From: Yasunori Goto <y-goto@jp.fujitsu.com>
Date: Wed, 17 Dec 2008 05:48:39 +0000 (-0500)
Subject: ext4: Widen type of ext4_sb_info.s_mb_maxs[]
X-Git-Tag: v2.6.29-rc1~40^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff7ef329b268b603ea4a2303241ef1c3829fd574;p=pandora-kernel.git

ext4: Widen type of ext4_sb_info.s_mb_maxs[]

I chased the cause of following ext4 oops report which is tested on
ia64 box.

http://bugzilla.kernel.org/show_bug.cgi?id=12018

The cause is the size of s_mb_maxs array that is defined as "unsigned
short" in ext4_sb_info structure.  If the file system's block size is
8k or greater, an unsigned short is not wide enough to contain the
value fs->blocksize << 3.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Miao Xie <miaox@cn.fujitsu.com>
Cc: stable@kernel.org
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