From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Date: Wed, 24 Jul 2013 02:29:05 +0000 (+0800)
Subject: Btrfs: add sanity checks regarding to parsing mount options
X-Git-Tag: v3.12-rc1~40^2~97
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c334e87f31783ca80b7ce265b25ba5489bfad1a;p=pandora-kernel.git

Btrfs: add sanity checks regarding to parsing mount options

I just notice the following commands succeed:
	mount <dev> <mnt> -o thread_pool=-1

This is ridiculous, only positive thread_pool makes sense,this
patch adds sanity checks for them, and also catches the error of
ENOMEM if allocating memory fails.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

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