btrfs_print_leaf() is used in btrfs_get_extent_inline_ref_type, so
here we really want to print the invalid value of ref type instead of
causing a kernel panic.
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
fs/btrfs/print-tree.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index fcae61e..4448be6 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -63,6 +63,7 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
u32 item_size = btrfs_item_size_nr(eb, slot);
u64 flags;
u64 offset;
+ int is_data;
if (item_size < sizeof(*ei)) {
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
@@ -98,6 +99,8 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
}
+ is_data = !!(flags & BTRFS_EXTENT_FLAG_DATA);
+
ptr = (unsigned long)iref;
end = (unsigned long)ei + item_size;
while (ptr < end) {
@@ -121,7 +124,10 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
offset, btrfs_shared_data_ref_count(eb, sref));
break;
default:
- BUG();
+ btrfs_err(eb->fs_info,
+ "extent %llu has invalid ref type %d\n",
+ eb->start, type);
+ return;
}
ptr += btrfs_extent_inline_ref_size(type);
}
--
2.9.4
--
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