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authorMiklos Szeredi <mszeredi@suse.cz>2008-02-06 01:38:39 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-06 10:41:13 -0800
commitd12def1bcb809b6172ee207a24e00a0a4398df1d (patch)
tree96e151de1e80cacd9202a00b77654533a9754207 /drivers/rtc
parentb57d426445c98789265de6a9338cdb06462d15fb (diff)
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fuse: limit queued background requests
Libfuse basically creates a new thread for each new request. This is fine for synchronous requests, which are naturally limited. However background requests (especially writepage) can cause a thread creation storm. To avoid this, limit the number of background requests available to userspace. This is done by introducing another queue for background requests, and a counter for the number of "active" requests, which are currently available for userspace. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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