53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright(c) 2012-2021 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#include "ocf/ocf.h"
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#include "../ocf_cache_priv.h"
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#include "engine_wa.h"
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#include "engine_common.h"
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#include "cache_engine.h"
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#include "../ocf_request.h"
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#include "../utils/utils_io.h"
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#include "../metadata/metadata.h"
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#define OCF_ENGINE_DEBUG_IO_NAME "wa"
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#include "engine_debug.h"
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int ocf_write_wa(struct ocf_request *req)
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{
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ocf_io_start(&req->ioi.io);
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/* Get OCF request - increase reference counter */
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ocf_req_get(req);
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ocf_req_hash(req);
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ocf_req_hash_lock_rd(req); /*- Metadata RD access -----------------------*/
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/* Traverse request to check if there are mapped cache lines */
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ocf_engine_traverse(req);
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ocf_req_hash_unlock_rd(req); /*- END Metadata RD access -----------------*/
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if (ocf_engine_is_hit(req)) {
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ocf_req_clear(req);
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/* There is HIT, do WT */
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ocf_get_io_if(ocf_cache_mode_wt)->write(req);
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} else {
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ocf_req_clear(req);
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/* MISS, do WI */
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ocf_get_io_if(ocf_cache_mode_wi)->write(req);
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}
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/* Put OCF request - decrease reference counter */
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ocf_req_put(req);
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return 0;
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}
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