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-rw-r--r--fs/btrfs/print-tree.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index fb2605d..f38e452 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -158,8 +158,7 @@ static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
{
int i;
- u32 type;
- u32 nr = btrfs_header_nritems(l);
+ u32 type, nr;
struct btrfs_item *item;
struct btrfs_root_item *ri;
struct btrfs_dir_item *di;
@@ -172,6 +171,11 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
struct btrfs_key key;
struct btrfs_key found_key;
+ if (!l)
+ return;
+
+ nr = btrfs_header_nritems(l);
+
printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n",
(unsigned long long)btrfs_header_bytenr(l), nr,
btrfs_leaf_free_space(root, l));
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