1398 				 struct raid5_percpu *percpu, int i)  in to_addr_conv()  argument
1402 	addr = flex_array_get(percpu->scribble, i);  in to_addr_conv()
1407 static struct page **to_addr_page(struct raid5_percpu *percpu, int i)  in to_addr_page()  argument
1411 	addr = flex_array_get(percpu->scribble, i);  in to_addr_page()
1416 ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute5()  argument
1419 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_compute5()
1441 			  ops_complete_compute, sh, to_addr_conv(sh, percpu, 0));  in ops_run_compute5()
1498 ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute6_1()  argument
1501 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_compute6_1()
1535 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_1()
1548 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_1()
1556 ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute6_2()  argument
1567 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_compute6_2()
1610 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1634 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1641 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1648 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1679 ops_run_prexor5(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_prexor5()  argument
1683 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_prexor5()
1704 			  ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));  in ops_run_prexor5()
1711 ops_run_prexor6(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_prexor6()  argument
1714 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_prexor6()
1724 			  ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));  in ops_run_prexor6()
1849 ops_run_reconstruct5(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_reconstruct5()  argument
1880 	xor_srcs = to_addr_page(percpu, j);  in ops_run_reconstruct5()
1916 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct5()
1920 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct5()
1936 ops_run_reconstruct6(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_reconstruct6()  argument
1964 	blocks = to_addr_page(percpu, j);  in ops_run_reconstruct6()
1982 				  head_sh, to_addr_conv(sh, percpu, j));  in ops_run_reconstruct6()
1985 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct6()
2007 static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_check_p()  argument
2013 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_check_p()
2033 			  to_addr_conv(sh, percpu, 0));  in ops_run_check_p()
2042 static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu, int checkp)  in ops_run_check_pq()  argument
2044 	struct page **srcs = to_addr_page(percpu, 0);  in ops_run_check_pq()
2058 			  sh, to_addr_conv(sh, percpu, 0));  in ops_run_check_pq()
2060 			   &sh->ops.zero_sum_result, percpu->spare_page, &submit);  in ops_run_check_pq()
2069 	struct raid5_percpu *percpu;  in raid_run_ops()  local
2073 	percpu = per_cpu_ptr(conf->percpu, cpu);  in raid_run_ops()
2081 			tx = ops_run_compute5(sh, percpu);  in raid_run_ops()
2084 				tx = ops_run_compute6_1(sh, percpu);  in raid_run_ops()
2086 				tx = ops_run_compute6_2(sh, percpu);  in raid_run_ops()
2095 			tx = ops_run_prexor5(sh, percpu, tx);  in raid_run_ops()
2097 			tx = ops_run_prexor6(sh, percpu, tx);  in raid_run_ops()
2101 		tx = ops_run_partial_parity(sh, percpu, tx);  in raid_run_ops()
2110 			ops_run_reconstruct5(sh, percpu, tx);  in raid_run_ops()
2112 			ops_run_reconstruct6(sh, percpu, tx);  in raid_run_ops()
2117 			ops_run_check_p(sh, percpu);  in raid_run_ops()
2119 			ops_run_check_pq(sh, percpu, 0);  in raid_run_ops()
2121 			ops_run_check_pq(sh, percpu, 1);  in raid_run_ops()
2274 		struct raid5_percpu *percpu;  in resize_chunks()  local
2277 		percpu = per_cpu_ptr(conf->percpu, cpu);  in resize_chunks()
2283 			flex_array_free(percpu->scribble);  in resize_chunks()
2284 			percpu->scribble = scribble;  in resize_chunks()
6726 static void free_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu)  in free_scratch_buffer()  argument
6728 	safe_put_page(percpu->spare_page);  in free_scratch_buffer()
6729 	if (percpu->scribble)  in free_scratch_buffer()
6730 		flex_array_free(percpu->scribble);  in free_scratch_buffer()
6731 	percpu->spare_page = NULL;  in free_scratch_buffer()
6732 	percpu->scribble = NULL;  in free_scratch_buffer()
6735 static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu)  in alloc_scratch_buffer()  argument
6737 	if (conf->level == 6 && !percpu->spare_page)  in alloc_scratch_buffer()
6738 		percpu->spare_page = alloc_page(GFP_KERNEL);  in alloc_scratch_buffer()
6739 	if (!percpu->scribble)  in alloc_scratch_buffer()
6740 		percpu->scribble = scribble_alloc(max(conf->raid_disks,  in alloc_scratch_buffer()
6747 	if (!percpu->scribble || (conf->level == 6 && !percpu->spare_page)) {  in alloc_scratch_buffer()
6748 		free_scratch_buffer(conf, percpu);  in alloc_scratch_buffer()
6759 	free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu));  in raid456_cpu_dead()
6765 	if (!conf->percpu)  in raid5_free_percpu()
6769 	free_percpu(conf->percpu);  in raid5_free_percpu()
6795 	struct raid5_percpu *percpu = per_cpu_ptr(conf->percpu, cpu);  in raid456_cpu_up_prepare()  local
6797 	if (alloc_scratch_buffer(conf, percpu)) {  in raid456_cpu_up_prepare()
6809 	conf->percpu = alloc_percpu(struct raid5_percpu);  in raid5_alloc_percpu()
6810 	if (!conf->percpu)  in raid5_alloc_percpu()