From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 2 Dec 2014 23:59:37 +0000 (-0800)
Subject: fat: fix oops on corrupted vfat fs
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~47^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ead0e79bfedd4b563b8ea7c585ca3884b0c89a7;p=pandora-kernel.git

fat: fix oops on corrupted vfat fs

a) don't bother with ->d_time for positives - we only check it for
   negatives anyway.

b) make sure to set it at unlink and rmdir time - at *that* point
   soon-to-be negative dentry matches then-current directory contents

c) don't go into renaming of old alias in vfat_lookup() unless it
   has the same parent (which it will, unless we are seeing corrupted
   image)

[hirofumi@mail.parknet.co.jp: make change minimum, don't call d_move() for dir]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: <stable@vger.kernel.org>	[3.17.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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