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| author | Coly Li <colyli@suse.de> | 2018-08-11 07:20:00 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-08-11 23:46:42 +0200 |
| commit | eb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5 (patch) | |
| tree | ad0d16a069090d085913618d74c928ef828417bc /drivers/md/bcache/closure.h | |
| parent | bcache: remove unnecessary space before ioctl function pointer arguments (diff) | |
| download | linux-eb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5.tar.xz linux-eb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5.zip | |
bcache: add the missing comments for smp_mb()/smp_wmb()
Checkpatch.pl warns there are 2 locations of smp_mb() and smp_wmb()
without code comment. This patch adds the missing code comments for
these memory barrier calls.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/closure.h')
| -rw-r--r-- | drivers/md/bcache/closure.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h index 7f3594c0be14..eca0d496b686 100644 --- a/drivers/md/bcache/closure.h +++ b/drivers/md/bcache/closure.h @@ -289,10 +289,12 @@ static inline void closure_init_stack(struct closure *cl) } /** - * closure_wake_up - wake up all closures on a wait list. + * closure_wake_up - wake up all closures on a wait list, + * with memory barrier */ static inline void closure_wake_up(struct closure_waitlist *list) { + /* Memory barrier for the wait list */ smp_mb(); __closure_wake_up(list); } |