summaryrefslogtreecommitdiff
path: root/fs/btrfs/backref.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/backref.c')
-rw-r--r--fs/btrfs/backref.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 30dbe1c61857..8bc5e8ccb091 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -196,7 +196,7 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path,
struct extent_buffer *eb;
struct btrfs_key key;
struct btrfs_file_extent_item *fi;
- struct extent_inode_elem *eie = NULL;
+ struct extent_inode_elem *eie = NULL, *old = NULL;
u64 disk_byte;
if (level != 0) {
@@ -230,6 +230,7 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path,
if (disk_byte == wanted_disk_byte) {
eie = NULL;
+ old = NULL;
if (extent_item_pos) {
ret = check_extent_in_eb(&key, eb, fi,
*extent_item_pos,
@@ -237,18 +238,20 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path,
if (ret < 0)
break;
}
- if (!ret) {
- ret = ulist_add(parents, eb->start,
- (uintptr_t)eie, GFP_NOFS);
- if (ret < 0)
- break;
- if (!extent_item_pos) {
- ret = btrfs_next_old_leaf(root, path,
- time_seq);
- continue;
- }
+ if (ret > 0)
+ goto next;
+ ret = ulist_add_merge(parents, eb->start,
+ (uintptr_t)eie,
+ (u64 *)&old, GFP_NOFS);
+ if (ret < 0)
+ break;
+ if (!ret && extent_item_pos) {
+ while (old->next)
+ old = old->next;
+ old->next = eie;
}
}
+next:
ret = btrfs_next_old_item(root, path, time_seq);
}