fs/btrfs/qgroup.c

195  * Must be called with qgroup_lock held and @prealloc preallocated.
197  * The control on the lifespan of @prealloc would be transferred to this
198  * function, thus caller should no longer touch @prealloc.
201 					  struct btrfs_qgroup *prealloc,
208 	/* Caller must have pre-allocated @prealloc. */
209 	ASSERT(prealloc);
220 			kfree(prealloc);
225 	qgroup = prealloc;
278  * Must be called with qgroup_lock held, the ownership of @prealloc is
285 static int __add_relation_rb(struct btrfs_qgroup_list *prealloc,
290 		kfree(prealloc);
294 	prealloc->group = parent;
295 	prealloc->member = member;
296 	list_add_tail(&prealloc->next_group, &member->groups);
297 	list_add_tail(&prealloc->next_member, &parent->members);
312 			   struct btrfs_qgroup_list *prealloc,
321 	return __add_relation_rb(prealloc, member, parent);
470 			struct btrfs_qgroup *prealloc;
472 			prealloc = kzalloc(sizeof(*prealloc), GFP_KERNEL);
473 			if (!prealloc) {
477 			qgroup = add_qgroup_rb(fs_info, prealloc, found_key.offset);
1006 	struct btrfs_qgroup *prealloc = NULL;
1148 			/* We should not have a stray @prealloc pointer. */
1149 			ASSERT(prealloc == NULL);
1150 			prealloc = kzalloc(sizeof(*prealloc), GFP_NOFS);
1151 			if (!prealloc) {
1164 			qgroup = add_qgroup_rb(fs_info, prealloc, found_key.offset);
1165 			prealloc = NULL;
1208 	ASSERT(prealloc == NULL);
1209 	prealloc = kzalloc(sizeof(*prealloc), GFP_NOFS);
1210 	if (!prealloc) {
1214 	qgroup = add_qgroup_rb(fs_info, prealloc, BTRFS_FS_TREE_OBJECTID);
1215 	prealloc = NULL;
1296 	kfree(prealloc);
1564 	struct btrfs_qgroup_list *prealloc = NULL;
1591 	prealloc = kzalloc(sizeof(*list), GFP_NOFS);
1592 	if (!prealloc) {
1607 	ret = __add_relation_rb(prealloc, member, parent);
1608 	prealloc = NULL;
1616 	kfree(prealloc);
1694 	struct btrfs_qgroup *prealloc = NULL;
1712 	prealloc = kzalloc(sizeof(*prealloc), GFP_NOFS);
1713 	if (!prealloc) {
1723 	qgroup = add_qgroup_rb(fs_info, prealloc, qgroupid);
1725 	prealloc = NULL;
1730 	kfree(prealloc);
3210 	struct btrfs_qgroup *prealloc;
3217 	prealloc = kzalloc(sizeof(*prealloc), GFP_NOFS);
3218 	if (!prealloc)
3320 	dstgroup = add_qgroup_rb(fs_info, prealloc, objectid);
3321 	prealloc = NULL;
3450 	kfree(prealloc);