From: Maxim Patlasov <mpatlasov@parallels.com>
Date: Thu, 21 Mar 2013 14:02:36 +0000 (+0400)
Subject: fuse: implement exclusive wakeup for blocked_waitq
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~12^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=722d2bea8c601d0744e4a37170533fdf6214a678;p=pandora-kernel.git

fuse: implement exclusive wakeup for blocked_waitq

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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