1192 	struct btrfs_subvolume_writers *writers;  in btrfs_alloc_subvolume_writers()  local
1195 	writers = kmalloc(sizeof(*writers), GFP_NOFS);  in btrfs_alloc_subvolume_writers()
1196 	if (!writers)  in btrfs_alloc_subvolume_writers()
1199 	ret = percpu_counter_init(&writers->counter, 0, GFP_KERNEL);  in btrfs_alloc_subvolume_writers()
1201 		kfree(writers);  in btrfs_alloc_subvolume_writers()
1205 	init_waitqueue_head(&writers->wait);  in btrfs_alloc_subvolume_writers()
1206 	return writers;  in btrfs_alloc_subvolume_writers()
1210 btrfs_free_subvolume_writers(struct btrfs_subvolume_writers *writers)  in btrfs_free_subvolume_writers()  argument
1212 	percpu_counter_destroy(&writers->counter);  in btrfs_free_subvolume_writers()
1213 	kfree(writers);  in btrfs_free_subvolume_writers()
1561 	struct btrfs_subvolume_writers *writers;  in btrfs_init_fs_root()  local
1571 	writers = btrfs_alloc_subvolume_writers();  in btrfs_init_fs_root()
1572 	if (IS_ERR(writers)) {  in btrfs_init_fs_root()
1573 		ret = PTR_ERR(writers);  in btrfs_init_fs_root()
1576 	root->subv_writers = writers;  in btrfs_init_fs_root()