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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2012-03-29 22:57:08 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-03-29 22:57:08 +0400 |
| commit | a5567932fc926739e29e98487128080f40c61710 (patch) | |
| tree | 8bd1995697c0c86f605a6ddb213312454ac7f467 | |
| parent | eb7d8c07f9c5fca6190b0d328179551122d1b8a3 (diff) | |
| download | linux-a5567932fc926739e29e98487128080f40c61710.tar.xz | |
blkcg: change a spin_lock() to spin_lock_irq()
Smatch complains that we re-enable IRQs twice. It looks like we forgot
to disable them here on the spin_trylock() failure path. This was added
in 9f13ef678e "blkcg: use double locking instead of RCU for blkg
synchronization".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>`
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-cgroup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index a74019b67311..aa54c4110f54 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1601,7 +1601,7 @@ static int blkiocg_pre_destroy(struct cgroup_subsys *subsys, } else { spin_unlock_irq(&blkcg->lock); cpu_relax(); - spin_lock(&blkcg->lock); + spin_lock_irq(&blkcg->lock); } } |