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Groups > linux.kernel > #1493767
| From | Ross Zwisler <ross.zwisler@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 06/12] dax: consistent variable naming for DAX entries |
| Date | 2016-09-30 01:00 +0200 |
| Message-ID | <smSt3-1Wd-1@gated-at.bofh.it> (permalink) |
| References | <smSjo-1SH-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
No functional change.
Consistently use the variable name 'entry' instead of 'ret' for DAX radix
tree entries. This was already happening in most of the code, so update
get_unlocked_mapping_entry(), grab_mapping_entry() and
dax_unlock_mapping_entry().
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
fs/dax.c | 34 +++++++++++++++++-----------------
1 file changed, 17 insertions(+), 17 deletions(-)
diff --git a/fs/dax.c b/fs/dax.c
index ac28cdf..baef586 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -357,7 +357,7 @@ static inline void *unlock_slot(struct address_space *mapping, void **slot)
static void *get_unlocked_mapping_entry(struct address_space *mapping,
pgoff_t index, void ***slotp)
{
- void *ret, **slot;
+ void *entry, **slot;
struct wait_exceptional_entry_queue ewait;
wait_queue_head_t *wq = dax_entry_waitqueue(mapping, index);
@@ -367,13 +367,13 @@ static void *get_unlocked_mapping_entry(struct address_space *mapping,
ewait.key.index = index;
for (;;) {
- ret = __radix_tree_lookup(&mapping->page_tree, index, NULL,
+ entry = __radix_tree_lookup(&mapping->page_tree, index, NULL,
&slot);
- if (!ret || !radix_tree_exceptional_entry(ret) ||
+ if (!entry || !radix_tree_exceptional_entry(entry) ||
!slot_locked(mapping, slot)) {
if (slotp)
*slotp = slot;
- return ret;
+ return entry;
}
prepare_to_wait_exclusive(wq, &ewait.wait,
TASK_UNINTERRUPTIBLE);
@@ -396,13 +396,13 @@ static void *get_unlocked_mapping_entry(struct address_space *mapping,
*/
static void *grab_mapping_entry(struct address_space *mapping, pgoff_t index)
{
- void *ret, **slot;
+ void *entry, **slot;
restart:
spin_lock_irq(&mapping->tree_lock);
- ret = get_unlocked_mapping_entry(mapping, index, &slot);
+ entry = get_unlocked_mapping_entry(mapping, index, &slot);
/* No entry for given index? Make sure radix tree is big enough. */
- if (!ret) {
+ if (!entry) {
int err;
spin_unlock_irq(&mapping->tree_lock);
@@ -410,10 +410,10 @@ restart:
mapping_gfp_mask(mapping) & ~__GFP_HIGHMEM);
if (err)
return ERR_PTR(err);
- ret = (void *)(RADIX_TREE_EXCEPTIONAL_ENTRY |
+ entry = (void *)(RADIX_TREE_EXCEPTIONAL_ENTRY |
RADIX_DAX_ENTRY_LOCK);
spin_lock_irq(&mapping->tree_lock);
- err = radix_tree_insert(&mapping->page_tree, index, ret);
+ err = radix_tree_insert(&mapping->page_tree, index, entry);
radix_tree_preload_end();
if (err) {
spin_unlock_irq(&mapping->tree_lock);
@@ -425,11 +425,11 @@ restart:
/* Good, we have inserted empty locked entry into the tree. */
mapping->nrexceptional++;
spin_unlock_irq(&mapping->tree_lock);
- return ret;
+ return entry;
}
/* Normal page in radix tree? */
- if (!radix_tree_exceptional_entry(ret)) {
- struct page *page = ret;
+ if (!radix_tree_exceptional_entry(entry)) {
+ struct page *page = entry;
get_page(page);
spin_unlock_irq(&mapping->tree_lock);
@@ -442,9 +442,9 @@ restart:
}
return page;
}
- ret = lock_slot(mapping, slot);
+ entry = lock_slot(mapping, slot);
spin_unlock_irq(&mapping->tree_lock);
- return ret;
+ return entry;
}
void dax_wake_mapping_entry_waiter(struct address_space *mapping,
@@ -469,11 +469,11 @@ void dax_wake_mapping_entry_waiter(struct address_space *mapping,
void dax_unlock_mapping_entry(struct address_space *mapping, pgoff_t index)
{
- void *ret, **slot;
+ void *entry, **slot;
spin_lock_irq(&mapping->tree_lock);
- ret = __radix_tree_lookup(&mapping->page_tree, index, NULL, &slot);
- if (WARN_ON_ONCE(!ret || !radix_tree_exceptional_entry(ret) ||
+ entry = __radix_tree_lookup(&mapping->page_tree, index, NULL, &slot);
+ if (WARN_ON_ONCE(!entry || !radix_tree_exceptional_entry(entry) ||
!slot_locked(mapping, slot))) {
spin_unlock_irq(&mapping->tree_lock);
return;
--
2.7.4
