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btrfs: reloc: open code read_fs_root() for handle_indirect_tree_backref()

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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>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2020-03-05 15:16:09 +08:00 committed by David Sterba
parent 55465730bc
commit d36e7f0e8f
1 changed files with 5 additions and 1 deletions
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6
fs/btrfs/relocation.c
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@ -473,12 +473,16 @@ 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))