66fe5f75bb
Adds ability to send trim commands to FTL - only 4MiB aligned requests (both for offset and length of request) will be processed. During a trim operation an L2P page (containing 1024 4B entries, 1 per user LBA; which is where the 4MiB alignment comes from) will be marked as unmapped. After this point any L2P access to that page will actually set the entries themselves as FTL_ADDR_INVALID. This is done to make the trim as fast as possible, since for large requests it's probable that most of the L2P pages aren't actually in DRAM. Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com> Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Change-Id: I4a04ee9498a2a6939af31b06f2e45d2b7cccbf19 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13378 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
28 lines
1.2 KiB
C
28 lines
1.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#ifndef FTL_L2P_CACHE_H
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#define FTL_L2P_CACHE_H
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#define FTL_L2P_CACHE_MD_NAME_L1 "l2p_l1"
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#define FTL_L2P_CACHE_MD_NAME_L2 "l2p_l2"
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#define FTL_L2P_CACHE_MD_NAME_L2_CTX "l2p_l2_ctx"
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int ftl_l2p_cache_init(struct spdk_ftl_dev *dev);
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void ftl_l2p_cache_deinit(struct spdk_ftl_dev *dev);
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void ftl_l2p_cache_pin(struct spdk_ftl_dev *dev, struct ftl_l2p_pin_ctx *pin_ctx);
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void ftl_l2p_cache_unpin(struct spdk_ftl_dev *dev, uint64_t lba, uint64_t count);
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ftl_addr ftl_l2p_cache_get(struct spdk_ftl_dev *dev, uint64_t lba);
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void ftl_l2p_cache_set(struct spdk_ftl_dev *dev, uint64_t lba, ftl_addr addr);
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void ftl_l2p_cache_unmap(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
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void ftl_l2p_cache_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
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void ftl_l2p_cache_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
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void ftl_l2p_cache_persist(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
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void ftl_l2p_cache_process(struct spdk_ftl_dev *dev);
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bool ftl_l2p_cache_is_halted(struct spdk_ftl_dev *dev);
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void ftl_l2p_cache_halt(struct spdk_ftl_dev *dev);
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#endif /* FTL_L2P_CACHE_H */
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