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Subject[PATCH] f2fs: make discard command directly
Date
This can reduce the backporting efforts.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/segment.c | 30 +++++++++++++++++-------------
1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 0738f48293cc..ebfd5cd7619e 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -673,8 +673,8 @@ static void f2fs_submit_bio_wait_endio(struct bio *bio)
static int __f2fs_issue_discard_async(struct f2fs_sb_info *sbi,
struct block_device *bdev, block_t blkstart, block_t blklen)
{
+ struct bio_entry *be;
struct bio *bio = NULL;
- int err;

trace_f2fs_issue_discard(sbi->sb, blkstart, blklen);

@@ -683,20 +683,24 @@ static int __f2fs_issue_discard_async(struct f2fs_sb_info *sbi,

blkstart -= FDEV(devi).start_blk;
}
- err = __blkdev_issue_discard(bdev,
- SECTOR_FROM_BLOCK(blkstart),
- SECTOR_FROM_BLOCK(blklen),
- GFP_NOFS, 0, &bio);
- if (!err && bio) {
- struct bio_entry *be = __add_bio_entry(sbi, bio);

- bio->bi_private = be;
- bio->bi_end_io = f2fs_submit_bio_wait_endio;
- bio->bi_opf |= REQ_SYNC;
- submit_bio(bio);
- }
+ if (!blk_queue_discard(bdev_get_queue(bdev)))
+ return 0;

- return err;
+ /* we always submit 4KB-aligned discard commands. */
+ bio = f2fs_bio_alloc(0);
+ bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blkstart);
+ bio->bi_bdev = bdev;
+ bio_set_op_attrs(bio, REQ_OP_DISCARD, 0);
+ bio->bi_iter.bi_size = SECTOR_FROM_BLOCK(blklen) << 9;
+ bio->bi_end_io = f2fs_submit_bio_wait_endio;
+
+ be = __add_bio_entry(sbi, bio);
+
+ bio->bi_private = be;
+ bio->bi_opf |= REQ_SYNC;
+ submit_bio(bio);
+ return 0;
}

#ifdef CONFIG_BLK_DEV_ZONED
--
2.11.0
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