diff options
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 1ad08e4e4a15..94aa53b38721 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -133,7 +133,6 @@ fail: return ERR_PTR(ret); } - int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 objectid, @@ -151,6 +150,26 @@ int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, return ret; } +u64 btrfs_file_extent_length(struct btrfs_path *path) +{ + int extent_type; + struct btrfs_file_extent_item *fi; + u64 len; + + fi = btrfs_item_ptr(path->nodes[0], path->slots[0], + struct btrfs_file_extent_item); + extent_type = btrfs_file_extent_type(path->nodes[0], fi); + + if (extent_type == BTRFS_FILE_EXTENT_REG || + extent_type == BTRFS_FILE_EXTENT_PREALLOC) + len = btrfs_file_extent_num_bytes(path->nodes[0], fi); + else if (extent_type == BTRFS_FILE_EXTENT_INLINE) + len = btrfs_file_extent_inline_len(path->nodes[0], fi); + else + BUG(); + + return len; +} static int __btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, struct bio *bio, @@ -441,8 +460,8 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, if (!contig) offset = page_offset(bvec->bv_page) + bvec->bv_offset; - if (!contig && (offset >= ordered->file_offset + ordered->len || - offset < ordered->file_offset)) { + if (offset >= ordered->file_offset + ordered->len || + offset < ordered->file_offset) { unsigned long bytes_left; sums->len = this_sum_bytes; this_sum_bytes = 0; |