| From | Ben Hutchings <> | Date | Fri, 10 Mar 2017 11:46:10 +0000 | Subject | [PATCH 3.2 016/199] ext4: fix mballoc breakage with 64k block size |
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3.2.87-rc1 review patch. If anyone has any objections, please let me know.
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From: Chandan Rajendra <chandan@linux.vnet.ibm.com>
commit 69e43e8cc971a79dd1ee5d4343d8e63f82725123 upstream.
'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: c9de560ded61f 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> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -652,7 +652,7 @@ static void ext4_mb_mark_free_simple(str 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));
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