| From | Pankaj Raghav <> | Subject | [PATCH 15/16] f2fs: ensure only power of 2 zone sizes are allowed | Date | Wed, 27 Apr 2022 18:02:54 +0200 |
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From: Luis Chamberlain <mcgrof@kernel.org>
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 <mcgrof@kernel.org> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> --- fs/f2fs/super.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index f64761a15df7..db79abf30002 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3685,6 +3685,10 @@ 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)) -- 2.25.1
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