27 static int check_subvol(struct btree_trans *trans,  in check_subvol()  argument
31 	struct bch_fs *c = trans->c;  in check_subvol()
44 	ret = bch2_snapshot_lookup(trans, snapid, &snapshot);  in check_subvol()
53 		ret = bch2_subvolume_delete(trans, iter->pos.offset);  in check_subvol()
60 			trans, subvol_root_fs_path_parent_nonzero,  in check_subvol()
64 			bch2_bkey_make_mut_typed(trans, iter, &subvol.s_c, 0, subvolume);  in check_subvol()
76 			bch2_bkey_get_iter(trans, &subvol_children_iter,  in check_subvol()
83 				trans, subvol_children_not_set,  in check_subvol()
88 			ret = bch2_btree_bit_mod(trans, BTREE_ID_subvolume_children, pos, true);  in check_subvol()
95 	ret = bch2_inode_find_by_inum_nowarn_trans(trans,  in check_subvol()
100 				trans, subvol_root_wrong_bi_subvol,  in check_subvol()
106 			ret = __bch2_fsck_write_inode(trans, &inode);  in check_subvol()
111 		if (fsck_err(trans, subvol_to_missing_root,  in check_subvol()
115 			ret = bch2_subvolume_delete(trans, iter->pos.offset);  in check_subvol()
133 		ret = bch2_snapshot_tree_lookup(trans, snapshot_tree, &st);  in check_subvol()
142 				trans, subvol_not_master_and_not_snapshot,  in check_subvol()
146 				bch2_bkey_make_mut_typed(trans, iter, &subvol.s_c, 0, subvolume);  in check_subvol()
156 	bch2_trans_iter_exit(trans, &subvol_children_iter);  in check_subvol()
164 		for_each_btree_key_commit(trans, iter,  in bch2_check_subvols()
167 			check_subvol(trans, &iter, k)));  in bch2_check_subvols()
172 static int check_subvol_child(struct btree_trans *trans,  in check_subvol_child()  argument
177 	int ret = bch2_bkey_get_val_typed(trans, BTREE_ID_subvolumes, POS(0, child_k.k->p.offset),  in check_subvol_child()
184 			trans, subvol_children_bad,  in check_subvol_child()
187 		ret = bch2_btree_delete_at(trans, child_iter, 0);  in check_subvol_child()
199 		for_each_btree_key_commit(trans, iter,  in bch2_check_subvol_children()
202 			check_subvol_child(trans, &iter, k)));  in bch2_check_subvol_children()
246 static int subvolume_children_mod(struct btree_trans *trans, struct bpos pos, bool set)  in subvolume_children_mod()  argument
249 		? bch2_btree_bit_mod(trans, BTREE_ID_subvolume_children, pos, set)  in subvolume_children_mod()
253 int bch2_subvolume_trigger(struct btree_trans *trans,  in bch2_subvolume_trigger()  argument
263 			int ret = subvolume_children_mod(trans, children_pos_old, false) ?:  in bch2_subvolume_trigger()
264 				  subvolume_children_mod(trans, children_pos_new, true);  in bch2_subvolume_trigger()
273 int bch2_subvol_has_children(struct btree_trans *trans, u32 subvol)  in bch2_subvol_has_children()  argument
277 	bch2_trans_iter_init(trans, &iter, BTREE_ID_subvolume_children, POS(subvol, 0), 0);  in bch2_subvol_has_children()
279 	bch2_trans_iter_exit(trans, &iter);  in bch2_subvol_has_children()
287 bch2_subvolume_get_inlined(struct btree_trans *trans, unsigned subvol,  in bch2_subvolume_get_inlined()  argument
291 	int ret = bch2_bkey_get_val_typed(trans, BTREE_ID_subvolumes, POS(0, subvol),  in bch2_subvolume_get_inlined()
296 				trans->c, "missing subvolume %u", subvol);  in bch2_subvolume_get_inlined()
300 int bch2_subvolume_get(struct btree_trans *trans, unsigned subvol,  in bch2_subvolume_get()  argument
304 	return bch2_subvolume_get_inlined(trans, subvol, inconsistent_if_not_found, s);  in bch2_subvolume_get()
307 int bch2_subvol_is_ro_trans(struct btree_trans *trans, u32 subvol)  in bch2_subvol_is_ro_trans()  argument
310 	int ret = bch2_subvolume_get_inlined(trans, subvol, true, &s);  in bch2_subvol_is_ro_trans()
321 	return bch2_trans_do(c, bch2_subvol_is_ro_trans(trans, subvol));  in bch2_subvol_is_ro()
324 int bch2_snapshot_get_subvol(struct btree_trans *trans, u32 snapshot,  in bch2_snapshot_get_subvol()  argument
329 	return  bch2_snapshot_lookup(trans, snapshot, &snap) ?:  in bch2_snapshot_get_subvol()
330 		bch2_subvolume_get(trans, le32_to_cpu(snap.subvol), true, subvol);  in bch2_snapshot_get_subvol()
333 int __bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,  in __bch2_subvolume_get_snapshot()  argument
340 	subvol = bch2_bkey_get_iter_typed(trans, &iter,  in __bch2_subvolume_get_snapshot()
346 	bch2_fs_inconsistent_on(warn && bch2_err_matches(ret, ENOENT), trans->c,  in __bch2_subvolume_get_snapshot()
351 	bch2_trans_iter_exit(trans, &iter);  in __bch2_subvolume_get_snapshot()
355 int bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,  in bch2_subvolume_get_snapshot()  argument
