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composite: Add forward_io_simple support

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Signed-off-by: Robert Baldyga <robert.baldyga@huawei.com>
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com>
This commit is contained in:
Robert Baldyga 2023-10-16 22:26:20 +02:00 committed by Michal Mielewczyk
parent 2d303e8d09
commit 1f26ceb563
1 changed files with 39 additions and 0 deletions
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39
src/ocf_composite_volume.c
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@ -291,6 +291,44 @@ void ocf_composite_forward_metadata(ocf_volume_t cvolume,
ocf_forward_end(token, 0);
}
void ocf_composite_forward_io_simple(ocf_volume_t cvolume,
ocf_forward_token_t token, int dir,
uint64_t addr, uint64_t bytes)
{
struct ocf_composite_volume *composite = ocf_volume_get_priv(cvolume);
uint64_t caddr;
int i;
ENV_BUG_ON(addr >= composite->length);
ENV_BUG_ON(addr + bytes > composite->length);
caddr = addr;
for (i = 0; i < composite->members_cnt; i++) {
if (addr >= composite->end_addr[i])
continue;
if (unlikely(!composite->member[i].volume.opened)) {
ocf_forward_end(token, -OCF_ERR_IO);
return;
}
addr = addr - (i > 0 ? composite->end_addr[i-1] : 0);
break;
}
if (caddr + bytes > composite->end_addr[i]) {
ocf_forward_end(token, -OCF_ERR_IO);
return;
}
ocf_forward_io_simple(&composite->member[i].volume, token,
dir, addr, bytes);
/* Put io forward counter to account for the original forward */
ocf_forward_end(token, 0);
}
/* *** VOLUME OPS *** */
static int ocf_composite_volume_open(ocf_volume_t cvolume, void *volume_params)
@ -414,6 +452,7 @@ const struct ocf_volume_properties ocf_composite_volume_properties = {
.forward_discard = ocf_composite_forward_discard,
.forward_write_zeros = ocf_composite_forward_write_zeros,
.forward_metadata = ocf_composite_forward_metadata,
.forward_io_simple = ocf_composite_forward_io_simple,
.open = ocf_composite_volume_open,
.close = ocf_composite_volume_close,