452 		struct nfs_page *subreq = destroy_list;  in nfs_destroy_unlinked_subrequests()  local
454 		destroy_list = (subreq->wb_this_page == old_head) ?  in nfs_destroy_unlinked_subrequests()
455 				   NULL : subreq->wb_this_page;  in nfs_destroy_unlinked_subrequests()
458 		nfs_page_set_headlock(subreq);  in nfs_destroy_unlinked_subrequests()
459 		WARN_ON_ONCE(old_head != subreq->wb_head);  in nfs_destroy_unlinked_subrequests()
462 		subreq->wb_this_page = subreq;  in nfs_destroy_unlinked_subrequests()
463 		subreq->wb_head = subreq;  in nfs_destroy_unlinked_subrequests()
465 		clear_bit(PG_REMOVE, &subreq->wb_flags);  in nfs_destroy_unlinked_subrequests()
468 		if (!kref_read(&subreq->wb_kref)) {  in nfs_destroy_unlinked_subrequests()
470 			if (test_and_clear_bit(PG_TEARDOWN, &subreq->wb_flags)) {  in nfs_destroy_unlinked_subrequests()
471 				nfs_page_clear_headlock(subreq);  in nfs_destroy_unlinked_subrequests()
472 				nfs_free_request(subreq);  in nfs_destroy_unlinked_subrequests()
474 				nfs_page_clear_headlock(subreq);  in nfs_destroy_unlinked_subrequests()
477 		nfs_page_clear_headlock(subreq);  in nfs_destroy_unlinked_subrequests()
481 		if (test_and_clear_bit(PG_INODE_REF, &subreq->wb_flags)) {  in nfs_destroy_unlinked_subrequests()
482 			nfs_release_request(subreq);  in nfs_destroy_unlinked_subrequests()
488 		nfs_unlock_and_release_request(subreq);  in nfs_destroy_unlinked_subrequests()
506 	struct nfs_page *subreq;  in nfs_join_page_group()  local
513 	for (subreq = head->wb_this_page; subreq != head;  in nfs_join_page_group()
514 			subreq = subreq->wb_this_page) {  in nfs_join_page_group()
516 		if (pgbase > subreq->wb_pgbase) {  in nfs_join_page_group()
517 			off -= pgbase - subreq->wb_pgbase;  in nfs_join_page_group()
518 			bytes += pgbase - subreq->wb_pgbase;  in nfs_join_page_group()
519 			pgbase = subreq->wb_pgbase;  in nfs_join_page_group()
521 		bytes = max(subreq->wb_pgbase + subreq->wb_bytes  in nfs_join_page_group()
532 	subreq = head;  in nfs_join_page_group()
534 		nfs_clear_request_commit(subreq);  in nfs_join_page_group()
535 		subreq = subreq->wb_this_page;  in nfs_join_page_group()
536 	} while (subreq != head);  in nfs_join_page_group()