Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1438275
| From | Matias Bjørling <m@bjorling.me> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 01/17] lightnvm: break the loop when rqd is not null |
| Date | 2016-07-07 10:00 +0200 |
| Message-ID | <rSco3-3Zm-67@gated-at.bofh.it> (permalink) |
| References | <rSco1-3Zm-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Wenwei Tao <ww.tao0320@gmail.com>
Break the loop when rqd is not null to reduce
an unnecessary schedule.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
drivers/lightnvm/rrpc.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index de86d72..736e669 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -96,10 +96,13 @@ static void rrpc_discard(struct rrpc *rrpc, struct bio *bio)
sector_t len = bio->bi_iter.bi_size / RRPC_EXPOSED_PAGE_SIZE;
struct nvm_rq *rqd;
- do {
+ while (1) {
rqd = rrpc_inflight_laddr_acquire(rrpc, slba, len);
+ if (rqd)
+ break;
+
schedule();
- } while (!rqd);
+ }
if (IS_ERR(rqd)) {
pr_err("rrpc: unable to acquire inflight IO\n");
--
2.1.4
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[GIT PULL 00/17] LightNVM pull request for 4.8 Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 03/17] lightnvm: initialize ppa_addr in dev_to_generic_addr() Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 06/17] lightnvm: remove checkpatch warning for unsigned ints Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 12/17] lightnvm: remove unused lists from struct rrpc_block Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 13/17] lightnvm: remove _unlocked variant of [get/put]_blk Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 11/17] lightnvm: remove nested lock conflict with mm Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 15/17] lightnvm: fix lun offset calculation for mark blk Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 04/17] nvme: lightnvm: make MLC num_pairs little endian Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 02/17] lightnvm: add media manager mark_blk helper Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 05/17] lightnvm: Make functions not used by ouside static Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 09/17] lightnvm: rename gennvm and update description Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 17/17] lightnvm: make __nvm_submit_ppa static Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 16/17] lightnvm: make ppa_list const in nvm_set_rqd_list Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 07/17] lightnvm: fix checkpatch terse errors Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 10/17] lightnvm: move target mgmt into media mgr Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 14/17] lightnvm: make rrpc_map_page call nvm_get_blk outside locks Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 [PATCH 01/17] lightnvm: break the loop when rqd is not null Matias Bjørling <m@bjorling.me> - 2016-07-07 10:00 +0200 Re: [GIT PULL 00/17] LightNVM pull request for 4.8 Jens Axboe <axboe@kernel.dk> - 2016-07-07 17:00 +0200
csiph-web