1184 	struct btrfs_subvolume_writers *writers;  in btrfs_alloc_subvolume_writers()  local
1187 	writers = kmalloc(sizeof(*writers), GFP_NOFS);  in btrfs_alloc_subvolume_writers()
1188 	if (!writers)  in btrfs_alloc_subvolume_writers()
1191 	ret = percpu_counter_init(&writers->counter, 0, GFP_KERNEL);  in btrfs_alloc_subvolume_writers()
1193 		kfree(writers);  in btrfs_alloc_subvolume_writers()
1197 	init_waitqueue_head(&writers->wait);  in btrfs_alloc_subvolume_writers()
1198 	return writers;  in btrfs_alloc_subvolume_writers()
1202 btrfs_free_subvolume_writers(struct btrfs_subvolume_writers *writers)  in btrfs_free_subvolume_writers()  argument
1204 	percpu_counter_destroy(&writers->counter);  in btrfs_free_subvolume_writers()
1205 	kfree(writers);  in btrfs_free_subvolume_writers()
1553 	struct btrfs_subvolume_writers *writers;  in btrfs_init_fs_root()  local
1563 	writers = btrfs_alloc_subvolume_writers();  in btrfs_init_fs_root()
1564 	if (IS_ERR(writers)) {  in btrfs_init_fs_root()
1565 		ret = PTR_ERR(writers);  in btrfs_init_fs_root()
1568 	root->subv_writers = writers;  in btrfs_init_fs_root()