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fuse: implement exclusive wakeup for blocked_waitq
authorMaxim Patlasov <mpatlasov@parallels.com>
Thu, 21 Mar 2013 14:02:36 +0000 (18:02 +0400)
committerMiklos Szeredi <mszeredi@suse.cz>
Wed, 17 Apr 2013 10:31:45 +0000 (12:31 +0200)
The patch solves thundering herd problem. So far as previous patches ensured
that only allocations for background may block, it's safe to wake up one
waiter. Whoever it is, it will wake up another one in request_end() afterwards.

Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

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