From: Kent Overstreet <kmo@daterainc.com>
Date: Tue, 24 Sep 2013 06:17:34 +0000 (-0700)
Subject: bcache: Fix a shrinker deadlock
X-Git-Tag: v3.12-rc3~34^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a698e08c82dfb9771e0bac12c7337c706d729b6d;p=pandora-kernel.git

bcache: Fix a shrinker deadlock

GFP_NOIO means we could be getting called recursively - mca_alloc() ->
mca_data_alloc() - definitely can't use mutex_lock(bucket_lock) then.
Whoops.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.10
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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