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bdev/raid0: Factor out block count calculation of raid0 bdev

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Factor out block count calculation of raid0 bdev into a helper
function raid0_calculate_blockcnt(). This helper function will be used
to support resize in the following patches.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Ie99d8686897f1249f48ef8985cb1c8347028fccf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16283
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Shuhei Matsumoto 2023-01-13 10:47:57 +09:00 committed by Tomasz Zawadzki
parent c9224e267d
commit 723b1c5021
1 changed files with 11 additions and 4 deletions
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15
module/bdev/raid/raid0.c
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@ -344,8 +344,8 @@ raid0_submit_null_payload_request(struct raid_bdev_io *raid_io)
}
}
static int
raid0_start(struct raid_bdev *raid_bdev)
static uint64_t
raid0_calculate_blockcnt(struct raid_bdev *raid_bdev)
{
uint64_t min_blockcnt = UINT64_MAX;
struct raid_base_bdev_info *base_info;
@ -362,8 +362,15 @@ raid0_start(struct raid_bdev *raid_bdev)
*/
SPDK_DEBUGLOG(bdev_raid0, "min blockcount %" PRIu64 ", numbasedev %u, strip size shift %u\n",
min_blockcnt, raid_bdev->num_base_bdevs, raid_bdev->strip_size_shift);
raid_bdev->bdev.blockcnt = ((min_blockcnt >> raid_bdev->strip_size_shift) <<
raid_bdev->strip_size_shift) * raid_bdev->num_base_bdevs;
return ((min_blockcnt >> raid_bdev->strip_size_shift) <<
raid_bdev->strip_size_shift) * raid_bdev->num_base_bdevs;
}
static int
raid0_start(struct raid_bdev *raid_bdev)
{
raid_bdev->bdev.blockcnt = raid0_calculate_blockcnt(raid_bdev);
if (raid_bdev->num_base_bdevs > 1) {
raid_bdev->bdev.optimal_io_boundary = raid_bdev->strip_size;