diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-04-04 07:45:20 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-05-16 18:03:12 +0300 |
| commit | e9458bfe5fff9588096a9f4e8975be762e313af4 (patch) | |
| tree | c9374da16ef90f5d76f55688c4f368e298a4d58b /fs/btrfs/extent_io.c | |
| parent | 91e3b5f1e293a2e617313a85bafd80d5eb4810f1 (diff) | |
| download | linux-e9458bfe5fff9588096a9f4e8975be762e313af4.tar.xz | |
btrfs: use on-stack bio in repair_io_failure
The I/O in repair_io_failue is synchronous and doesn't need a btrfs_bio,
so just use an on-stack bio. Also cleanup the error handling to use goto
labels and not discard the actual return values.
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>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 52 |
1 files changed, 24 insertions, 28 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a26290a876cd..3d3599717d4a 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2305,12 +2305,13 @@ static int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, u64 length, u64 logical, struct page *page, unsigned int pg_offset, int mirror_num) { - struct bio *bio; struct btrfs_device *dev; + struct bio_vec bvec; + struct bio bio; u64 map_length = 0; u64 sector; struct btrfs_io_context *bioc = NULL; - int ret; + int ret = 0; ASSERT(!(fs_info->sb->s_flags & SB_RDONLY)); BUG_ON(!mirror_num); @@ -2318,8 +2319,6 @@ static int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, if (btrfs_repair_one_zone(fs_info, logical)) return 0; - bio = btrfs_bio_alloc(1); - bio->bi_iter.bi_size = 0; map_length = length; /* @@ -2337,53 +2336,50 @@ static int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, */ ret = btrfs_map_block(fs_info, BTRFS_MAP_READ, logical, &map_length, &bioc, 0); - if (ret) { - btrfs_bio_counter_dec(fs_info); - bio_put(bio); - return -EIO; - } + if (ret) + goto out_counter_dec; ASSERT(bioc->mirror_num == 1); } else { ret = btrfs_map_block(fs_info, BTRFS_MAP_WRITE, logical, &map_length, &bioc, mirror_num); - if (ret) { - btrfs_bio_counter_dec(fs_info); - bio_put(bio); - return -EIO; - } + if (ret) + goto out_counter_dec; BUG_ON(mirror_num != bioc->mirror_num); } sector = bioc->stripes[bioc->mirror_num - 1].physical >> 9; - bio->bi_iter.bi_sector = sector; dev = bioc->stripes[bioc->mirror_num - 1].dev; btrfs_put_bioc(bioc); + if (!dev || !dev->bdev || !test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state)) { - btrfs_bio_counter_dec(fs_info); - bio_put(bio); - return -EIO; + ret = -EIO; + goto out_counter_dec; } - bio_set_dev(bio, dev->bdev); - bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; - bio_add_page(bio, page, length, pg_offset); - btrfsic_check_bio(bio); - if (submit_bio_wait(bio)) { + bio_init(&bio, dev->bdev, &bvec, 1, REQ_OP_WRITE | REQ_SYNC); + bio.bi_iter.bi_sector = sector; + __bio_add_page(&bio, page, length, pg_offset); + + btrfsic_check_bio(&bio); + ret = submit_bio_wait(&bio); + if (ret) { /* try to remap that extent elsewhere? */ - btrfs_bio_counter_dec(fs_info); - bio_put(bio); btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_WRITE_ERRS); - return -EIO; + goto out_bio_uninit; } btrfs_info_rl_in_rcu(fs_info, "read error corrected: ino %llu off %llu (dev %s sector %llu)", ino, start, rcu_str_deref(dev->name), sector); + ret = 0; + +out_bio_uninit: + bio_uninit(&bio); +out_counter_dec: btrfs_bio_counter_dec(fs_info); - bio_put(bio); - return 0; + return ret; } int btrfs_repair_eb_io_failure(const struct extent_buffer *eb, int mirror_num) |