| Message ID | 1401998925-6179-1-git-send-email-jbacik@fb.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index f09aa18..84d0912 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -988,11 +988,12 @@ again: goto out; } if (ref->count && ref->parent) { - if (extent_item_pos && !ref->inode_list) { + if (extent_item_pos && !ref->inode_list && + ref->level == 0) { u32 bsz; struct extent_buffer *eb; bsz = btrfs_level_size(fs_info->extent_root, - info_level); + ref->level); eb = read_tree_block(fs_info->extent_root, ref->parent, bsz, 0); if (!eb || !extent_buffer_uptodate(eb)) {
The backref code was looking at nodes as well as leaves when we tried to populate extent item entries. This is not good, and although we go away with it for the most part because we'd skip where disk_bytenr != random_memory, sometimes random_memory would match and suddenly boom. This fixes that problem. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> --- fs/btrfs/backref.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)