358 	return __bch2_subvolume_get_snapshot(trans, subvolid, snapid, true);  in bch2_subvolume_get_snapshot()
361 static int bch2_subvolume_reparent(struct btree_trans *trans,  in bch2_subvolume_reparent()  argument
376 	s = bch2_bkey_make_mut_typed(trans, iter, &k, 0, subvolume);  in bch2_subvolume_reparent()
393 static int bch2_subvolumes_reparent(struct btree_trans *trans, u32 subvolid_to_delete)  in bch2_subvolumes_reparent()  argument
397 	return lockrestart_do(trans,  in bch2_subvolumes_reparent()
398 			bch2_subvolume_get(trans, subvolid_to_delete, true, &s)) ?:  in bch2_subvolumes_reparent()
399 		for_each_btree_key_commit(trans, iter,  in bch2_subvolumes_reparent()
402 			bch2_subvolume_reparent(trans, &iter, k,  in bch2_subvolumes_reparent()
410 static int __bch2_subvolume_delete(struct btree_trans *trans, u32 subvolid)  in __bch2_subvolume_delete()  argument
415 		bch2_bkey_get_iter_typed(trans, &subvol_iter,  in __bch2_subvolume_delete()
420 	bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), trans->c,  in __bch2_subvolume_delete()
428 		bch2_bkey_get_iter_typed(trans, &snapshot_iter,  in __bch2_subvolume_delete()
432 	bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), trans->c,  in __bch2_subvolume_delete()
440 		bch2_bkey_get_iter_typed(trans, &snapshot_tree_iter,  in __bch2_subvolume_delete()
444 	bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), trans->c,  in __bch2_subvolume_delete()
451 			bch2_bkey_make_mut_typed(trans, &snapshot_tree_iter,  in __bch2_subvolume_delete()
461 	ret =   bch2_btree_delete_at(trans, &subvol_iter, 0) ?:  in __bch2_subvolume_delete()
462 		bch2_snapshot_node_set_deleted(trans, snapid);  in __bch2_subvolume_delete()
464 	bch2_trans_iter_exit(trans, &snapshot_tree_iter);  in __bch2_subvolume_delete()
465 	bch2_trans_iter_exit(trans, &snapshot_iter);  in __bch2_subvolume_delete()
466 	bch2_trans_iter_exit(trans, &subvol_iter);  in __bch2_subvolume_delete()
470 static int bch2_subvolume_delete(struct btree_trans *trans, u32 subvolid)  in bch2_subvolume_delete()  argument
472 	return bch2_subvolumes_reparent(trans, subvolid) ?:  in bch2_subvolume_delete()
473 		commit_do(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc,  in bch2_subvolume_delete()
474 			  __bch2_subvolume_delete(trans, subvolid));  in bch2_subvolume_delete()
497 			ret = bch2_trans_run(c, bch2_subvolume_delete(trans, *id));  in bch2_subvolume_wait_for_pagecache_and_delete()
514 static int bch2_subvolume_wait_for_pagecache_and_delete_hook(struct btree_trans *trans,  in bch2_subvolume_wait_for_pagecache_and_delete_hook()  argument
518 	struct bch_fs *c = trans->c;  in bch2_subvolume_wait_for_pagecache_and_delete_hook()
537 int bch2_subvolume_unlink(struct btree_trans *trans, u32 subvolid)  in bch2_subvolume_unlink()  argument
544 	h = bch2_trans_kmalloc(trans, sizeof(*h));  in bch2_subvolume_unlink()
551 	bch2_trans_commit_hook(trans, &h->h);  in bch2_subvolume_unlink()
553 	n = bch2_bkey_get_mut_typed(trans, &iter,  in bch2_subvolume_unlink()
558 		bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), trans->c,  in bch2_subvolume_unlink()
564 	bch2_trans_iter_exit(trans, &iter);  in bch2_subvolume_unlink()
568 int bch2_subvolume_create(struct btree_trans *trans, u64 inode,  in bch2_subvolume_create()  argument
575 	struct bch_fs *c = trans->c;  in bch2_subvolume_create()
582 	ret = bch2_bkey_get_empty_slot(trans, &dst_iter,  in bch2_subvolume_create()
595 		src_subvol = bch2_bkey_get_mut_typed(trans, &src_iter,  in bch2_subvolume_create()
608 	ret = bch2_snapshot_node_create(trans, parent, new_nodes,  in bch2_subvolume_create()
616 		ret = bch2_trans_update(trans, &src_iter, &src_subvol->k_i, 0);  in bch2_subvolume_create()
621 	new_subvol = bch2_bkey_alloc(trans, &dst_iter, 0, subvolume);  in bch2_subvolume_create()
640 	bch2_trans_iter_exit(trans, &src_iter);  in bch2_subvolume_create()
641 	bch2_trans_iter_exit(trans, &dst_iter);  in bch2_subvolume_create()
678 static int __bch2_fs_upgrade_for_subvolumes(struct btree_trans *trans)  in __bch2_fs_upgrade_for_subvolumes()  argument
685 	k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_inodes,  in __bch2_fs_upgrade_for_subvolumes()
692 		bch_err(trans->c, "root inode not found");  in __bch2_fs_upgrade_for_subvolumes()
702 	ret = bch2_inode_write(trans, &iter, &inode);  in __bch2_fs_upgrade_for_subvolumes()
704 	bch2_trans_iter_exit(trans, &iter);  in __bch2_fs_upgrade_for_subvolumes()
712 				       __bch2_fs_upgrade_for_subvolumes(trans));  in bch2_fs_upgrade_for_subvolumes()