From: Liu Bo <liubo2009@cn.fujitsu.com>
Date: Fri, 29 Jun 2012 09:58:47 +0000 (-0600)
Subject: Btrfs: remove redundant r/o check for superblock
X-Git-Tag: v3.6-rc1~81^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=768e9dfe820abdcfb6683e05c60b8634f1a4ffce;p=pandora-kernel.git

Btrfs: remove redundant r/o check for superblock

mnt_want_write() and mnt_want_write_file() will check sb->s_flags with
MS_RDONLY, and we don't need to do it ourselves.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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