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Diffstat (limited to 'fs/btrfs/root-tree.c')
-rw-r--r--fs/btrfs/root-tree.c43
1 files changed, 5 insertions, 38 deletions
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 612411c74550..668f22844017 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -22,7 +22,6 @@
static void btrfs_read_root_item(struct extent_buffer *eb, int slot,
struct btrfs_root_item *item)
{
- uuid_le uuid;
u32 len;
int need_reset = 0;
@@ -44,8 +43,7 @@ static void btrfs_read_root_item(struct extent_buffer *eb, int slot,
sizeof(*item) - offsetof(struct btrfs_root_item,
generation_v2));
- uuid_le_gen(&uuid);
- memcpy(item->uuid, uuid.b, BTRFS_UUID_SIZE);
+ generate_random_guid(item->uuid);
}
}
@@ -255,25 +253,7 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
root_key.objectid = key.offset;
key.offset++;
- /*
- * The root might have been inserted already, as before we look
- * for orphan roots, log replay might have happened, which
- * triggers a transaction commit and qgroup accounting, which
- * in turn reads and inserts fs roots while doing backref
- * walking.
- */
- root = btrfs_lookup_fs_root(fs_info, root_key.objectid);
- if (root) {
- WARN_ON(!test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED,
- &root->state));
- if (btrfs_root_refs(&root->root_item) == 0) {
- set_bit(BTRFS_ROOT_DEAD_TREE, &root->state);
- btrfs_add_dead_root(root);
- }
- continue;
- }
-
- root = btrfs_read_fs_root(tree_root, &root_key);
+ root = btrfs_get_fs_root(fs_info, &root_key, false);
err = PTR_ERR_OR_ZERO(root);
if (err && err != -ENOENT) {
break;
@@ -300,25 +280,12 @@ int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info)
continue;
}
- err = btrfs_init_fs_root(root);
- if (err) {
- btrfs_free_fs_root(root);
- break;
- }
-
- set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state);
-
- err = btrfs_insert_fs_root(fs_info, root);
- if (err) {
- BUG_ON(err == -EEXIST);
- btrfs_free_fs_root(root);
- break;
- }
-
+ WARN_ON(!test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state));
if (btrfs_root_refs(&root->root_item) == 0) {
set_bit(BTRFS_ROOT_DEAD_TREE, &root->state);
btrfs_add_dead_root(root);
}
+ btrfs_put_root(root);
}
btrfs_free_path(path);
@@ -553,5 +520,5 @@ int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *rsv)
{
- btrfs_block_rsv_release(fs_info, rsv, (u64)-1);
+ btrfs_block_rsv_release(fs_info, rsv, (u64)-1, NULL);
}