > drbd_md_last_sector(bdev))
drbd_alert(device, "%s [%d]:%s(,%llus,%s) out of range md access!\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ");
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ");
- err = _drbd_md_sync_page_io(device, bdev, sector, rw);
+ err = _drbd_md_sync_page_io(device, bdev, sector, op);
if (err) {
drbd_err(device, "drbd_md_sync_page_io(,%llus,%s) failed with error %d\n",
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ", err);
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ", err);
}
return err;
}
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index ef44adb..126bf4a 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -980,7 +980,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
struct drbd_bitmap *b = device->bitmap;
struct page *page;
unsigned int len;
- unsigned int rw = (ctx->flags & BM_AIO_READ) ? READ : WRITE;
+ unsigned int op = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ : REQ_OP_WRITE;
sector_t on_disk_sector =
device->ldev->md.md_offset + device->ldev->md.bm_offset;
@@ -1011,9 +1011,9 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
bio_add_page(bio, page, len, 0);
bio->bi_private = ctx;
bio->bi_end_io = drbd_bm_endio;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
bio_io_error(bio);
} else {
submit_bio(bio);
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 34bc84e..5204079 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1507,7 +1507,7 @@ extern int drbd_resync_finished(struct drbd_device *device);
extern void *drbd_md_get_buffer(struct drbd_device *device, const char *intent);
extern void drbd_md_put_buffer(struct drbd_device *device);
extern int drbd_md_sync_page_io(struct drbd_device *device,
- struct drbd_backing_dev *bdev, sector_t sector, int rw);
+ struct drbd_backing_dev *bdev, sector_t sector, int op);
extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int);
extern void wait_until_done_or_force_detached(struct drbd_device *device,
struct drbd_backing_dev *bdev, unsigned int *done);
@@ -1557,7 +1557,7 @@ extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector
bool throttle_if_app_is_waiting);
extern int drbd_submit_peer_request(struct drbd_device *,
struct drbd_peer_request *, const unsigned,
- const int);
+ const unsigned, const int);
extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *);
extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_peer_device *, u64,
sector_t, unsigned int,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 5b43dfb..f6626e5 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3061,7 +3061,7 @@ void drbd_md_write(struct drbd_device *device, void *b)
D_ASSERT(device, drbd_md_ss(device->ldev) == device->ldev->md.md_offset);
sector = device->ldev->md.md_offset;
- if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) {
+ if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) {
/* this was a try anyways ... */
drbd_err(device, "meta data update failed!\n");
drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
@@ -3263,7 +3263,8 @@ int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev)
* Affects the paranoia out-of-range access check in drbd_md_sync_page_io(). */
bdev->md.md_size_sect = 8;
- if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, READ)) {
+ if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset,
+ REQ_OP_READ)) {
/* NOTE: can't do normal error processing here as this is
called BEFORE disk is attached */
drbd_err(device, "Error while reading metadata.\n");
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 1957fe8..880de0d 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1398,7 +1398,8 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin
/* TODO allocate from our own bio_set. */
int drbd_submit_peer_request(struct drbd_device *device,
struct drbd_peer_request *peer_req,
- const unsigned rw, const int fault_type)
+ const unsigned op, const unsigned op_flags,
+ const int fault_type)
{
struct bio *bios = NULL;
struct bio *bio;
@@ -1450,7 +1451,8 @@ next_bio:
/* > peer_req->i.sector, unless this is the first bio */
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = device->ldev->backing_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
bio->bi_private = peer_req;
bio->bi_end_io = drbd_peer_request_endio;
@@ -1458,7 +1460,7 @@ next_bio:
bios = bio;
++n_bios;
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
bio->bi_iter.bi_size = data_size;
goto submit;
}
@@ -1830,7 +1832,8 @@ static int recv_resync_read(struct drbd_peer_device *peer_device, sector_t secto
spin_unlock_irq(&device->resource->req_lock);
atomic_add(pi->size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, WRITE, DRBD_FAULT_RS_WR) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_WRITE, 0,
+ DRBD_FAULT_RS_WR) == 0)
return 0;
/* don't care for the reason here */
@@ -2152,12 +2155,19 @@ static int wait_for_and_update_peer_seq(struct drbd_peer_device *peer_device, co
/* see also bio_flags_to_wire()
* DRBD_REQ_*, because we need to semantically map the flags to data packet
* flags and back. We may replicate to other kernel versions. */
-static unsigned long wire_flags_to_bio(u32 dpf)
+static unsigned long wire_flags_to_bio_flags(u32 dpf)
{
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
- (dpf & DP_FLUSH ? REQ_FLUSH : 0) |
- (dpf & DP_DISCARD ? REQ_DISCARD : 0);
+ (dpf & DP_FLUSH ? REQ_FLUSH : 0);
+}
+
+static unsigned long wire_flags_to_bio_op(u32 dpf)
+{
+ if (dpf & DP_DISCARD)
+ return REQ_OP_DISCARD;
+ else
+ return REQ_OP_WRITE;
}
static void fail_postponed_requests(struct drbd_device *device, sector_t sector,
@@ -2303,7 +2313,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
struct drbd_peer_request *peer_req;
struct p_data *p = pi->data;
u32 peer_seq = be32_to_cpu(p->seq_num);
- int rw = WRITE;
+ int op, op_flags;
u32 dp_flags;
int err, tp;
@@ -2342,14 +2352,15 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
peer_req->flags |= EE_APPLICATION;
dp_flags = be32_to_cpu(p->dp_flags);
- rw |= wire_flags_to_bio(dp_flags);
+ op = wire_flags_to_bio_op(dp_flags);
+ op_flags = wire_flags_to_bio_flags(dp_flags);
if (pi->cmd == P_TRIM) {
struct request_queue *q = bdev_get_queue(device->ldev->backing_bdev);
peer_req->flags |= EE_IS_TRIM;
if (!blk_queue_discard(q))
peer_req->flags |= EE_IS_TRIM_USE_ZEROOUT;
D_ASSERT(peer_device, peer_req->i.size > 0);
- D_ASSERT(peer_device, rw & REQ_DISCARD);
+ D_ASSERT(peer_device, op == REQ_OP_DISCARD);
D_ASSERT(peer_device, peer_req->pages == NULL);
} else if (peer_req->pages == NULL) {
D_ASSERT(device, peer_req->i.size == 0);
@@ -2433,7 +2444,8 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
peer_req->flags |= EE_CALL_AL_COMPLETE_IO;
}
- err = drbd_submit_peer_request(device, peer_req, rw, DRBD_FAULT_DT_WR);
+ err = drbd_submit_peer_request(device, peer_req, op, op_flags,
+ DRBD_FAULT_DT_WR);
if (!err)
return 0;
@@ -2723,7 +2735,8 @@ submit_for_resync:
submit:
update_receiver_timing_details(connection, drbd_submit_peer_request);
inc_unacked(device);
