Btrfs: Metadata reservation for orphan inodes

[deliverable/linux.git] / fs / btrfs / root-tree.c

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 67fa2d29d663dcc2f665b3217bba98302784a60e..b91ccd972644b48048329806044ebc3c62d1b550 100644 (file)
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -259,6 +259,8 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root)
        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 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root)
        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 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root)
                    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);