From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 13 Jul 2011 01:40:23 +0000 (-0400)
Subject: Fix ->d_lock locking order in unlazy_walk()
X-Git-Tag: v3.0~33^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=94c0d4ecbe7f9fe56e052b26b2ab484e246c07b4;p=pandora-kernel.git

Fix ->d_lock locking order in unlazy_walk()

Make sure that child is still a child of parent before nested locking
of child->d_lock in unlazy_walk(); otherwise we are risking a violation
of locking order and deadlocks.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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