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btrfs: use bdev_rw_virt in scrub_one_super

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Replace the code building a bio from a kernel direct map address and
submitting it synchronously with the bdev_rw_virt helper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David Sterba <dsterba@suse.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Link: https://lore.kernel.org/r/20250507120451.4000627-19-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2025-05-07 14:04:42 +02:00
committed by Jens Axboe
parent 5ced480d48
commit 760aa1818b
1 changed files with 2 additions and 8 deletions
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10
fs/btrfs/scrub.c
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@@ -2770,17 +2770,11 @@ static int scrub_one_super(struct scrub_ctx *sctx, struct btrfs_device *dev,
struct page *page, u64 physical, u64 generation)
{
struct btrfs_fs_info *fs_info = sctx->fs_info;
struct bio_vec bvec;
struct bio bio;
struct btrfs_super_block *sb = page_address(page);
int ret;
bio_init(&bio, dev->bdev, &bvec, 1, REQ_OP_READ);
bio.bi_iter.bi_sector = physical >> SECTOR_SHIFT;
__bio_add_page(&bio, page, BTRFS_SUPER_INFO_SIZE, 0);
ret = submit_bio_wait(&bio);
bio_uninit(&bio);
ret = bdev_rw_virt(dev->bdev, physical >> SECTOR_SHIFT, sb,
BTRFS_SUPER_INFO_SIZE, REQ_OP_READ);
if (ret < 0)
return ret;
ret = btrfs_check_super_csum(fs_info, sb);