[PATCH 15/16] btrfs: move qgroup init/exit code into open_ctree_seq[] array

[Qu Wenruo <wqu@suse.com>]

The qgroup related code is already extracted into two functions,
btrfs_read_qgroup_config() and btrfs_free_qgroup_config().

They are perfect matches for open_ctree_seq[], so just move them into
open_ctree_seq[] array.

And with the usage of open_ctree_seq[], there is no more need for @err
variable, just remove it.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/disk-io.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7d46c9442b0f..14dcec9a23aa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3897,6 +3897,9 @@ static const struct init_sequence open_ctree_seq[] = {
 	}, {
 		.init_func = open_ctree_kthread_init,
 		.exit_func = open_ctree_kthread_exit,
+	}, {
+		.init_func = btrfs_read_qgroup_config,
+		.exit_func = btrfs_free_qgroup_config,
 	}
 };
 
@@ -3906,7 +3909,6 @@ int __cold open_ctree(struct super_block *sb, char *options)
 	struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
 	bool open_ctree_res[ARRAY_SIZE(open_ctree_seq)] = {0};
 	int ret;
-	int err = -EINVAL;
 	int i;
 
 	fs_info->sb = sb;
@@ -3922,10 +3924,6 @@ int __cold open_ctree(struct super_block *sb, char *options)
 		open_ctree_res[i] = true;
 	}
 
-	ret = btrfs_read_qgroup_config(fs_info);
-	if (ret)
-		goto fail;
-
 	if (btrfs_build_ref_tree(fs_info))
 		btrfs_err(fs_info, "couldn't build ref tree");
 
@@ -3934,10 +3932,8 @@ int __cold open_ctree(struct super_block *sb, char *options)
 	    !btrfs_test_opt(fs_info, NOLOGREPLAY)) {
 		btrfs_info(fs_info, "start tree-log replay");
 		ret = btrfs_replay_log(fs_info, fs_devices);
-		if (ret) {
-			err = ret;
-			goto fail_qgroup;
-		}
+		if (ret)
+			goto fail;
 	}
 
 	if (sb_rdonly(fs_info->sb))
@@ -3974,9 +3970,6 @@ int __cold open_ctree(struct super_block *sb, char *options)
 	btrfs_clear_oneshot_options(fs_info);
 	return 0;
 
-fail_qgroup:
-	btrfs_free_qgroup_config(fs_info);
-
 fail:
 	for (i = ARRAY_SIZE(open_ctree_seq) - 1; i >= 0; i--) {
 		if (!open_ctree_res[i] || !open_ctree_seq[i].exit_func)
@@ -3985,9 +3978,7 @@ int __cold open_ctree(struct super_block *sb, char *options)
 		open_ctree_res[i] = false;
 	}
 	btrfs_close_devices(fs_info->fs_devices);
-	if (ret < 0)
-		err = ret;
-	return err;
+	return ret;
 }
 ALLOW_ERROR_INJECTION(open_ctree, ERRNO);
 
-- 
2.37.3