488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
87 lines
2.0 KiB
C
87 lines
2.0 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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#include "bdev_raid.h"
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#include "spdk/env.h"
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#include "spdk/thread.h"
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#include "spdk/string.h"
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#include "spdk/util.h"
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#include "spdk/log.h"
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struct raid5_info {
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/* The parent raid bdev */
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struct raid_bdev *raid_bdev;
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/* Number of data blocks in a stripe (without parity) */
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uint64_t stripe_blocks;
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/* Number of stripes on this array */
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uint64_t total_stripes;
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};
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static inline uint8_t
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raid5_stripe_data_chunks_num(const struct raid_bdev *raid_bdev)
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{
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return raid_bdev->num_base_bdevs - raid_bdev->module->base_bdevs_max_degraded;
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}
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static void
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raid5_submit_rw_request(struct raid_bdev_io *raid_io)
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{
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raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
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}
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static int
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raid5_start(struct raid_bdev *raid_bdev)
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{
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uint64_t min_blockcnt = UINT64_MAX;
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struct raid_base_bdev_info *base_info;
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struct raid5_info *r5info;
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r5info = calloc(1, sizeof(*r5info));
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if (!r5info) {
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SPDK_ERRLOG("Failed to allocate r5info\n");
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return -ENOMEM;
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}
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r5info->raid_bdev = raid_bdev;
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RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
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min_blockcnt = spdk_min(min_blockcnt, base_info->bdev->blockcnt);
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}
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r5info->total_stripes = min_blockcnt / raid_bdev->strip_size;
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r5info->stripe_blocks = raid_bdev->strip_size * raid5_stripe_data_chunks_num(raid_bdev);
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raid_bdev->bdev.blockcnt = r5info->stripe_blocks * r5info->total_stripes;
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raid_bdev->bdev.optimal_io_boundary = r5info->stripe_blocks;
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raid_bdev->bdev.split_on_optimal_io_boundary = true;
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raid_bdev->module_private = r5info;
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return 0;
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}
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static void
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raid5_stop(struct raid_bdev *raid_bdev)
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{
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struct raid5_info *r5info = raid_bdev->module_private;
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free(r5info);
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}
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static struct raid_bdev_module g_raid5_module = {
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.level = RAID5,
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.base_bdevs_min = 3,
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.base_bdevs_max_degraded = 1,
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.start = raid5_start,
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.stop = raid5_stop,
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.submit_rw_request = raid5_submit_rw_request,
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};
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RAID_MODULE_REGISTER(&g_raid5_module)
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SPDK_LOG_REGISTER_COMPONENT(bdev_raid5)
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