Commit c51f0e6a authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David Sterba
Browse files

btrfs: zoned: fix missing endianness conversion in sb_write_pointer 



generation is an on-disk __le64 value, so use btrfs_super_generation to
convert it to host endian before comparing it.

Fixes: 12659251 ("btrfs: implement log-structured superblock for ZONED mode")
CC: stable@vger.kernel.org # 5.15+
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 013c1c55

fs/btrfs/zoned.c

+2 −1
Original line number Diff line number Diff line
@@ -134,7 +134,8 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones, 
			super[i] = page_address(page[i]);

		}



		if (super[0]->generation > super[1]->generation)

		if (btrfs_super_generation(super[0]) >

		    btrfs_super_generation(super[1]))

			sector = zones[1].start;

		else

			sector = zones[0].start;