Btrfs: do not continue if out of memory happens
If out of memory happens, we should return -ENOMEM directly to the caller
rather than continue the work.
Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 7f448b8..8623c74 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -352,6 +352,8 @@
err = __resolve_indirect_ref(fs_info, search_commit_root,
time_seq, ref, parents,
extent_item_pos);
+ if (err == -ENOMEM)
+ goto out;
if (err)
continue;
@@ -367,7 +369,7 @@
new_ref = kmalloc(sizeof(*new_ref), GFP_NOFS);
if (!new_ref) {
ret = -ENOMEM;
- break;
+ goto out;
}
memcpy(new_ref, ref, sizeof(*ref));
new_ref->parent = node->val;
@@ -377,7 +379,7 @@
}
ulist_reinit(parents);
}
-
+out:
ulist_free(parents);
return ret;
}