- if (drbd_submit_peer_request(device, peer_req, READ, fault_type) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ fault_type) == 0)
return 0;
/* don't care for the reason here */
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index eff716c..f92f533 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -392,7 +392,8 @@ static int read_for_csum(struct drbd_peer_device *peer_device, sector_t sector,
spin_unlock_irq(&device->resource->req_lock);
atomic_add(size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, READ, DRBD_FAULT_RS_RD) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ DRBD_FAULT_RS_RD) == 0)
return 0;
/* If it failed because of ENOMEM, retry should help. If it failed
--
1.8.3.1
--
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[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 13/35] xfs: set bi_op to REQ_OP |
| Message-ID | <qNH1D-8oZ-11@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has xfs set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
Note:
I have run xfs tests on these btrfs patches. There were some failures
with and without the patches. I have not had time to track down why
xfstest fails without the patches.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/xfs/xfs_aops.c | 3 ++-
fs/xfs/xfs_buf.c | 27 +++++++++++++++------------
2 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index a1052d2..3a00935 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -382,7 +382,8 @@ xfs_submit_ioend_bio(
atomic_inc(&ioend->io_remaining);
bio->bi_private = ioend;
bio->bi_end_io = xfs_end_bio;
- bio->bi_rw |= (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw |= WB_SYNC_ALL ? WRITE_SYNC : 0;
submit_bio(bio);
}
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 644e676..4cfba72 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1124,7 +1124,8 @@ xfs_buf_ioapply_map(
int map,
int *buf_offset,
int *count,
- int rw)
+ int op,
+ int op_flags)
{
int page_index;
int total_nr_pages = bp->b_page_count;
@@ -1163,7 +1164,8 @@ next_chunk:
bio->bi_iter.bi_sector = sector;
bio->bi_end_io = xfs_buf_bio_end_io;
bio->bi_private = bp;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
for (; size && nr_pages; nr_pages--, page_index++) {
int rbytes, nbytes = PAGE_SIZE - offset;
@@ -1207,7 +1209,8 @@ _xfs_buf_ioapply(
struct xfs_buf *bp)
{
struct blk_plug plug;
- int rw;
+ int op;
+ int op_flags = 0;
int offset;
int size;
int i;
@@ -1226,14 +1229,13 @@ _xfs_buf_ioapply(
bp->b_ioend_wq = bp->b_target->bt_mount->m_buf_workqueue;
if (bp->b_flags & XBF_WRITE) {
+ op = REQ_OP_WRITE;
if (bp->b_flags & XBF_SYNCIO)
- rw = WRITE_SYNC;
- else
- rw = WRITE;
+ op_flags = WRITE_SYNC;
if (bp->b_flags & XBF_FUA)
- rw |= REQ_FUA;
+ op_flags |= REQ_FUA;
if (bp->b_flags & XBF_FLUSH)
- rw |= REQ_FLUSH;
+ op_flags |= REQ_FLUSH;
/*
* Run the write verifier callback function if it exists. If
@@ -1263,13 +1265,14 @@ _xfs_buf_ioapply(
}
}
} else if (bp->b_flags & XBF_READ_AHEAD) {
- rw = READA;
+ op = REQ_OP_READ;
+ op_flags = REQ_RAHEAD;
} else {
- rw = READ;
+ op = REQ_OP_READ;
}
/* we only use the buffer cache for meta-data */
- rw |= REQ_META;
+ op_flags |= REQ_META;
/*
* Walk all the vectors issuing IO on them. Set up the initial offset
@@ -1281,7 +1284,7 @@ _xfs_buf_ioapply(
size = BBTOB(bp->b_io_length);
blk_start_plug(&plug);
for (i = 0; i < bp->b_map_count; i++) {
- xfs_buf_ioapply_map(bp, i, &offset, &size, rw);
+ xfs_buf_ioapply_map(bp, i, &offset, &size, op, op_flags);
if (bp->b_error)
break;
if (size <= 0)
--
1.8.3.1
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| From | Dave Chinner <david@fromorbit.com> |
|---|---|
| Date | 2016-01-07 04:20 +0100 |
| Subject | Re: [PATCH 13/35] xfs: set bi_op to REQ_OP |
| Message-ID | <qO9hg-28m-9@gated-at.bofh.it> |
| In reply to | #1302182 |
On Tue, Jan 05, 2016 at 02:53:16PM -0600, mchristi@redhat.com wrote: > From: Mike Christie <mchristi@redhat.com> > > This patch has xfs set the bio bi_op to a REQ_OP, and > rq_flag_bits to bi_rw. > > Note: > I have run xfs tests on these btrfs patches. There were some failures > with and without the patches. I have not had time to track down why > xfstest fails without the patches. > > Signed-off-by: Mike Christie <mchristi@redhat.com> > --- > fs/xfs/xfs_aops.c | 3 ++- > fs/xfs/xfs_buf.c | 27 +++++++++++++++------------ > 2 files changed, 17 insertions(+), 13 deletions(-) Not sure which patches your note is refering to here. The XFS change here looks fine. Acked-by: Dave Chinner <dchinner@redhat.com> -Dave. -- Dave Chinner david@fromorbit.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 14/35] hfsplus: set bi_op to REQ_OP |
| Message-ID | <qNH1D-8oZ-13@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has hfsplus set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/hfsplus/hfsplus_fs.h | 2 +-
fs/hfsplus/part_tbl.c | 5 +++--
fs/hfsplus/super.c | 6 ++++--
fs/hfsplus/wrapper.c | 15 +++++++++------
4 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index f91a1fa..80154aa 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -525,7 +525,7 @@ int hfsplus_compare_dentry(const struct dentry *parent,
/* wrapper.c */
int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf,
- void **data, int rw);
+ void **data, int op, int op_flags);
int hfsplus_read_wrapper(struct super_block *sb);
/* time macros */
diff --git a/fs/hfsplus/part_tbl.c b/fs/hfsplus/part_tbl.c
index eb355d8..63164eb 100644
--- a/fs/hfsplus/part_tbl.c
+++ b/fs/hfsplus/part_tbl.c
@@ -112,7 +112,8 @@ static int hfs_parse_new_pmap(struct super_block *sb, void *buf,
if ((u8 *)pm - (u8 *)buf >= buf_size) {
res = hfsplus_submit_bio(sb,
*part_start + HFS_PMAP_BLK + i,
- buf, (void **)&pm, READ);
+ buf, (void **)&pm, REQ_OP_READ,
+ 0);
if (res)
return res;
}
@@ -136,7 +137,7 @@ int hfs_part_find(struct super_block *sb,
return -ENOMEM;
res = hfsplus_submit_bio(sb, *part_start + HFS_PMAP_BLK,
- buf, &data, READ);
+ buf, &data, REQ_OP_READ, 0);
if (res)
goto out;
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 5d54490..01cf313 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -219,7 +219,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
- sbi->s_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error = error2;
if (!write_backup)
@@ -227,7 +228,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + sbi->sect_count - 2,
- sbi->s_backup_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_backup_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error2 = error;
out:
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 7e605b5..d09b726 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -30,7 +30,8 @@ struct hfsplus_wd {
* @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes
* @buf: buffer for I/O
* @data: output pointer for location of requested data
- * @rw: direction of I/O
+ * @op: direction of I/O
+ * @op_flags: request op flags
*
* The unit of I/O is hfsplus_min_io_size(sb), which may be bigger than
* HFSPLUS_SECTOR_SIZE, and @buf must be sized accordingly. On reads
@@ -44,7 +45,7 @@ struct hfsplus_wd {
* will work correctly.
