| From: Chandan Rajendra <chandan@linux.vnet.ibm.com> |
| Date: Mon, 14 Nov 2016 21:04:37 -0500 |
| Subject: ext4: fix mballoc breakage with 64k block size |
| |
| 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)); |
| |
