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btrfs: don't allocate a btrfs_bio for scrub bios

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All the scrub bios go straight to the block device or the raid56 code,
none of which looks at the btrfs_bio.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2022-04-04 06:45:27 +02:00 committed by David Sterba
parent e1b4b44e00
commit 75c17e6666
1 changed files with 15 additions and 29 deletions
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44
fs/btrfs/scrub.c
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@ -1411,8 +1411,7 @@ static void scrub_recheck_block_on_raid56(struct btrfs_fs_info *fs_info,
if (!first_sector->dev->bdev)
goto out;
bio = btrfs_bio_alloc(BIO_MAX_VECS);
bio_set_dev(bio, first_sector->dev->bdev);
bio = bio_alloc(first_sector->dev->bdev, BIO_MAX_VECS, REQ_OP_READ, GFP_NOFS);
for (i = 0; i < sblock->sector_count; i++) {
struct scrub_sector *sector = sblock->sectors[i];
@ -1642,8 +1641,6 @@ static int scrub_add_sector_to_wr_bio(struct scrub_ctx *sctx,
}
sbio = sctx->wr_curr_bio;
if (sbio->sector_count == 0) {
struct bio *bio;
ret = fill_writer_pointer_gap(sctx, sector->physical_for_dev_replace);
if (ret) {
mutex_unlock(&sctx->wr_lock);
@ -1653,17 +1650,13 @@ static int scrub_add_sector_to_wr_bio(struct scrub_ctx *sctx,
sbio->physical = sector->physical_for_dev_replace;
sbio->logical = sector->logical;
sbio->dev = sctx->wr_tgtdev;
bio = sbio->bio;
if (!bio) {
bio = btrfs_bio_alloc(sctx->sectors_per_bio);
sbio->bio = bio;
if (!sbio->bio) {
sbio->bio = bio_alloc(sbio->dev->bdev, sctx->sectors_per_bio,
REQ_OP_WRITE, GFP_NOFS);
}
bio->bi_private = sbio;
bio->bi_end_io = scrub_wr_bio_end_io;
bio_set_dev(bio, sbio->dev->bdev);
bio->bi_iter.bi_sector = sbio->physical >> 9;
bio->bi_opf = REQ_OP_WRITE;
sbio->bio->bi_private = sbio;
sbio->bio->bi_end_io = scrub_wr_bio_end_io;
sbio->bio->bi_iter.bi_sector = sbio->physical >> 9;
sbio->status = 0;
} else if (sbio->physical + sbio->sector_count * sectorsize !=
sector->physical_for_dev_replace ||
@ -1704,7 +1697,6 @@ static void scrub_wr_submit(struct scrub_ctx *sctx)
sbio = sctx->wr_curr_bio;
sctx->wr_curr_bio = NULL;
WARN_ON(!sbio->bio->bi_bdev);
scrub_pending_bio_inc(sctx);
/* process all writes in a single worker thread. Then the block layer
* orders the requests before sending them to the driver which
@ -2076,22 +2068,16 @@ static int scrub_add_sector_to_rd_bio(struct scrub_ctx *sctx,
}
sbio = sctx->bios[sctx->curr];
if (sbio->sector_count == 0) {
struct bio *bio;
sbio->physical = sector->physical;
sbio->logical = sector->logical;
sbio->dev = sector->dev;
bio = sbio->bio;
if (!bio) {
bio = btrfs_bio_alloc(sctx->sectors_per_bio);
sbio->bio = bio;
if (!sbio->bio) {
sbio->bio = bio_alloc(sbio->dev->bdev, sctx->sectors_per_bio,
REQ_OP_READ, GFP_NOFS);
}
bio->bi_private = sbio;
bio->bi_end_io = scrub_bio_end_io;
bio_set_dev(bio, sbio->dev->bdev);
bio->bi_iter.bi_sector = sbio->physical >> 9;
bio->bi_opf = REQ_OP_READ;
sbio->bio->bi_private = sbio;
sbio->bio->bi_end_io = scrub_bio_end_io;
sbio->bio->bi_iter.bi_sector = sbio->physical >> 9;
sbio->status = 0;
} else if (sbio->physical + sbio->sector_count * sectorsize !=
sector->physical ||
@ -2207,7 +2193,7 @@ static void scrub_missing_raid56_pages(struct scrub_block *sblock)
goto bioc_out;
}
bio = btrfs_bio_alloc(BIO_MAX_VECS);
bio = bio_alloc(NULL, BIO_MAX_VECS, REQ_OP_READ, GFP_NOFS);
bio->bi_iter.bi_sector = logical >> 9;
bio->bi_private = sblock;
bio->bi_end_io = scrub_missing_raid56_end_io;
@ -2823,7 +2809,7 @@ static void scrub_parity_check_and_repair(struct scrub_parity *sparity)
if (ret || !bioc || !bioc->raid_map)
goto bioc_out;
bio = btrfs_bio_alloc(BIO_MAX_VECS);
bio = bio_alloc(NULL, BIO_MAX_VECS, REQ_OP_READ, GFP_NOFS);
bio->bi_iter.bi_sector = sparity->logic_start >> 9;
bio->bi_private = sparity;
bio->bi_end_io = scrub_parity_bio_endio;