*/
int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
- void *buf, void **data, int rw)
+ void *buf, void **data, int op, int op_flags)
{
struct bio *bio;
int ret = 0;
@@ -65,9 +66,10 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = sb->s_bdev;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
- if (!(rw & WRITE) && data)
+ if (op != WRITE && data)
*data = (u8 *)buf + offset;
while (io_size > 0) {
@@ -182,7 +184,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
reread:
error = hfsplus_submit_bio(sb, part_start + HFSPLUS_VOLHEAD_SECTOR,
sbi->s_vhdr_buf, (void **)&sbi->s_vhdr,
- READ);
+ REQ_OP_READ, 0);
if (error)
goto out_free_backup_vhdr;
@@ -214,7 +216,8 @@ reread:
error = hfsplus_submit_bio(sb, part_start + part_size - 2,
sbi->s_backup_vhdr_buf,
- (void **)&sbi->s_backup_vhdr, READ);
+ (void **)&sbi->s_backup_vhdr, REQ_OP_READ,
+ 0);
if (error)
goto out_free_backup_vhdr;
--
1.8.3.1
--
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 15/35] mpage: set bi_op to REQ_OP |
| Message-ID | <qNH1E-8oZ-15@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has the mpage.c code set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
I have run xfstest with xfs, but I am not sure
if I have stressed these code paths well.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/mpage.c | 41 +++++++++++++++++++++--------------------
1 file changed, 21 insertions(+), 20 deletions(-)
diff --git a/fs/mpage.c b/fs/mpage.c
index 9fec67f..3f7d221 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -55,11 +55,12 @@ static void mpage_end_io(struct bio *bio)
bio_put(bio);
}
-static struct bio *mpage_bio_submit(int rw, struct bio *bio)
+static struct bio *mpage_bio_submit(int op, int op_flags, struct bio *bio)
{
bio->bi_end_io = mpage_end_io;
- bio->bi_rw |= rw;
- guard_bio_eod(rw, bio);
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
+ guard_bio_eod(op, bio);
submit_bio(bio);
return NULL;
}
@@ -269,7 +270,7 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages,
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && (*last_block_in_bio != blocks[0] - 1))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
alloc_new:
if (bio == NULL) {
@@ -286,7 +287,7 @@ alloc_new:
length = first_hole << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
goto alloc_new;
}
@@ -294,7 +295,7 @@ alloc_new:
nblocks = map_bh->b_size >> blkbits;
if ((buffer_boundary(map_bh) && relative_block == nblocks) ||
(first_hole != blocks_per_page))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
else
*last_block_in_bio = blocks[blocks_per_page - 1];
out:
@@ -302,7 +303,7 @@ out:
confused:
if (bio)
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
if (!PageUptodate(page))
block_read_full_page(page, get_block);
else
@@ -384,7 +385,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages,
}
BUG_ON(!list_empty(pages));
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(REQ_OP_READ, 0, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpages);
@@ -405,7 +406,7 @@ int mpage_readpage(struct page *page, get_block_t get_block)
bio = do_mpage_readpage(bio, page, 1, &last_block_in_bio,
&map_bh, &first_logical_block, get_block, gfp);
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(REQ_OP_READ, 0, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpage);
@@ -486,7 +487,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
struct buffer_head map_bh;
loff_t i_size = i_size_read(inode);
int ret = 0;
- int wr = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0);
if (page_has_buffers(page)) {
struct buffer_head *head = page_buffers(page);
@@ -595,7 +596,7 @@ page_is_mapped:
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && mpd->last_block_in_bio != blocks[0] - 1)
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
alloc_new:
if (bio == NULL) {
@@ -622,7 +623,7 @@ alloc_new:
wbc_account_io(wbc, page, PAGE_SIZE);
length = first_unmapped << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
goto alloc_new;
}
@@ -632,7 +633,7 @@ alloc_new:
set_page_writeback(page);
unlock_page(page);
if (boundary || (first_unmapped != blocks_per_page)) {
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
if (boundary_block) {
write_boundary_block(boundary_bdev,
boundary_block, 1 << blkbits);
@@ -644,7 +645,7 @@ alloc_new:
confused:
if (bio)
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
if (mpd->use_writepage) {
ret = mapping->a_ops->writepage(page, wbc);
@@ -701,9 +702,9 @@ mpage_writepages(struct address_space *mapping,
ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd);
if (mpd.bio) {
- int wr = (wbc->sync_mode == WB_SYNC_ALL ?
- WRITE_SYNC : WRITE);
- mpage_bio_submit(wr, mpd.bio);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : 0);
+ mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
}
}
blk_finish_plug(&plug);
@@ -722,9 +723,9 @@ int mpage_writepage(struct page *page, get_block_t get_block,
};
int ret = __mpage_writepage(page, wbc, &mpd);
if (mpd.bio) {
- int wr = (wbc->sync_mode == WB_SYNC_ALL ?
