From 7f262f737502689ddc77117ffdefaea0a4a25b03 Mon Sep 17 00:00:00 2001 From: Luis Chamberlain Date: Wed, 27 Apr 2022 18:02:54 +0200 Subject: 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: Luis Chamberlain Signed-off-by: Pankaj Raghav Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/f2fs') diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index df232ec85871..d06a577a1208 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -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)) -- cgit v1.2.3