drivers/md/raid5.c

1142 	struct stripe_head *head_sh = sh;
1161 		sh = head_sh;
1193 			if (test_bit(R5_ReadRepl, &head_sh->dev[i].flags) && rrdev)
1255 			if (sh != head_sh)
1256 				atomic_inc(&head_sh->count);
1263 			if (test_bit(R5_ReadNoMerge, &head_sh->dev[i].flags))
1311 			if (sh != head_sh)
1312 				atomic_inc(&head_sh->count);
1345 		if (!head_sh->batch_head)
1349 		if (sh != head_sh)
1354 		defer_issue_bios(conf, head_sh->sector, &pending_bios);
1913 	struct stripe_head *head_sh = sh;
1922 		sh = head_sh;
1923 		if (test_and_clear_bit(R5_Wantdrain, &head_sh->dev[i].flags)) {
1965 			if (head_sh->batch_head) {
1969 				if (sh == head_sh)
2040 	struct stripe_head *head_sh = sh;
2065 	if (head_sh->reconstruct_state == reconstruct_state_prexor_drain_run) {
2071 			if (head_sh->dev[i].written ||
2072 			    test_bit(R5_InJournal, &head_sh->dev[i].flags)) {
2094 	last_stripe = !head_sh->batch_head ||
2096 				 struct stripe_head, batch_list) == head_sh;
2101 		atomic_inc(&head_sh->count);
2102 		init_async_submit(&submit, flags, tx, ops_complete_reconstruct, head_sh,
2132 	struct stripe_head *head_sh = sh;
2166 	last_stripe = !head_sh->batch_head ||
2168 				 struct stripe_head, batch_list) == head_sh;
2171 		atomic_inc(&head_sh->count);
2173 				  head_sh, to_addr_conv(sh, percpu, j));
3975 static void break_stripe_batch_list(struct stripe_head *head_sh,
3988 	struct stripe_head *head_sh = sh;
4020 				if (head_sh->batch_head) {
4024 					if (sh != head_sh) {
4029 				sh = head_sh;
4058 		if (head_sh->batch_head) {
4061 			if (sh != head_sh)
4064 		sh = head_sh;
4075 	if (head_sh->batch_head && do_endio)
4076 		break_stripe_batch_list(head_sh, STRIPE_EXPAND_SYNC_FLAGS);
4824 static void break_stripe_batch_list(struct stripe_head *head_sh,
4830 	list_for_each_entry_safe(sh, next, &head_sh->batch_list, batch_list) {
4846 		WARN_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) |
4848 			"head stripe state: %lx\n", head_sh->state);
4853 			      head_sh->state & (1 << STRIPE_INSYNC));
4855 		sh->check_state = head_sh->check_state;
4856 		sh->reconstruct_state = head_sh->reconstruct_state;
4863 			sh->dev[i].flags = head_sh->dev[i].flags &
4871 	spin_lock_irq(&head_sh->stripe_lock);
4872 	head_sh->batch_head = NULL;
4873 	spin_unlock_irq(&head_sh->stripe_lock);
4874 	for (i = 0; i < head_sh->disks; i++)
4875 		if (test_and_clear_bit(R5_Overlap, &head_sh->dev[i].flags))
4876 			wake_up_bit(&head_sh->dev[i].flags, R5_Overlap);
4877 	if (head_sh->state & handle_flags)
4878 		set_bit(STRIPE_HANDLE, &head_sh->state);