- WRITE_SYNC : WRITE);
- mpage_bio_submit(wr, mpd.bio);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : 0);
+ mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
}
return ret;
}
--
1.8.3.1
--
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 28/35] blktrace: get op from req->op/bio->bi_op |
| Message-ID | <qNH1E-8oZ-23@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
The bio and request struct now store the operation in
bio->bi_op/request->op. This patch has blktrace not
check bi_rw/cmd_flags.
This patch is only compile tested.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
include/linux/blktrace_api.h | 2 +-
include/trace/events/bcache.h | 12 ++++++----
include/trace/events/block.h | 31 +++++++++++++++++---------
kernel/trace/blktrace.c | 52 +++++++++++++++++++++++--------------------
4 files changed, 57 insertions(+), 40 deletions(-)
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index afc1343..ee25ba4 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -109,7 +109,7 @@ static inline int blk_cmd_buf_len(struct request *rq)
}
extern void blk_dump_cmd(char *buf, struct request *rq);
-extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
+extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h
index 981acf7..8abe564 100644
--- a/include/trace/events/bcache.h
+++ b/include/trace/events/bcache.h
@@ -27,7 +27,8 @@ DECLARE_EVENT_CLASS(bcache_request,
__entry->sector = bio->bi_iter.bi_sector;
__entry->orig_sector = bio->bi_iter.bi_sector - 16;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
@@ -101,7 +102,8 @@ DECLARE_EVENT_CLASS(bcache_bio,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u",
@@ -136,7 +138,8 @@ TRACE_EVENT(bcache_read,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->cache_hit = hit;
__entry->bypass = bypass;
),
@@ -167,7 +170,8 @@ TRACE_EVENT(bcache_write,
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->writeback = writeback;
__entry->bypass = bypass;
),
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index e8a5eca..4416dcd 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -84,7 +84,8 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
0 : blk_rq_sectors(rq);
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -162,7 +163,7 @@ TRACE_EVENT(block_rq_complete,
__entry->nr_sector = nr_bytes >> 9;
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags, nr_bytes);
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -198,7 +199,8 @@ DECLARE_EVENT_CLASS(block_rq,
__entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_bytes(rq) : 0;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -272,7 +274,8 @@ TRACE_EVENT(block_bio_bounce,
bio->bi_bdev->bd_dev : 0;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -310,7 +313,8 @@ TRACE_EVENT(block_bio_complete,
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
__entry->error = error;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u [%d]",
@@ -337,7 +341,8 @@ DECLARE_EVENT_CLASS(block_bio_merge,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -404,7 +409,8 @@ TRACE_EVENT(block_bio_queue,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -432,7 +438,7 @@ DECLARE_EVENT_CLASS(block_get_rq,
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
__entry->sector = bio ? bio->bi_iter.bi_sector : 0;
__entry->nr_sector = bio ? bio_sectors(bio) : 0;
- blk_fill_rwbs(__entry->rwbs,
+ blk_fill_rwbs(__entry->rwbs, bio ? bio->bi_op : 0,
bio ? bio->bi_rw : 0, __entry->nr_sector);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -567,7 +573,8 @@ TRACE_EVENT(block_split,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->new_sector = new_sector;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -610,7 +617,8 @@ TRACE_EVENT(block_bio_remap,
__entry->nr_sector = bio_sectors(bio);
__entry->old_dev = dev;
__entry->old_sector = from;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
@@ -656,7 +664,8 @@ TRACE_EVENT(block_rq_remap,
__entry->old_dev = dev;
__entry->old_sector = from;
__entry->nr_bios = blk_rq_count_bios(rq);
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 2aeb6ff..4a9ac83 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -199,7 +199,8 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
* blk_io_trace structure and places it in a per-cpu subbuffer.
*/
static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
- int rw, u32 what, int error, int pdu_len, void *pdu_data)
+ int op, int op_flags, u32 what, int error, int pdu_len,
+ void *pdu_data)
{
struct task_struct *tsk = current;
struct ring_buffer_event *event = NULL;
@@ -214,13 +215,14 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer))
return;
- what |= ddir_act[rw & WRITE];
- what |= MASK_TC_BIT(rw, SYNC);
- what |= MASK_TC_BIT(rw, RAHEAD);
- what |= MASK_TC_BIT(rw, META);
- what |= MASK_TC_BIT(rw, DISCARD);
- what |= MASK_TC_BIT(rw, FLUSH);
- what |= MASK_TC_BIT(rw, FUA);
+ what |= ddir_act[op_is_write(op) ? WRITE : READ];
+ what |= MASK_TC_BIT(op_flags, SYNC);
+ what |= MASK_TC_BIT(op_flags, RAHEAD);
+ what |= MASK_TC_BIT(op_flags, META);
+ what |= MASK_TC_BIT(op_flags, FLUSH);
+ what |= MASK_TC_BIT(op_flags, FUA);
+ if (op == REQ_OP_DISCARD)
+ what |= BLK_TC_ACT(BLK_TC_DISCARD);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -708,11 +710,11 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
what |= BLK_TC_ACT(BLK_TC_PC);
- __blk_add_trace(bt, 0, nr_bytes, rq->cmd_flags,
+ __blk_add_trace(bt, 0, nr_bytes, rq->op, rq->cmd_flags,
what, rq->errors, rq->cmd_len, rq->cmd);
} else {
what |= BLK_TC_ACT(BLK_TC_FS);
- __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes,
+ __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, rq->op,
rq->cmd_flags, what, rq->errors, 0, NULL);
}
}
@@ -770,7 +772,7 @@ static void blk_add_trace_bio(struct request_queue *q, struct bio *bio,
return;
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, what, error, 0, NULL);
+ bio->bi_op, bio->bi_rw, what, error, 0, NULL);
}
static void blk_add_trace_bio_bounce(void *ignore,
@@ -818,7 +820,8 @@ static void blk_add_trace_getrq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_GETRQ, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_GETRQ, 0, 0,
+ NULL);
}
}
@@ -833,7 +836,7 @@ static void blk_add_trace_sleeprq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ,
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_SLEEPRQ,
0, 0, NULL);
}
}
@@ -843,7 +846,7 @@ static void blk_add_trace_plug(void *ignore, struct request_queue *q)
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
}
static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
@@ -860,7 +863,7 @@ static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
else
what = BLK_TA_UNPLUG_TIMER;
- __blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
+ __blk_add_trace(bt, 0, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
}
}
@@ -874,8 +877,9 @@ static void blk_add_trace_split(void *ignore,
__be64 rpdu = cpu_to_be64(pdu);
__blk_add_trace(bt, bio->bi_iter.bi_sector,
- bio->bi_iter.bi_size, bio->bi_rw, BLK_TA_SPLIT,
- bio->bi_error, sizeof(rpdu), &rpdu);
+ bio->bi_iter.bi_size, bio->bi_op, bio->bi_rw,
