145 	if (!test_and_set_bit(PG_HEADLOCK, &req->wb_flags))  in nfs_page_set_headlock()
148 	set_bit(PG_CONTENDED1, &req->wb_flags);  in nfs_page_set_headlock()
150 	return wait_on_bit_lock(&req->wb_flags, PG_HEADLOCK,  in nfs_page_set_headlock()
162 	clear_bit(PG_HEADLOCK, &req->wb_flags);  in nfs_page_clear_headlock()
164 	if (!test_bit(PG_CONTENDED1, &req->wb_flags))  in nfs_page_clear_headlock()
166 	wake_up_bit(&req->wb_flags, PG_HEADLOCK);  in nfs_page_clear_headlock()
212 	WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &head->wb_flags));  in nfs_page_group_sync_on_bit_locked()
213 	WARN_ON_ONCE(test_and_set_bit(bit, &req->wb_flags));  in nfs_page_group_sync_on_bit_locked()
217 		if (!test_bit(bit, &tmp->wb_flags))  in nfs_page_group_sync_on_bit_locked()
225 		clear_bit(bit, &tmp->wb_flags);  in nfs_page_group_sync_on_bit_locked()
268 		WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &prev->wb_head->wb_flags));  in nfs_page_group_init()
280 		if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) {  in nfs_page_group_init()
282 			set_bit(PG_INODE_REF, &req->wb_flags);  in nfs_page_group_init()
385 	clear_bit(PG_BUSY, &req->wb_flags);  in nfs_unlock_request()
387 	if (!test_bit(PG_CONTENDED2, &req->wb_flags))  in nfs_unlock_request()
389 	wake_up_bit(&req->wb_flags, PG_BUSY);  in nfs_unlock_request()
445 	WARN_ON_ONCE(test_bit(PG_TEARDOWN, &req->wb_flags));  in nfs_free_request()
446 	WARN_ON_ONCE(test_bit(PG_UNLOCKPAGE, &req->wb_flags));  in nfs_free_request()
447 	WARN_ON_ONCE(test_bit(PG_UPTODATE, &req->wb_flags));  in nfs_free_request()
448 	WARN_ON_ONCE(test_bit(PG_WB_END, &req->wb_flags));  in nfs_free_request()
449 	WARN_ON_ONCE(test_bit(PG_REMOVE, &req->wb_flags));  in nfs_free_request()
472 	if (!test_bit(PG_BUSY, &req->wb_flags))  in nfs_wait_on_request()
474 	set_bit(PG_CONTENDED2, &req->wb_flags);  in nfs_wait_on_request()
476 	return wait_on_bit_io(&req->wb_flags, PG_BUSY,  in nfs_wait_on_request()