10c3c3de36
1. new abbreviated previx: ocf_hb (HB stands for hash bucket)
2. clear distinction between functions requiring caller to
hold metadata shared global lock ("naked") vs the ones
which acquire global lock on its own ("prot" for protected)
3. clear distinction between hash bucket locking functions
accepting hash bucket id ("id"), core line and lba ("cline")
and entire request ("req").
Resulting naming scheme:
ocf_hb_(id/cline/req)_(prot/naked)_(lock/unlock/trylock)_(rd/wr)
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
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_hb_req_prot_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_hb_req_prot_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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