+ BLK_TA_SPLIT, bio->bi_error, sizeof(rpdu),
+ &rpdu);
}
}
@@ -907,7 +911,7 @@ static void blk_add_trace_bio_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
+ bio->bi_op, bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
sizeof(r), &r);
}
@@ -940,7 +944,7 @@ static void blk_add_trace_rq_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
- rq_data_dir(rq), BLK_TA_REMAP, !!rq->errors,
+ rq_data_dir(rq), 0, BLK_TA_REMAP, !!rq->errors,
sizeof(r), &r);
}
@@ -965,10 +969,10 @@ void blk_add_driver_data(struct request_queue *q,
return;
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
else
- __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
}
EXPORT_SYMBOL_GPL(blk_add_driver_data);
@@ -1767,16 +1771,16 @@ void blk_dump_cmd(char *buf, struct request *rq)
}
}
-void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
+void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
if (rw & REQ_FLUSH)
rwbs[i++] = 'F';
- if (rw & WRITE)
+ if (op == REQ_OP_WRITE)
rwbs[i++] = 'W';
- else if (rw & REQ_DISCARD)
+ else if (op == REQ_OP_DISCARD)
rwbs[i++] = 'D';
else if (bytes)
rwbs[i++] = 'R';
--
1.8.3.1
--
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| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 18/35] pm: set bi_op to REQ_OP |
| Message-ID | <qNH1E-8oZ-31@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has the pm swap code set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
kernel/power/swap.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 649dfc7..197076b 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -250,7 +250,7 @@ static void hib_end_io(struct bio *bio)
bio_put(bio);
}
-static int hib_submit_io(int rw, pgoff_t page_off, void *addr,
+static int hib_submit_io(int op, int op_flags, pgoff_t page_off, void *addr,
struct hib_bio_batch *hb)
{
struct page *page = virt_to_page(addr);
@@ -260,7 +260,8 @@ static int hib_submit_io(int rw, pgoff_t page_off, void *addr,
bio = bio_alloc(__GFP_RECLAIM | __GFP_HIGH, 1);
bio->bi_iter.bi_sector = page_off * (PAGE_SIZE >> 9);
bio->bi_bdev = hib_resume_bdev;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
printk(KERN_ERR "PM: Adding page to bio failed at %llu\n",
@@ -296,7 +297,8 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags)
{
int error;
- hib_submit_io(READ_SYNC, swsusp_resume_block, swsusp_header, NULL);
+ hib_submit_io(REQ_OP_READ, READ_SYNC, swsusp_resume_block,
+ swsusp_header, NULL);
if (!memcmp("SWAP-SPACE",swsusp_header->sig, 10) ||
!memcmp("SWAPSPACE2",swsusp_header->sig, 10)) {
memcpy(swsusp_header->orig_sig,swsusp_header->sig, 10);
@@ -305,8 +307,8 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags)
swsusp_header->flags = flags;
if (flags & SF_CRC32_MODE)
swsusp_header->crc32 = handle->crc32;
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
- swsusp_header, NULL);
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block, swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Swap header not found!\n");
error = -ENODEV;
@@ -379,7 +381,7 @@ static int write_page(void *buf, sector_t offset, struct hib_bio_batch *hb)
} else {
src = buf;
}
- return hib_submit_io(WRITE_SYNC, offset, src, hb);
+ return hib_submit_io(REQ_OP_WRITE, WRITE_SYNC, offset, src, hb);
}
static void release_swap_writer(struct swap_map_handle *handle)
@@ -982,7 +984,8 @@ static int get_swap_reader(struct swap_map_handle *handle,
return -ENOMEM;
}
- error = hib_submit_io(READ_SYNC, offset, tmp->map, NULL);
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC, offset,
+ tmp->map, NULL);
if (error) {
release_swap_reader(handle);
return error;
@@ -1006,7 +1009,7 @@ static int swap_read_page(struct swap_map_handle *handle, void *buf,
offset = handle->cur->entries[handle->k];
if (!offset)
return -EFAULT;
- error = hib_submit_io(READ_SYNC, offset, buf, hb);
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC, offset, buf, hb);
if (error)
return error;
if (++handle->k >= MAP_PAGE_ENTRIES) {
@@ -1508,7 +1511,8 @@ int swsusp_check(void)
if (!IS_ERR(hib_resume_bdev)) {
set_blocksize(hib_resume_bdev, PAGE_SIZE);
clear_page(swsusp_header);
- error = hib_submit_io(READ_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
if (error)
goto put;
@@ -1516,7 +1520,8 @@ int swsusp_check(void)
if (!memcmp(HIBERNATE_SIG, swsusp_header->sig, 10)) {
memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10);
/* Reset swap signature now */
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
} else {
error = -EINVAL;
@@ -1560,10 +1565,12 @@ int swsusp_unmark(void)
{
int error;
- hib_submit_io(READ_SYNC, swsusp_resume_block, swsusp_header, NULL);
+ hib_submit_io(REQ_OP_READ, READ_SYNC, swsusp_resume_block,
+ swsusp_header, NULL);
if (!memcmp(HIBERNATE_SIG,swsusp_header->sig, 10)) {
memcpy(swsusp_header->sig,swsusp_header->orig_sig, 10);
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Cannot find swsusp signature!\n");
--
1.8.3.1
--
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[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 12/35] gfs2: set bi_op to REQ_OP |
| Message-ID | <qNH1E-8oZ-33@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has gfs2 set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
v2:
Bob, I did not add your signed off, because there was
the gfs2_submit_bhs changes since last time you reviewed
it.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
fs/gfs2/log.c | 8 ++++----
fs/gfs2/lops.c | 12 +++++++-----
fs/gfs2/lops.h | 2 +-
fs/gfs2/meta_io.c | 8 +++++---
fs/gfs2/ops_fstype.c | 1 +
5 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 0ff028c..e58ccef0 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -657,7 +657,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
struct gfs2_log_header *lh;
unsigned int tail;
u32 hash;
- int rw = WRITE_FLUSH_FUA | REQ_META;
+ int op_flags = WRITE_FLUSH_FUA | REQ_META;
struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state);
lh = page_address(page);
@@ -682,12 +682,12 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) {
gfs2_ordered_wait(sdp);
log_flush_wait(sdp);
- rw = WRITE_SYNC | REQ_META | REQ_PRIO;
+ op_flags = WRITE_SYNC | REQ_META | REQ_PRIO;
}
sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
gfs2_log_write_page(sdp, page);
- gfs2_log_flush_bio(sdp, rw);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, op_flags);
log_flush_wait(sdp);
if (sdp->sd_log_tail != tail)
@@ -738,7 +738,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
gfs2_ordered_write(sdp);
lops_before_commit(sdp, tr);
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
if (sdp->sd_log_head != sdp->sd_log_flush_head) {
log_flush_wait(sdp);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index acc5ccb..11980f6 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -230,17 +230,19 @@ static void gfs2_end_log_write(struct bio *bio)
/**
* gfs2_log_flush_bio - Submit any pending log bio
* @sdp: The superblock
- * @rw: The rw flags
+ * @op: REQ_OP
+ * @op_flags: rq_flag_bits
*
* Submit any pending part-built or full bio to the block device. If
* there is no pending bio, then this is a no-op.
