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| author | Coly Li <colyli@suse.de> | 2018-08-11 13:20:00 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-08-11 15:46:42 -0600 |
| commit | eb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5 (patch) | |
| tree | ad0d16a069090d085913618d74c928ef828417bc /drivers/md/bcache/super.c | |
| parent | d0c1b89a409fb8f55783e95effeb60d703f81061 (diff) | |
| download | lwn-eb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5.tar.gz lwn-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/super.c')
| -rw-r--r-- | drivers/md/bcache/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index e637d74e2908..94c756c66bd7 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1136,11 +1136,11 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c, list_move(&dc->list, &c->cached_devs); calc_cached_dev_sectors(c); - smp_wmb(); /* * dc->c must be set before dc->count != 0 - paired with the mb in * cached_dev_get() */ + smp_wmb(); refcount_set(&dc->count, 1); /* Block writeback thread, but spawn it */ |