From: Jan Kara <jack@suse.cz>
Date: Thu, 21 May 2015 14:05:56 +0000 (+0200)
Subject: xfs: Correctly lock inode when removing suid and file capabilities
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~6^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a6de82cab123beaf9406024943caa0242f0618b0;p=pandora-kernel.git

xfs: Correctly lock inode when removing suid and file capabilities

Currently XFS calls file_remove_privs() without holding i_mutex. This is
wrong because that function can end up messing with file permissions and
file capabilities stored in xattrs for which we need i_mutex held.

Fix the problem by grabbing iolock exclusively when we will need to
change anything in permissions / xattrs.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

Reading git-diff-tree failed