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH v4 00/12] re-enable DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 00:50 +0200
[PATCH v4 06/12] dax: consistent variable naming for DAX entries Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 06/12] dax: consistent variable naming for DAX entries Jan Kara <jack@suse.cz> - 2016-10-03 11:40 +0200
[PATCH v4 02/12] ext4: tell DAX the size of allocation holes Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
[PATCH v4 05/12] dax: make 'wait_table' global variable static Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 05/12] dax: make 'wait_table' global variable static Jan Kara <jack@suse.cz> - 2016-10-03 11:40 +0200
[PATCH v4 12/12] dax: remove "depends on BROKEN" from FS_DAX_PMD Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
[PATCH v4 09/12] dax: correct dax iomap code namespace Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 09/12] dax: correct dax iomap code namespace Christoph Hellwig <hch@lst.de> - 2016-09-30 11:00 +0200
Re: [PATCH v4 09/12] dax: correct dax iomap code namespace Jan Kara <jack@suse.cz> - 2016-10-03 12:00 +0200
[PATCH v4 07/12] dax: coordinate locking for offsets in PMD range Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 07/12] dax: coordinate locking for offsets in PMD range Christoph Hellwig <hch@infradead.org> - 2016-09-30 11:50 +0200
Re: [PATCH v4 07/12] dax: coordinate locking for offsets in PMD range Jan Kara <jack@suse.cz> - 2016-10-03 12:00 +0200
Re: [PATCH v4 07/12] dax: coordinate locking for offsets in PMD range Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-03 20:50 +0200
[PATCH v4 01/12] ext4: allow DAX writeback for hole punch Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
[PATCH v4 04/12] ext2: remove support for DAX PMD faults Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 04/12] ext2: remove support for DAX PMD faults Jan Kara <jack@suse.cz> - 2016-10-03 11:40 +0200
[PATCH v4 03/12] dax: remove buffer_size_valid() Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 03/12] dax: remove buffer_size_valid() Christoph Hellwig <hch@lst.de> - 2016-09-30 10:50 +0200
[PATCH v4 11/12] xfs: use struct iomap based DAX PMD fault path Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
[PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Christoph Hellwig <hch@infradead.org> - 2016-09-30 12:00 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-03 23:20 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Jan Kara <jack@suse.cz> - 2016-10-03 13:10 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Christoph Hellwig <hch@lst.de> - 2016-10-03 18:40 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-03 23:10 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Jan Kara <jack@suse.cz> - 2016-10-04 08:00 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-04 17:40 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Jan Kara <jack@suse.cz> - 2016-10-05 08:00 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-06 23:40 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-07 05:00 +0200
Re: [PATCH v4 10/12] dax: add struct iomap based DAX PMD support Jan Kara <jack@suse.cz> - 2016-10-07 09:50 +0200
[PATCH v4 08/12] dax: remove dax_pmd_fault() Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 01:00 +0200
Re: [PATCH v4 08/12] dax: remove dax_pmd_fault() Jan Kara <jack@suse.cz> - 2016-10-03 12:00 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Dave Chinner <david@fromorbit.com> - 2016-09-30 01:50 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-09-30 05:10 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support "Darrick J. Wong" <darrick.wong@oracle.com> - 2016-09-30 06:10 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-03 21:00 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Dave Chinner <david@fromorbit.com> - 2016-09-30 08:50 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-03 23:20 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-10-04 01:10 +0200
Re: [PATCH v4 00/12] re-enable DAX PMD support Christoph Hellwig <hch@infradead.org> - 2016-09-30 13:50 +0200
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