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fuse: optimize wake_up
Normally blocked_waitq will be inactive, so optimize this case. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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@ -379,7 +379,7 @@ __releases(fc->lock)
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fc->blocked = 0;
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/* Wake up next waiter, if any */
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if (!fc->blocked)
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if (!fc->blocked && waitqueue_active(&fc->blocked_waitq))
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wake_up(&fc->blocked_waitq);
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if (fc->num_background == fc->congestion_threshold &&
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