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authorJulia Lawall <julia@diku.dk>2009-07-22 16:49:00 -0400
committerChris Mason <chris.mason@oracle.com>2009-07-22 16:49:00 -0400
commit29c5e8ce01f9dad7e24b99c21e4f836d6b0289e0 (patch)
treeca5628ea861a4fdb875e6cc90878853ad74091f2 /fs/btrfs/async-thread.c
parent4a8c9a62d7f7f058eed4b8a6f2c890a887778093 (diff)
downloadop-kernel-dev-29c5e8ce01f9dad7e24b99c21e4f836d6b0289e0.zip
op-kernel-dev-29c5e8ce01f9dad7e24b99c21e4f836d6b0289e0.tar.gz
Btrfs: convert nested spin_lock_irqsave to spin_lock
If spin_lock_irqsave is called twice in a row with the same second argument, the interrupt state at the point of the second call overwrites the value saved by the first call. Indeed, the second call does not need to save the interrupt state, so it is changed to a simple spin_lock. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/async-thread.c')
-rw-r--r--fs/btrfs/async-thread.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 6e4f6c5..019e8af 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -424,11 +424,11 @@ int btrfs_requeue_work(struct btrfs_work *work)
* list
*/
if (worker->idle) {
- spin_lock_irqsave(&worker->workers->lock, flags);
+ spin_lock(&worker->workers->lock);
worker->idle = 0;
list_move_tail(&worker->worker_list,
&worker->workers->worker_list);
- spin_unlock_irqrestore(&worker->workers->lock, flags);
+ spin_unlock(&worker->workers->lock);
}
if (!worker->working) {
wake = 1;
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