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bdev/nvme: set bdev write cache flag according to NVMe capability

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Change-Id: Iad307b0d1883d00b2e68bbdfaa94f05955a8314d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Changpeng Liu 2016-11-18 11:23:22 +08:00 committed by Daniel Verkamp
parent 44e60dc47d
commit c8ce161852
1 changed files with 6 additions and 1 deletions
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7
lib/bdev/nvme/blockdev_nvme.c
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@ -594,7 +594,12 @@ nvme_ctrlr_initialize_blockdevs(struct spdk_nvme_ctrlr *ctrlr, int bdev_per_ns,
bdev->disk.max_unmap_bdesc_count =
NVME_DEFAULT_MAX_UNMAP_BDESC_COUNT;
}
bdev->disk.write_cache = 1;
bdev->disk.write_cache = 0;
if (cdata->vwc.present) {
/* Enable if the Volatile Write Cache exists */
bdev->disk.write_cache = 1;
}
bdev->blocklen = spdk_nvme_ns_get_sector_size(ns);
bdev->disk.blocklen = bdev->blocklen;
bdev->disk.blockcnt = bdev->lba_end - bdev->lba_start + 1;