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authorJan Schmidt <list.btrfs@jan-o-sch.net>2012-06-27 15:23:09 +0200
committerJan Schmidt <list.btrfs@jan-o-sch.net>2012-06-27 16:34:38 +0200
commit9345457f4a539a40056431aeb6f068750857472f (patch)
tree1637c2a734c85ee1d4808b2a5b36a57cd295df27 /fs/btrfs/backref.c
parent8ca78f3eda4bf1799e8c4ba02035623fd7a347df (diff)
downloadop-kernel-dev-9345457f4a539a40056431aeb6f068750857472f.zip
op-kernel-dev-9345457f4a539a40056431aeb6f068750857472f.tar.gz
Btrfs: support root level changes in __resolve_indirect_ref
With the tree mod log, we can have a tree that's two levels high, but btrfs_search_old_slot may still return a path with the tree root at level one instead. __resolve_indirect_ref must care for this and accept parents in a lower level than expected. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Diffstat (limited to 'fs/btrfs/backref.c')
-rw-r--r--fs/btrfs/backref.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 7301cdb..cf0df90 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -301,10 +301,14 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info,
goto out;
eb = path->nodes[level];
- if (!eb) {
- WARN_ON(1);
- ret = 1;
- goto out;
+ while (!eb) {
+ if (!level) {
+ WARN_ON(1);
+ ret = 1;
+ goto out;
+ }
+ level--;
+ eb = path->nodes[level];
}
ret = add_all_parents(root, path, parents, level, &ref->key_for_search,
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