From 4209178b876408926ef6f02e51dd447bcebde977 Mon Sep 17 00:00:00 2001
From: Davide Italiano <dccitaliano@gmail.com>
Date: Sat, 2 May 2015 23:21:15 -0400
Subject: [PATCH] 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>
---
Reading git-format-patch failed