[PATCH 4/4] f2fs: check discard alignment only for SEQWRITE zones

[Jaegeuk Kim]

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

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/segment.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d76e49c3d1b4..6fff1c58b3b1 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -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);
-- 
2.11.0