Commit 92592285 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: check discard alignment only for SEQWRITE zones 



For converntional zones, we don't need to align discard commands to exact zone
size.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 40465257

fs/f2fs/segment.c

+12 −12
Original line number Diff line number Diff line
@@ -793,24 +793,13 @@ static int __f2fs_issue_discard_async(struct f2fs_sb_info *sbi, 
static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,

		struct block_device *bdev, block_t blkstart, block_t blklen)

{

	sector_t nr_sects = SECTOR_FROM_BLOCK(blklen);

	sector_t sector;

	sector_t sector, nr_sects;

	int devi = 0;



	if (sbi->s_ndevs) {

		devi = f2fs_target_device_index(sbi, blkstart);

		blkstart -= FDEV(devi).start_blk;

	}

	sector = SECTOR_FROM_BLOCK(blkstart);



	if (sector & (bdev_zone_sectors(bdev) - 1) ||

	    nr_sects != bdev_zone_sectors(bdev)) {

		f2fs_msg(sbi->sb, KERN_INFO,

			"(%d) %s: Unaligned discard attempted (block %x + %x)",

			devi, sbi->s_ndevs ? FDEV(devi).path: "",

			blkstart, blklen);

		return -EIO;

	}



	/*

	 * We need to know the type of the zone: for conventional zones,
@@ -825,6 +814,17 @@ static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, 
		return __f2fs_issue_discard_async(sbi, bdev, blkstart, blklen);

	case BLK_ZONE_TYPE_SEQWRITE_REQ:

	case BLK_ZONE_TYPE_SEQWRITE_PREF:

		sector = SECTOR_FROM_BLOCK(blkstart);

		nr_sects = SECTOR_FROM_BLOCK(blklen);



		if (sector & (bdev_zone_sectors(bdev) - 1) ||

				nr_sects != bdev_zone_sectors(bdev)) {

			f2fs_msg(sbi->sb, KERN_INFO,

				"(%d) %s: Unaligned discard attempted (block %x + %x)",

				devi, sbi->s_ndevs ? FDEV(devi).path: "",

				blkstart, blklen);

			return -EIO;

		}

		trace_f2fs_issue_reset_zone(bdev, blkstart);

		return blkdev_reset_zones(bdev, sector,

					  nr_sects, GFP_NOFS);