ext4: Widen type of ext4_sb_info.s_mb_maxs[]

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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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Yasunori Goto 2008-12-17 00:48:39 -05:00 • committed by Theodore Ts'o

parent 93c0d86371

commit ff7ef329b2

2 changed files with 4 additions and 1 deletions

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3

fs/ext4/ext4_sb.h

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2

fs/ext4/mballoc.c

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