Btrfs: fix wrong file extent length
There are two types of the file extent - inline extent and regular extent,
When we log file extents, we didn't take inline extent into account, fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 1ad08e4e4..bd38cef 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -133,7 +133,6 @@
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 @@
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,