Commit 7f262f73 authored by Luis Chamberlain's avatar Luis Chamberlain Committed by Jaegeuk Kim
Browse files

f2fs: ensure only power of 2 zone sizes are allowed 



F2FS zoned support has power of 2 zone size assumption in many places
such as in __f2fs_issue_discard_zone, init_blkz_info. As the power of 2
requirement has been removed from the block layer, explicitly add a
condition in f2fs to allow only power of 2 zone size devices.

This condition will be relaxed once those calculation based on power of
2 is made generic.

Signed-off-by: default avatarLuis Chamberlain <mcgrof@kernel.org>
Signed-off-by: default avatarPankaj Raghav <p.raghav@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent d46db459

fs/f2fs/super.c

+4 −0
Original line number Diff line number Diff line
@@ -3658,6 +3658,10 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 
		return 0;



	zone_sectors = bdev_zone_sectors(bdev);

	if (!is_power_of_2(zone_sectors)) {

		f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");

		return -EINVAL;

	}



	if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=

				SECTOR_TO_BLOCK(zone_sectors))