From: Sage Weil <sage@inktank.com>
Date: Tue, 5 Feb 2013 21:41:23 +0000 (-0800)
Subject: ceph: do not set r_old_dentry_dir on link()
X-Git-Tag: v3.15-rc1~61^2~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b58c9b19bddb47a1961608bc62d0c2f3dc9705e;p=pandora-kernel.git

ceph: do not set r_old_dentry_dir on link()

This is racy--we do not know whather d_parent has changed out from
underneath us because i_mutex is not held on the source inode's directory.

Also, taking this reference is useless.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Yan, Zheng <zheng.z.yan@intel.com>
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