btrfs: Remove fs_info argument from btrfs_uuid_tree_rem

This function always takes a transaction handle which contains a
reference to the fs_info. Use that and remove the extra argument.
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
[ rename the function ]
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ctree.h

@@ -3042,8 +3042,7 @@ void btrfs_update_root_times(struct btrfs_trans_handle *trans,
 /* uuid-tree.c */
 int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
 			u64 subid);
-int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans,
-			struct btrfs_fs_info *fs_info, u8 *uuid, u8 type,
+int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
 			u64 subid);
 int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info,
 			    int (*check_func)(struct btrfs_fs_info *, u8 *, u8,

fs/btrfs/inode.c

@@ -4361,7 +4361,7 @@ int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry)
 		}
 	}
 
-	ret = btrfs_uuid_tree_rem(trans, fs_info, dest->root_item.uuid,
+	ret = btrfs_uuid_tree_remove(trans, dest->root_item.uuid,
 				  BTRFS_UUID_KEY_SUBVOL,
 				  dest->root_key.objectid);
 	if (ret && ret != -ENOENT) {
@@ -4370,7 +4370,7 @@ int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry)
 		goto out_end_trans;
 	}
 	if (!btrfs_is_empty_uuid(dest->root_item.received_uuid)) {
-		ret = btrfs_uuid_tree_rem(trans, fs_info,
+		ret = btrfs_uuid_tree_remove(trans,
 					  dest->root_item.received_uuid,
 					  BTRFS_UUID_KEY_RECEIVED_SUBVOL,
 					  dest->root_key.objectid);

fs/btrfs/ioctl.c

@@ -5018,8 +5018,7 @@ static long _btrfs_ioctl_set_received_subvol(struct file *file,
 				       BTRFS_UUID_SIZE);
 	if (received_uuid_changed &&
 	    !btrfs_is_empty_uuid(root_item->received_uuid)) {
-		ret = btrfs_uuid_tree_rem(trans, fs_info,
-					  root_item->received_uuid,
+		ret = btrfs_uuid_tree_remove(trans, root_item->received_uuid,
 					  BTRFS_UUID_KEY_RECEIVED_SUBVOL,
 					  root->root_key.objectid);
 		if (ret && ret != -ENOENT) {

fs/btrfs/uuid-tree.c

@@ -144,10 +144,10 @@ int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
 	return ret;
 }
 
-int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans,
-			struct btrfs_fs_info *fs_info, u8 *uuid, u8 type,
+int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
 			u64 subid)
 {
+	struct btrfs_fs_info *fs_info = trans->fs_info;
 	struct btrfs_root *uuid_root = fs_info->uuid_root;
 	int ret;
 	struct btrfs_path *path = NULL;
@@ -239,7 +239,7 @@ static int btrfs_uuid_iter_rem(struct btrfs_root *uuid_root, u8 *uuid, u8 type,
 		goto out;
 	}
 
-	ret = btrfs_uuid_tree_rem(trans, uuid_root->fs_info, uuid, type, subid);
+	ret = btrfs_uuid_tree_remove(trans, uuid, type, subid);
 	btrfs_end_transaction(trans);
 
 out: