From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 13 Jul 2013 04:40:35 +0000 (-0400)
Subject: ext4: don't allow ext4_free_blocks() to fail due to ENOMEM
X-Git-Tag: v3.2.50~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07b6cb2dd21301a73441a3098514fe44df9caf78;p=pandora-kernel.git

ext4: don't allow ext4_free_blocks() to fail due to ENOMEM

commit e7676a704ee0a1ef71a6b23760b5a8f6896cb1a1 upstream.

The filesystem should not be marked inconsistent if ext4_free_blocks()
is not able to allocate memory.  Unfortunately some callers (most
notably ext4_truncate) don't have a way to reflect an error back up to
the VFS.  And even if we did, most userspace applications won't deal
with most system calls returning ENOMEM anyway.

Reported-by: Nagachandra P <nagachandra@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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