*/
-void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw)
+void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags)
{
if (sdp->sd_log_bio) {
atomic_inc(&sdp->sd_log_in_flight);
- sdp->sd_log_bio->bi_rw |= rw;
+ sdp->sd_log_bio->bi_op = op;
+ sdp->sd_log_bio->bi_rw |= op_flags;
submit_bio(sdp->sd_log_bio);
sdp->sd_log_bio = NULL;
}
@@ -300,7 +302,7 @@ static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno)
nblk >>= sdp->sd_fsb2bb_shift;
if (blkno == nblk)
return bio;
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
}
return gfs2_log_alloc_bio(sdp, blkno);
@@ -329,7 +331,7 @@ static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page,
bio = gfs2_log_get_bio(sdp, blkno);
ret = bio_add_page(bio, page, size, offset);
if (ret == 0) {
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
bio = gfs2_log_alloc_bio(sdp, blkno);
ret = bio_add_page(bio, page, size, offset);
WARN_ON(ret == 0);
diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h
index a65a7ba..e529f53 100644
--- a/fs/gfs2/lops.h
+++ b/fs/gfs2/lops.h
@@ -27,7 +27,7 @@ extern const struct gfs2_log_operations gfs2_databuf_lops;
extern const struct gfs2_log_operations *gfs2_log_ops[];
extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
-extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw);
+extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags);
extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index e2fc2b9..3996c1d 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -213,7 +213,8 @@ static void gfs2_meta_read_endio(struct bio *bio)
* Submit several consecutive buffer head I/O requests as a single bio I/O
* request. (See submit_bh_wbc.)
*/
-static void gfs2_submit_bhs(int rw, struct buffer_head *bhs[], int num)
+static void gfs2_submit_bhs(int op, int op_flags, struct buffer_head *bhs[],
+ int num)
{
struct buffer_head *bh = bhs[0];
struct bio *bio;
@@ -230,7 +231,8 @@ static void gfs2_submit_bhs(int rw, struct buffer_head *bhs[], int num)
bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
}
bio->bi_end_io = gfs2_meta_read_endio;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
submit_bio(bio);
}
@@ -281,7 +283,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
}
}
- gfs2_submit_bhs(READ_SYNC | REQ_META | REQ_PRIO, bhs, num);
+ gfs2_submit_bhs(REQ_OP_READ, READ_SYNC | REQ_META | REQ_PRIO, bhs, num);
if (!(flags & DIO_WAIT))
return 0;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 15a4f86..cc8600a 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -246,6 +246,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent)
bio->bi_end_io = end_bio_io_page;
bio->bi_private = page;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw |= READ_SYNC | REQ_META;
submit_bio(bio);
wait_on_page_locked(page);
--
1.8.3.1
--
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[toc] | [prev] | [next] | [standalone]
| From | mchristi@redhat.com |
|---|---|
| Date | 2016-01-05 22:10 +0100 |
| Subject | [PATCH 19/35] dm: set bi_op to REQ_OP |
| Message-ID | <qNH1E-8oZ-35@gated-at.bofh.it> |
| In reply to | #1302174 |
From: Mike Christie <mchristi@redhat.com>
This patch has dm set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
I did some basic dm tests, but I think this patch should
be considered compile tested only. I have not tested all the
dm targets and I did not stress every code path I have touched.
Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/dm-bufio.c | 8 +++---
drivers/md/dm-crypt.c | 1 +
drivers/md/dm-io.c | 57 ++++++++++++++++++++++-------------------
drivers/md/dm-kcopyd.c | 25 +++++++++---------
drivers/md/dm-log-writes.c | 6 ++---
drivers/md/dm-log.c | 5 ++--
drivers/md/dm-raid1.c | 11 +++++---
drivers/md/dm-snap-persistent.c | 24 +++++++++--------
drivers/md/dm-thin.c | 7 ++---
drivers/md/dm.c | 1 +
include/linux/dm-io.h | 3 ++-
11 files changed, 82 insertions(+), 66 deletions(-)
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 1fd25bf..b6055f2 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -574,7 +574,8 @@ static void use_dmio(struct dm_buffer *b, int rw, sector_t block,
{
int r;
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = rw,
+ .bi_op_flags = 0,
.notify.fn = dmio_complete,
.notify.context = b,
.client = b->c->dm_io,
@@ -634,7 +635,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block,
* the dm_buffer's inline bio is local to bufio.
*/
b->bio.bi_private = end_io;
- b->bio.bi_rw |= rw;
+ b->bio.bi_op = rw;
/*
* We assume that if len >= PAGE_SIZE ptr is page-aligned.
@@ -1327,7 +1328,8 @@ EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = c->dm_io,
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3147c8d..f466fec 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1133,6 +1133,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
+ clone->bi_op = io->base_bio->bi_op;
clone->bi_rw = io->base_bio->bi_rw;
}
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 107d445..790b185 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -278,8 +278,9 @@ static void km_dp_init(struct dpages *dp, void *data)
/*-----------------------------------------------------------------
* IO routines that accept a list of pages.
*---------------------------------------------------------------*/
-static void do_region(int rw, unsigned region, struct dm_io_region *where,
- struct dpages *dp, struct io *io)
+static void do_region(int op, int op_flags, unsigned region,
+ struct dm_io_region *where, struct dpages *dp,
+ struct io *io)
{
struct bio *bio;
struct page *page;
@@ -295,24 +296,25 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
/*
* Reject unsupported discard and write same requests.
