From: Dmitry Monakhov <dmonakhov@openvz.org>
Date: Tue, 25 Nov 2014 18:08:04 +0000 (-0500)
Subject: ext4: cleanup GFP flags inside resize path
X-Git-Tag: omap-for-v3.19/fixes-rc1~116^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fdb5543183d027a19805b72025b859af73d0863;p=pandora-kernel.git

ext4: cleanup GFP flags inside resize path

We must use GFP_NOFS instead GFP_KERNEL inside ext4_mb_add_groupinfo
and ext4_calculate_overhead() because they are called from inside a
journal transaction. Call trace:

ioctl
 ->ext4_group_add
   ->journal_start
   ->ext4_setup_new_descs
     ->ext4_mb_add_groupinfo -> GFP_KERNEL
   ->ext4_flex_group_add
     ->ext4_update_super
       ->ext4_calculate_overhead  -> GFP_KERNEL
   ->journal_stop

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

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