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-rw-r--r--fs/btrfs/disk-io.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index c4e673a94426..1cd325765aaa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -559,7 +559,15 @@ static noinline int check_leaf(struct btrfs_root *root,
u32 nritems = btrfs_header_nritems(leaf);
int slot;
- if (nritems == 0) {
+ /*
+ * Extent buffers from a relocation tree have a owner field that
+ * corresponds to the subvolume tree they are based on. So just from an
+ * extent buffer alone we can not find out what is the id of the
+ * corresponding subvolume tree, so we can not figure out if the extent
+ * buffer corresponds to the root of the relocation tree or not. So skip
+ * this check for relocation trees.
+ */
+ if (nritems == 0 && !btrfs_header_flag(leaf, BTRFS_HEADER_FLAG_RELOC)) {
struct btrfs_root *check_root;
key.objectid = btrfs_header_owner(leaf);
@@ -587,6 +595,9 @@ static noinline int check_leaf(struct btrfs_root *root,
return 0;
}
+ if (nritems == 0)
+ return 0;
+
/* Check the 0 item */
if (btrfs_item_offset_nr(leaf, 0) + btrfs_item_size_nr(leaf, 0) !=
BTRFS_LEAF_DATA_SIZE(root)) {