[PATCH 28/40] btrfs: relocation: Open-code read_fs_root() for handle_indirect_tree_backref()

Qu Wenruo
2020-03-23T10:25:47Z

The backref code is going to be moved to backref.c, and read_fs_root()
is just a simple wrapper, open-code it to prepare to the incoming code
move.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
fs/btrfs/relocation.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 29bf34b1114c..df2897f6f206 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -481,12 +481,16 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
struct btrfs_backref_edge *edge;
struct extent_buffer *eb;
struct btrfs_root *root;
+ struct btrfs_key root_key;
struct rb_node *rb_node;
int level;
bool need_check = true;
int ret;

- root = read_fs_root(fs_info, ref_key->offset);
+ root_key.objectid = ref_key->offset;
+ root_key.type = BTRFS_ROOT_ITEM_KEY;
+ root_key.offset = (u64)-1;
+ root = btrfs_get_fs_root(fs_info, &root_key, false);
if (IS_ERR(root))
return PTR_ERR(root);
if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state))
--
2.25.2