diff options
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 95 |
1 files changed, 11 insertions, 84 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index fbe7c104531c..762476f5f08d 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5741,23 +5741,23 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree, return 0; } -static inline void btrfs_end_bbio(struct btrfs_bio *bbio, struct bio *bio, int err) +static inline void btrfs_end_bbio(struct btrfs_bio *bbio, struct bio *bio) { bio->bi_private = bbio->private; bio->bi_end_io = bbio->end_io; - bio_endio(bio, err); + bio_endio(bio); btrfs_put_bbio(bbio); } -static void btrfs_end_bio(struct bio *bio, int err) +static void btrfs_end_bio(struct bio *bio) { struct btrfs_bio *bbio = bio->bi_private; int is_orig_bio = 0; - if (err) { + if (bio->bi_error) { atomic_inc(&bbio->error); - if (err == -EIO || err == -EREMOTEIO) { + if (bio->bi_error == -EIO || bio->bi_error == -EREMOTEIO) { unsigned int stripe_index = btrfs_io_bio(bio)->stripe_index; struct btrfs_device *dev; @@ -5795,17 +5795,16 @@ static void btrfs_end_bio(struct bio *bio, int err) * beyond the tolerance of the btrfs bio */ if (atomic_read(&bbio->error) > bbio->max_errors) { - err = -EIO; + bio->bi_error = -EIO; } else { /* * this bio is actually up to date, we didn't * go over the max number of errors */ - set_bit(BIO_UPTODATE, &bio->bi_flags); - err = 0; + bio->bi_error = 0; } - btrfs_end_bbio(bbio, bio, err); + btrfs_end_bbio(bbio, bio); } else if (!is_orig_bio) { bio_put(bio); } @@ -5826,7 +5825,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_root *root, struct btrfs_pending_bios *pending_bios; if (device->missing || !device->bdev) { - bio_endio(bio, -EIO); + bio_io_error(bio); return; } @@ -5871,34 +5870,6 @@ static noinline void btrfs_schedule_bio(struct btrfs_root *root, &device->work); } -static int bio_size_ok(struct block_device *bdev, struct bio *bio, - sector_t sector) -{ - struct bio_vec *prev; - struct request_queue *q = bdev_get_queue(bdev); - unsigned int max_sectors = queue_max_sectors(q); - struct bvec_merge_data bvm = { - .bi_bdev = bdev, - .bi_sector = sector, - .bi_rw = bio->bi_rw, - }; - - if (WARN_ON(bio->bi_vcnt == 0)) - return 1; - - prev = &bio->bi_io_vec[bio->bi_vcnt - 1]; - if (bio_sectors(bio) > max_sectors) - return 0; - - if (!q->merge_bvec_fn) - return 1; - - bvm.bi_size = bio->bi_iter.bi_size - prev->bv_len; - if (q->merge_bvec_fn(q, &bvm, prev) < prev->bv_len) - return 0; - return 1; -} - static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, struct bio *bio, u64 physical, int dev_nr, int rw, int async) @@ -5932,38 +5903,6 @@ static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, btrfsic_submit_bio(rw, bio); } -static int breakup_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, - struct bio *first_bio, struct btrfs_device *dev, - int dev_nr, int rw, int async) -{ - struct bio_vec *bvec = first_bio->bi_io_vec; - struct bio *bio; - int nr_vecs = bio_get_nr_vecs(dev->bdev); - u64 physical = bbio->stripes[dev_nr].physical; - -again: - bio = btrfs_bio_alloc(dev->bdev, physical >> 9, nr_vecs, GFP_NOFS); - if (!bio) - return -ENOMEM; - - while (bvec <= (first_bio->bi_io_vec + first_bio->bi_vcnt - 1)) { - if (bio_add_page(bio, bvec->bv_page, bvec->bv_len, - bvec->bv_offset) < bvec->bv_len) { - u64 len = bio->bi_iter.bi_size; - - atomic_inc(&bbio->stripes_pending); - submit_stripe_bio(root, bbio, bio, physical, dev_nr, - rw, async); - physical += len; - goto again; - } - bvec++; - } - - submit_stripe_bio(root, bbio, bio, physical, dev_nr, rw, async); - return 0; -} - static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) { atomic_inc(&bbio->error); @@ -5973,8 +5912,8 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) btrfs_io_bio(bio)->mirror_num = bbio->mirror_num; bio->bi_iter.bi_sector = logical >> 9; - - btrfs_end_bbio(bbio, bio, -EIO); + bio->bi_error = -EIO; + btrfs_end_bbio(bbio, bio); } } @@ -6036,18 +5975,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, continue; } - /* - * Check and see if we're ok with this bio based on it's size - * and offset with the given device. - */ - if (!bio_size_ok(dev->bdev, first_bio, - bbio->stripes[dev_nr].physical >> 9)) { - ret = breakup_stripe_bio(root, bbio, first_bio, dev, - dev_nr, rw, async_submit); - BUG_ON(ret); - continue; - } - if (dev_nr < total_devs - 1) { bio = btrfs_bio_clone(first_bio, GFP_NOFS); BUG_ON(!bio); /* -ENOMEM */ |