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
special_cmd_max_sectors = q->limits.max_discard_sectors;
- else if (rw & REQ_WRITE_SAME)
+ else if (op == REQ_OP_WRITE_SAME)
special_cmd_max_sectors = q->limits.max_write_same_sectors;
- if ((rw & (REQ_DISCARD | REQ_WRITE_SAME)) && special_cmd_max_sectors == 0) {
+ if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_SAME) &&
+ special_cmd_max_sectors == 0) {
dec_count(io, region, -EOPNOTSUPP);
return;
}
/*
- * where->count may be zero if rw holds a flush and we need to
+ * where->count may be zero if op holds a flush and we need to
* send a zero-sized flush.
*/
do {
/*
* Allocate a suitably sized-bio.
*/
- if ((rw & REQ_DISCARD) || (rw & REQ_WRITE_SAME))
+ if ((op == REQ_OP_DISCARD) || (op == REQ_OP_WRITE_SAME))
num_bvecs = 1;
else
num_bvecs = min_t(int, BIO_MAX_PAGES,
@@ -322,14 +324,15 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio->bi_bdev = where->bdev;
bio->bi_end_io = endio;
- bio->bi_rw |= rw;
+ bio->bi_op = op;
+ bio->bi_rw |= op_flags;
store_io_and_region_in_bio(bio, io, region);
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining);
bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;
remaining -= num_sectors;
- } else if (rw & REQ_WRITE_SAME) {
+ } else if (op == REQ_OP_WRITE_SAME) {
/*
* WRITE SAME only uses a single page.
*/
@@ -360,7 +363,7 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
} while (remaining);
}
-static void dispatch_io(int rw, unsigned int num_regions,
+static void dispatch_io(int op, int op_flags, unsigned int num_regions,
struct dm_io_region *where, struct dpages *dp,
struct io *io, int sync)
{
@@ -370,7 +373,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
- rw |= REQ_SYNC;
+ op_flags |= REQ_SYNC;
/*
* For multiple regions we need to be careful to rewind
@@ -378,8 +381,8 @@ static void dispatch_io(int rw, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
- if (where[i].count || (rw & REQ_FLUSH))
- do_region(rw, i, where + i, dp, io);
+ if (where[i].count || (op_flags & REQ_FLUSH))
+ do_region(op, op_flags, i, where + i, dp, io);
}
/*
@@ -403,13 +406,13 @@ static void sync_io_complete(unsigned long error, void *context)
}
static int sync_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- unsigned long *error_bits)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, unsigned long *error_bits)
{
struct io *io;
struct sync_io sio;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
return -EIO;
}
@@ -426,7 +429,7 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 1);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 1);
wait_for_completion_io(&sio.wait);
@@ -437,12 +440,12 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
}
static int async_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- io_notify_fn fn, void *context)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, io_notify_fn fn, void *context)
{
struct io *io;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
fn(1, context);
return -EIO;
@@ -458,7 +461,7 @@ static int async_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 0);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 0);
return 0;
}
@@ -481,7 +484,7 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp,
case DM_IO_VMA:
flush_kernel_vmap_range(io_req->mem.ptr.vma, size);
- if ((io_req->bi_rw & RW_MASK) == READ) {
+ if (io_req->bi_op == REQ_OP_READ) {
dp->vma_invalidate_address = io_req->mem.ptr.vma;
dp->vma_invalidate_size = size;
}
@@ -519,10 +522,12 @@ int dm_io(struct dm_io_request *io_req, unsigned num_regions,
if (!io_req->notify.fn)
return sync_io(io_req->client, num_regions, where,
- io_req->bi_rw, &dp, sync_error_bits);
+ io_req->bi_op, io_req->bi_op_flags, &dp,
+ sync_error_bits);
- return async_io(io_req->client, num_regions, where, io_req->bi_rw,
- &dp, io_req->notify.fn, io_req->notify.context);
+ return async_io(io_req->client, num_regions, where, io_req->bi_op,
+ io_req->bi_op_flags, &dp, io_req->notify.fn,
+ io_req->notify.context);
}
EXPORT_SYMBOL(dm_io);
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 1452ed9..4182bc7d 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -465,10 +465,10 @@ static void complete_io(unsigned long error, void *context)
io_job_finish(kc->throttle);
if (error) {
- if (job->rw & WRITE)
- job->write_err |= error;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err |= error;
if (!test_bit(DM_KCOPYD_IGNORE_ERROR, &job->flags)) {
push(&kc->complete_jobs, job);
@@ -477,13 +477,11 @@ static void complete_io(unsigned long error, void *context)
}
}
- if (job->rw & WRITE)
- push(&kc->complete_jobs, job);
-
- else {
+ if (job->rw == READ) {
job->rw = WRITE;
push(&kc->io_jobs, job);
- }
+ } else
+ push(&kc->complete_jobs, job);
wake(kc);
}
@@ -496,7 +494,8 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
- .bi_rw = job->rw,
+ .bi_op = job->rw,
+ .bi_op_flags = 0,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = 0,
@@ -550,10 +549,10 @@ static int process_jobs(struct list_head *jobs, struct dm_kcopyd_client *kc,
if (r < 0) {
/* error this rogue job */
- if (job->rw & WRITE)
- job->write_err = (unsigned long) -1L;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err = (unsigned long) -1L;
push(&kc->complete_jobs, job);
break;
}
@@ -734,7 +733,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
/*
* Use WRITE SAME to optimize zeroing if all dests support it.
