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fuse: optimize wake_up

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Normally blocked_waitq will be inactive, so optimize this case.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2013-04-17 21:50:58 +02:00
parent 722d2bea8c
commit 3c18ef8117
1 changed files with 1 additions and 1 deletions
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2
fs/fuse/dev.c
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@ -379,7 +379,7 @@ __releases(fc->lock)
fc->blocked = 0;
/* Wake up next waiter, if any */
if (!fc->blocked)
if (!fc->blocked && waitqueue_active(&fc->blocked_waitq))
wake_up(&fc->blocked_waitq);
if (fc->num_background == fc->congestion_threshold &&