Btrfs: Metadata reservation for orphan inodes
reserve metadata space for handling orphan inodes
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 67fa2d2..b91ccd9 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -259,6 +259,8 @@
struct extent_buffer *leaf;
struct btrfs_path *path;
struct btrfs_key key;
+ struct btrfs_key root_key;
+ struct btrfs_root *root;
int err = 0;
int ret;
@@ -270,6 +272,9 @@
key.type = BTRFS_ORPHAN_ITEM_KEY;
key.offset = 0;
+ root_key.type = BTRFS_ROOT_ITEM_KEY;
+ root_key.offset = (u64)-1;
+
while (1) {
ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);
if (ret < 0) {
@@ -294,13 +299,25 @@
key.type != BTRFS_ORPHAN_ITEM_KEY)
break;
- ret = btrfs_find_dead_roots(tree_root, key.offset);
- if (ret) {
+ root_key.objectid = key.offset;
+ key.offset++;
+
+ root = btrfs_read_fs_root_no_name(tree_root->fs_info,
+ &root_key);
+ if (!IS_ERR(root))
+ continue;
+
+ ret = PTR_ERR(root);
+ if (ret != -ENOENT) {
err = ret;
break;
}
- key.offset++;
+ ret = btrfs_find_dead_roots(tree_root, root_key.objectid);
+ if (ret) {
+ err = ret;
+ break;
+ }
}
btrfs_free_path(path);