From: Davide Italiano <dccitaliano@gmail.com>
Date: Sun, 3 May 2015 03:21:15 +0000 (-0400)
Subject: ext4: move check under lock scope to close a race.
X-Git-Tag: v3.2.70~94
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4209178b876408926ef6f02e51dd447bcebde977;p=pandora-kernel.git

ext4: move check under lock scope to close a race.

commit 280227a75b56ab5d35854f3a77ef74a7ad56a203 upstream.

fallocate() checks that the file is extent-based and returns
EOPNOTSUPP in case is not. Other tasks can convert from and to
indirect and extent so it's safe to check only after grabbing
the inode mutex.

Signed-off-by: Davide Italiano <dccitaliano@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
[bwh: Backported to 3.2:
 - Adjust context
 - Add the 'out' label]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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