Commit 69e43e8c authored Nov 14, 2016 by Chandan Rajendra Committed by Theodore Ts'o Nov 14, 2016

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: c9de560d
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

parent 1566a48a

fs/ext4/mballoc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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));

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