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>
23 lines
370 B
Plaintext
23 lines
370 B
Plaintext
{
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global:
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# public functions
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spdk_ftl_init;
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spdk_ftl_fini;
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spdk_ftl_dev_init;
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spdk_ftl_dev_free;
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spdk_ftl_get_default_conf;
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spdk_ftl_dev_get_attrs;
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spdk_ftl_dev_get_conf;
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spdk_ftl_conf_copy;
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spdk_ftl_conf_deinit;
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spdk_ftl_get_io_channel;
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spdk_ftl_io_size;
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spdk_ftl_readv;
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spdk_ftl_writev;
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spdk_ftl_unmap;
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spdk_ftl_dev_set_fast_shutdown;
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local: *;
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};
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