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ext4: fix mballoc breakage with 64k block size

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'border' variable is set to a value of 2 times the block size of the
underlying filesystem. With 64k block size, the resulting value won't
fit into a 16-bit variable. Hence this commit changes the data type of
'border' to 'unsigned int'.

Fixes: c9de560ded
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@vger.kernel.org
This commit is contained in:
Chandan Rajendra 2016-11-14 21:04:37 -05:00 committed by Theodore Ts'o
parent 1566a48aaa
commit 69e43e8cc9
1 changed files with 1 additions and 1 deletions
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2
fs/ext4/mballoc.c
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@ -669,7 +669,7 @@ static void ext4_mb_mark_free_simple(struct super_block *sb,
ext4_grpblk_t min;
ext4_grpblk_t max;
ext4_grpblk_t chunk;
unsigned short border;
unsigned int border;
BUG_ON(len > EXT4_CLUSTERS_PER_GROUP(sb));