diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/inode.c | 28 | ||||
| -rw-r--r-- | fs/btrfs/volumes.c | 78 | ||||
| -rw-r--r-- | fs/btrfs/volumes.h | 2 |
3 files changed, 30 insertions, 78 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 7126493d8d8c..89b9535cda19 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1932,17 +1932,19 @@ int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, u64 length = 0; u64 map_length; int ret; + struct btrfs_io_geometry geom; if (bio_flags & EXTENT_BIO_COMPRESSED) return 0; length = bio->bi_iter.bi_size; map_length = length; - ret = btrfs_map_block(fs_info, btrfs_op(bio), logical, &map_length, - NULL, 0); + ret = btrfs_get_io_geometry(fs_info, btrfs_op(bio), logical, map_length, + &geom); if (ret < 0) return ret; - if (map_length < length + size) + + if (geom.len < length + size) return 1; return 0; } @@ -8308,22 +8310,21 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) struct bio *orig_bio = dip->orig_bio; u64 start_sector = orig_bio->bi_iter.bi_sector; u64 file_offset = dip->logical_offset; - u64 map_length; int async_submit = 0; u64 submit_len; int clone_offset = 0; int clone_len; int ret; blk_status_t status; + struct btrfs_io_geometry geom; - map_length = orig_bio->bi_iter.bi_size; - submit_len = map_length; - ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), start_sector << 9, - &map_length, NULL, 0); + submit_len = orig_bio->bi_iter.bi_size; + ret = btrfs_get_io_geometry(fs_info, btrfs_op(orig_bio), + start_sector << 9, submit_len, &geom); if (ret) return -EIO; - if (map_length >= submit_len) { + if (geom.len >= submit_len) { bio = orig_bio; dip->flags |= BTRFS_DIO_ORIG_BIO_SUBMITTED; goto submit; @@ -8336,10 +8337,10 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) async_submit = 1; /* bio split */ - ASSERT(map_length <= INT_MAX); + ASSERT(geom.len <= INT_MAX); atomic_inc(&dip->pending_bios); do { - clone_len = min_t(int, submit_len, map_length); + clone_len = min_t(int, submit_len, geom.len); /* * This will never fail as it's passing GPF_NOFS and @@ -8376,9 +8377,8 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) start_sector += clone_len >> 9; file_offset += clone_len; - map_length = submit_len; - ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), - start_sector << 9, &map_length, NULL, 0); + ret = btrfs_get_io_geometry(fs_info, btrfs_op(orig_bio), + start_sector << 9, submit_len, &geom); if (ret) goto out_err; } while (submit_len > 0); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 793494690e67..b9606501d33b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5930,7 +5930,7 @@ static bool need_full_stripe(enum btrfs_map_op op) * usually shouldn't happen unless @logical is corrupted, 0 otherwise. */ int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, - u64 logical, u64 len, struct btrfs_io_geometry *io_geom) + u64 logical, u64 len, struct btrfs_io_geometry *io_geom) { struct extent_map *em; struct map_lookup *map; @@ -6037,78 +6037,30 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int patch_the_first_stripe_for_dev_replace = 0; u64 physical_to_patch_in_first_stripe = 0; u64 raid56_full_stripe_start = (u64)-1; + struct btrfs_io_geometry geom; + + ASSERT(bbio_ret); if (op == BTRFS_MAP_DISCARD) return __btrfs_map_block_for_discard(fs_info, logical, *length, bbio_ret); - em = btrfs_get_chunk_map(fs_info, logical, *length); - if (IS_ERR(em)) - return PTR_ERR(em); + ret = btrfs_get_io_geometry(fs_info, op, logical, *length, &geom); + if (ret < 0) + return ret; + em = btrfs_get_chunk_map(fs_info, logical, *length); + ASSERT(em); map = em->map_lookup; - offset = logical - em->start; - stripe_len = map->stripe_len; - stripe_nr = offset; - /* - * stripe_nr counts the total number of stripes we have to stride - * to get to this block - */ - stripe_nr = div64_u64(stripe_nr, stripe_len); + *length = geom.len; + offset = geom.offset; + stripe_len = geom.stripe_len; + stripe_nr = geom.stripe_nr; + stripe_offset = geom.stripe_offset; + raid56_full_stripe_start = geom.raid56_stripe_offset; data_stripes = nr_data_stripes(map); - stripe_offset = stripe_nr * stripe_len; - if (offset < stripe_offset) { - btrfs_crit(fs_info, - "stripe math has gone wrong, stripe_offset=%llu, offset=%llu, start=%llu, logical=%llu, stripe_len=%llu", - stripe_offset, offset, em->start, logical, - stripe_len); - free_extent_map(em); - return -EINVAL; - } - - /* stripe_offset is the offset of this block in its stripe*/ - stripe_offset = offset - stripe_offset; - - /* if we're here for raid56, we need to know the stripe aligned start */ - if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { - unsigned long full_stripe_len = stripe_len * data_stripes; - raid56_full_stripe_start = offset; - - /* allow a write of a full stripe, but make sure we don't - * allow straddling of stripes - */ - raid56_full_stripe_start = div64_u64(raid56_full_stripe_start, - full_stripe_len); - raid56_full_stripe_start *= full_stripe_len; - } - - if (map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) { - u64 max_len; - /* For writes to RAID[56], allow a full stripeset across all disks. - For other RAID types and for RAID[56] reads, just allow a single - stripe (on a single disk). */ - if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && - (op == BTRFS_MAP_WRITE)) { - max_len = stripe_len * data_stripes - - (offset - raid56_full_stripe_start); - } else { - /* we limit the length of each bio to what fits in a stripe */ - max_len = stripe_len - stripe_offset; - } - *length = min_t(u64, em->len - offset, max_len); - } else { - *length = em->len - offset; - } - - /* - * This is for when we're called from btrfs_bio_fits_in_stripe and all - * it cares about is the length - */ - if (!bbio_ret) - goto out; - down_read(&dev_replace->rwsem); dev_replace_is_ongoing = btrfs_dev_replace_is_ongoing(dev_replace); /* diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 2a8e398a8742..7f6aa1816409 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -429,7 +429,7 @@ int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, u64 logical, u64 *length, struct btrfs_bio **bbio_ret); int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, - u64 logical, u64 len, struct btrfs_io_geometry *io_geom); + u64 logical, u64 len, struct btrfs_io_geometry *io_geom); int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, u64 physical, u64 **logical, int *naddrs, int *stripe_len); int btrfs_read_sys_array(struct btrfs_fs_info *fs_info); |