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Allocate io and request in single allocation

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Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2019-06-03 11:28:03 +02:00
parent 61414f889e
commit e64bb50a4b
20 changed files with 209 additions and 163 deletions
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26
src/ocf_request.c
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@@ -201,6 +201,10 @@ struct ocf_request *ocf_req_new(ocf_queue_t queue, ocf_core_t core,
req->rw = rw;
req->part_id = PARTITION_DEFAULT;
req->discard.sector = BYTES_TO_SECTORS(addr);
req->discard.nr_sects = BYTES_TO_SECTORS(bytes);
req->discard.handled = 0;
return req;
}
@@ -218,6 +222,24 @@ int ocf_req_alloc_map(struct ocf_request *req)
return 0;
}
int ocf_req_alloc_map_discard(struct ocf_request *req)
{
if (req->byte_length <= MAX_TRIM_RQ_SIZE)
return ocf_req_alloc_map(req);
/*
* NOTE: For cache line size bigger than 8k a single-allocation mapping
* can handle more than MAX_TRIM_RQ_SIZE, so for these cache line sizes
* discard request uses only part of the mapping array.
*/
req->byte_length = MAX_TRIM_RQ_SIZE;
req->core_line_last = ocf_bytes_2_lines(req->cache,
req->byte_position + req->byte_length - 1);
req->core_line_count = req->core_line_last - req->core_line_first + 1;
return ocf_req_alloc_map(req);
}
struct ocf_request *ocf_req_new_extended(ocf_queue_t queue, ocf_core_t core,
uint64_t addr, uint32_t bytes, int rw)
{
@@ -243,10 +265,6 @@ struct ocf_request *ocf_req_new_discard(ocf_queue_t queue, ocf_core_t core,
if (!req)
return NULL;
req->discard.sector = BYTES_TO_SECTORS(addr);
req->discard.nr_sects = BYTES_TO_SECTORS(bytes);
req->discard.handled = 0;
return req;
}