From: Wang Shilong <wangsl.f...@cn.fujitsu.com>
If @slot=0, we may have an expected item in the previous leaf,
So we should handle that case, otherwise, we will miss inline refs
,fix it.
Signed-off-by: Wang Shilong <wangsl.f...@cn.fujitsu.com>
---
fs/btrfs/backref.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 964679c..4ccd726 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -893,14 +893,13 @@ again:
spin_unlock(&delayed_refs->lock);
}
- if (path->slots[0]) {
- struct extent_buffer *leaf;
- int slot;
+ ret = btrfs_previous_extent_item(fs_info->extent_root, path,
+ key.objectid);
+ if (ret < 0)
+ goto out;
- path->slots[0]--;
- leaf = path->nodes[0];
- slot = path->slots[0];
- btrfs_item_key_to_cpu(leaf, &key, slot);
+ if (ret == 0) {
+ btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
if (key.objectid == bytenr &&
(key.type == BTRFS_EXTENT_ITEM_KEY ||
key.type == BTRFS_METADATA_ITEM_KEY)) {
--
1.8.4
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