Merge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux...

[cascardo/linux.git] / fs / btrfs / backref.c

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 2d3e32e..8729cf6 100644 (file)
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1552,7 +1552,6 @@ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
 {
        int ret;
        int type;
-       struct btrfs_tree_block_info *info;
        struct btrfs_extent_inline_ref *eiref;
 
        if (*ptr == (unsigned long)-1)
@@ -1573,9 +1572,17 @@ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
        }
 
        /* we can treat both ref types equally here */
-       info = (struct btrfs_tree_block_info *)(ei + 1);
        *out_root = btrfs_extent_inline_ref_offset(eb, eiref);
-       *out_level = btrfs_tree_block_level(eb, info);
+
+       if (key->type == BTRFS_EXTENT_ITEM_KEY) {
+               struct btrfs_tree_block_info *info;
+
+               info = (struct btrfs_tree_block_info *)(ei + 1);
+               *out_level = btrfs_tree_block_level(eb, info);
+       } else {
+               ASSERT(key->type == BTRFS_METADATA_ITEM_KEY);
+               *out_level = (u8)key->offset;
+       }
 
        if (ret == 1)
                *ptr = (unsigned long)-1;