1473 static struct page **to_addr_page(struct raid5_percpu *percpu, int i)  in to_addr_page()  argument
1475 	return percpu->scribble + i * percpu->scribble_obj_size;  in to_addr_page()
1480 				 struct raid5_percpu *percpu, int i)  in to_addr_conv()  argument
1482 	return (void *) (to_addr_page(percpu, i) + sh->disks + 2);  in to_addr_conv()
1489 to_addr_offs(struct stripe_head *sh, struct raid5_percpu *percpu)  in to_addr_offs()  argument
1491 	return (unsigned int *) (to_addr_conv(sh, percpu, 0) + sh->disks + 2);  in to_addr_offs()
1495 ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute5()  argument
1498 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_compute5()
1499 	unsigned int *off_srcs = to_addr_offs(sh, percpu);  in ops_run_compute5()
1525 			  ops_complete_compute, sh, to_addr_conv(sh, percpu, 0));  in ops_run_compute5()
1592 ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute6_1()  argument
1595 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_compute6_1()
1596 	unsigned int *offs = to_addr_offs(sh, percpu);  in ops_run_compute6_1()
1632 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_1()
1647 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_1()
1656 ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_compute6_2()  argument
1667 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_compute6_2()
1668 	unsigned int *offs = to_addr_offs(sh, percpu);  in ops_run_compute6_2()
1714 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1742 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1750 					  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1758 				  to_addr_conv(sh, percpu, 0));  in ops_run_compute6_2()
1791 ops_run_prexor5(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_prexor5()  argument
1795 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_prexor5()
1796 	unsigned int *off_srcs = to_addr_offs(sh, percpu);  in ops_run_prexor5()
1825 			  ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));  in ops_run_prexor5()
1833 ops_run_prexor6(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_prexor6()  argument
1836 	struct page **blocks = to_addr_page(percpu, 0);  in ops_run_prexor6()
1837 	unsigned int *offs = to_addr_offs(sh, percpu);  in ops_run_prexor6()
1847 			  ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));  in ops_run_prexor6()
1974 ops_run_reconstruct5(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_reconstruct5()  argument
2007 	xor_srcs = to_addr_page(percpu, j);  in ops_run_reconstruct5()
2008 	off_srcs = to_addr_offs(sh, percpu);  in ops_run_reconstruct5()
2050 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct5()
2054 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct5()
2072 ops_run_reconstruct6(struct stripe_head *sh, struct raid5_percpu *percpu,  in ops_run_reconstruct6()  argument
2101 	blocks = to_addr_page(percpu, j);  in ops_run_reconstruct6()
2102 	offs = to_addr_offs(sh, percpu);  in ops_run_reconstruct6()
2120 				  head_sh, to_addr_conv(sh, percpu, j));  in ops_run_reconstruct6()
2123 				  to_addr_conv(sh, percpu, j));  in ops_run_reconstruct6()
2146 static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)  in ops_run_check_p()  argument
2153 	struct page **xor_srcs = to_addr_page(percpu, 0);  in ops_run_check_p()
2154 	unsigned int *off_srcs = to_addr_offs(sh, percpu);  in ops_run_check_p()
2177 			  to_addr_conv(sh, percpu, 0));  in ops_run_check_p()
2187 static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu, int checkp)  in ops_run_check_pq()  argument
2189 	struct page **srcs = to_addr_page(percpu, 0);  in ops_run_check_pq()
2190 	unsigned int *offs = to_addr_offs(sh, percpu);  in ops_run_check_pq()
2204 			  sh, to_addr_conv(sh, percpu, 0));  in ops_run_check_pq()
2207 			   &sh->ops.zero_sum_result, percpu->spare_page, 0, &submit);  in ops_run_check_pq()
2216 	struct raid5_percpu *percpu;  in raid_run_ops()  local
2220 	percpu = per_cpu_ptr(conf->percpu, cpu);  in raid_run_ops()
2228 			tx = ops_run_compute5(sh, percpu);  in raid_run_ops()
2231 				tx = ops_run_compute6_1(sh, percpu);  in raid_run_ops()
2233 				tx = ops_run_compute6_2(sh, percpu);  in raid_run_ops()
2242 			tx = ops_run_prexor5(sh, percpu, tx);  in raid_run_ops()
2244 			tx = ops_run_prexor6(sh, percpu, tx);  in raid_run_ops()
2248 		tx = ops_run_partial_parity(sh, percpu, tx);  in raid_run_ops()
2257 			ops_run_reconstruct5(sh, percpu, tx);  in raid_run_ops()
2259 			ops_run_reconstruct6(sh, percpu, tx);  in raid_run_ops()
2264 			ops_run_check_p(sh, percpu);  in raid_run_ops()
2266 			ops_run_check_pq(sh, percpu, 0);  in raid_run_ops()
2268 			ops_run_check_pq(sh, percpu, 1);  in raid_run_ops()
2400 static int scribble_alloc(struct raid5_percpu *percpu,  in scribble_alloc()  argument
2418 	kvfree(percpu->scribble);  in scribble_alloc()
2420 	percpu->scribble = scribble;  in scribble_alloc()
2421 	percpu->scribble_obj_size = obj_size;  in scribble_alloc()
2442 		struct raid5_percpu *percpu;  in resize_chunks()  local
2444 		percpu = per_cpu_ptr(conf->percpu, cpu);  in resize_chunks()
2445 		err = scribble_alloc(percpu, new_disks,  in resize_chunks()
7025 static void free_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu)  in free_scratch_buffer()  argument
7027 	safe_put_page(percpu->spare_page);  in free_scratch_buffer()
7028 	percpu->spare_page = NULL;  in free_scratch_buffer()
7029 	kvfree(percpu->scribble);  in free_scratch_buffer()
7030 	percpu->scribble = NULL;  in free_scratch_buffer()
7033 static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu)  in alloc_scratch_buffer()  argument
7035 	if (conf->level == 6 && !percpu->spare_page) {  in alloc_scratch_buffer()
7036 		percpu->spare_page = alloc_page(GFP_KERNEL);  in alloc_scratch_buffer()
7037 		if (!percpu->spare_page)  in alloc_scratch_buffer()
7041 	if (scribble_alloc(percpu,  in alloc_scratch_buffer()
7047 		free_scratch_buffer(conf, percpu);  in alloc_scratch_buffer()
7058 	free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu));  in raid456_cpu_dead()
7064 	if (!conf->percpu)  in raid5_free_percpu()
7068 	free_percpu(conf->percpu);  in raid5_free_percpu()
7094 	struct raid5_percpu *percpu = per_cpu_ptr(conf->percpu, cpu);  in raid456_cpu_up_prepare()  local
7096 	if (alloc_scratch_buffer(conf, percpu)) {  in raid456_cpu_up_prepare()
7108 	conf->percpu = alloc_percpu(struct raid5_percpu);  in raid5_alloc_percpu()
7109 	if (!conf->percpu)  in raid5_alloc_percpu()