From 69e43e8cc971a79dd1ee5d4343d8e63f82725123 Mon Sep 17 00:00:00 2001 From: Chandan Rajendra Date: Mon, 14 Nov 2016 21:04:37 -0500 Subject: [PATCH] ext4: fix mballoc breakage with 64k block size '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 Signed-off-by: Theodore Ts'o Reviewed-by: Andreas Dilger Cc: stable@vger.kernel.org --- fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index f418f55c2bbe..a937ac7ef99f 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -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));