*/
- job->rw = WRITE | REQ_WRITE_SAME;
+ job->rw = REQ_OP_WRITE_SAME;
for (i = 0; i < job->num_dests; i++)
if (!bdev_write_same(job->dests[i].bdev)) {
job->rw = WRITE;
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 21760e3..f63bbf4 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -205,7 +205,7 @@ static int write_metadata(struct log_writes_c *lc, void *entry,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw |= WRITE;
+ bio->bi_op = REQ_OP_WRITE;
page = alloc_page(GFP_KERNEL);
if (!page) {
@@ -270,7 +270,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw |= WRITE;
+ bio->bi_op = REQ_OP_WRITE;
for (i = 0; i < block->vec_cnt; i++) {
/*
@@ -292,7 +292,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw |= WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = bio_add_page(bio, block->vecs[i].bv_page,
block->vecs[i].bv_len, 0);
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 627d191..4ca2d1d 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -293,7 +293,7 @@ static void header_from_disk(struct log_header_core *core, struct log_header_dis
static int rw_header(struct log_c *lc, int rw)
{
- lc->io_req.bi_rw = rw;
+ lc->io_req.bi_op = rw;
return dm_io(&lc->io_req, 1, &lc->header_location, NULL);
}
@@ -306,7 +306,8 @@ static int flush_header(struct log_c *lc)
.count = 0,
};
- lc->io_req.bi_rw = WRITE_FLUSH;
+ lc->io_req.bi_op = REQ_OP_WRITE;
+ lc->io_req.bi_op_flags = WRITE_FLUSH;
return dm_io(&lc->io_req, 1, &null_location, NULL);
}
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index f2a363a..6b61b62 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -260,7 +260,8 @@ static int mirror_flush(struct dm_target *ti)
struct dm_io_region io[ms->nr_mirrors];
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = ms->io_client,
@@ -541,7 +542,8 @@ static void read_async_bio(struct mirror *m, struct bio *bio)
{
struct dm_io_region io;
struct dm_io_request io_req = {
- .bi_rw = READ,
+ .bi_op = REQ_OP_READ,
+ .bi_op_flags = 0,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = read_callback,
@@ -654,7 +656,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
struct dm_io_region io[ms->nr_mirrors], *dest = io;
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE | (bio->bi_rw & WRITE_FLUSH_FUA),
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = bio->bi_rw & WRITE_FLUSH_FUA,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = write_callback,
@@ -663,7 +666,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
};
if (bio->bi_rw & REQ_DISCARD) {
- io_req.bi_rw |= REQ_DISCARD;
+ io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
}
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 3164b8b..91d4829 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -226,8 +226,8 @@ static void do_metadata(struct work_struct *work)
/*
* Read or write a chunk aligned and sized block of data from a device.
*/
-static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
- int metadata)
+static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int op,
+ int op_flags, int metadata)
{
struct dm_io_region where = {
.bdev = dm_snap_cow(ps->store->snap)->bdev,
@@ -235,7 +235,8 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
.count = ps->store->chunk_size,
};
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = op,
+ .bi_op_flags = op_flags,
.mem.type = DM_IO_VMA,
.mem.ptr.vma = area,
.client = ps->io_client,
@@ -281,14 +282,14 @@ static void skip_metadata(struct pstore *ps)
* Read or write a metadata area. Remembering to skip the first
* chunk which holds the header.
*/
-static int area_io(struct pstore *ps, int rw)
+static int area_io(struct pstore *ps, int op, int op_flags)
{
int r;
chunk_t chunk;
chunk = area_location(ps, ps->current_area);
- r = chunk_io(ps, ps->area, chunk, rw, 0);
+ r = chunk_io(ps, ps->area, chunk, op, op_flags, 0);
if (r)
return r;
@@ -302,7 +303,8 @@ static void zero_memory_area(struct pstore *ps)
static int zero_disk_area(struct pstore *ps, chunk_t area)
{
- return chunk_io(ps, ps->zero_area, area_location(ps, area), WRITE, 0);
+ return chunk_io(ps, ps->zero_area, area_location(ps, area),
+ REQ_OP_WRITE, 0, 0);
}
static int read_header(struct pstore *ps, int *new_snapshot)
@@ -334,7 +336,7 @@ static int read_header(struct pstore *ps, int *new_snapshot)
if (r)
return r;
- r = chunk_io(ps, ps->header_area, 0, READ, 1);
+ r = chunk_io(ps, ps->header_area, 0, REQ_OP_READ, 0, 1);
if (r)
goto bad;
@@ -395,7 +397,7 @@ static int write_header(struct pstore *ps)
dh->version = cpu_to_le32(ps->version);
dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
- return chunk_io(ps, ps->header_area, 0, WRITE, 1);
+ return chunk_io(ps, ps->header_area, 0, REQ_OP_WRITE, 0, 1);
}
/*
@@ -736,7 +738,7 @@ static void persistent_commit_exception(struct dm_exception_store *store,
/*
* Commit exceptions to disk.
*/
- if (ps->valid && area_io(ps, WRITE_FLUSH_FUA))
+ if (ps->valid && area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA))
ps->valid = 0;
/*
@@ -776,7 +778,7 @@ static int persistent_prepare_merge(struct dm_exception_store *store,
return 0;
ps->current_area--;
- r = area_io(ps, READ);
+ r = area_io(ps, REQ_OP_READ, 0);
if (r < 0)
return r;
ps->current_committed = ps->exceptions_per_area;
@@ -813,7 +815,7 @@ static int persistent_commit_merge(struct dm_exception_store *store,
for (i = 0; i < nr_merged; i++)
clear_exception(ps, ps->current_committed - 1 - i);
- r = area_io(ps, WRITE_FLUSH_FUA);
+ r = area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA);
if (r < 0)
return r;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 8017667..f870878 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -338,7 +338,7 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
struct bio *parent_bio)
{
struct request_queue *q = bdev_get_queue(bdev);
- int type = REQ_WRITE | REQ_DISCARD;
+ int op_flags = 0;
struct bio *bio;
if (!q || !nr_sects)
@@ -350,7 +350,7 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
if (flags & BLKDEV_DISCARD_SECURE) {
if (!blk_queue_secdiscard(q))
return -EOPNOTSUPP;
- type |= REQ_SECURE;
+ op_flags |= REQ_SECURE;
}
/*
@@ -365,7 +365,8 @@ static int __blkdev_issue_discard_async(struct block_device *bdev, sector_t sect
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio->bi_iter.bi_size = nr_sects << 9;
- bio->bi_rw |= type;
+ bio->bi_op = REQ_OP_DISCARD;
+ bio->bi_rw |= op_flags;
submit_bio(bio);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 5df4048..1777c9c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2358,6 +2358,7 @@ static struct mapped_device *alloc_dev(int minor)
bio_init(&md->flush_bio);
md->flush_bio.bi_bdev = md->bdev;
+ md->flush_bio.bi_op = REQ_OP_WRITE;
md->flush_bio.bi_rw = WRITE_FLUSH;
dm_stats_init(&md->stats);
diff --git a/include/linux/dm-io.h b/include/linux/dm-io.h
index a68cbe5..b91b023 100644
--- a/include/linux/dm-io.h
+++ b/include/linux/dm-io.h
@@ -57,7 +57,8 @@ struct dm_io_notify {
*/
struct dm_io_client;
struct dm_io_request {
- int bi_rw; /* READ|WRITE - not READA */
+ int bi_op; /* REQ_OP */
+ int bi_op_flags; /* rq_flag_bits */
struct dm_io_memory mem; /* Memory to use for io */
struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
struct dm_io_client *client; /* Client memory handler */
--
1.8.3.1
--
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