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-rw-r--r--fs/btrfs/ctree.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index c4bc570a396e..babf7fbaec84 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -3040,6 +3040,10 @@ static noinline int setup_leaf_for_split(struct btrfs_trans_handle *trans,
if (ret > 0 || item_size != btrfs_item_size_nr(leaf, path->slots[0]))
goto err;
+ /* the leaf has changed, it now has room. return now */
+ if (btrfs_leaf_free_space(root, path->nodes[0]) >= ins_len)
+ goto err;
+
if (key.type == BTRFS_EXTENT_DATA_KEY) {
fi = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_file_extent_item);