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| author | Keith Busch <keith.busch@intel.com> | 2014-04-29 11:41:28 -0600 |
|---|---|---|
| committer | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2014-05-05 10:53:53 -0400 |
| commit | a7d2ce2832d84e0182585f63bf96ca7323b3aee7 (patch) | |
| tree | 2de094a28cc9eae1056f83c7083ea621b021b943 /drivers/block | |
| parent | 3291fa57cb1b004c1a4823beb28b5cc72555f1a5 (diff) | |
| download | linux-a7d2ce2832d84e0182585f63bf96ca7323b3aee7.tar.gz linux-a7d2ce2832d84e0182585f63bf96ca7323b3aee7.tar.bz2 linux-a7d2ce2832d84e0182585f63bf96ca7323b3aee7.zip | |
NVMe: Configure support for block flush
This configures an nvme request_queue as flush capable if the device
has a volatile write cache present.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nvme-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 025dd4cad4a6..e7c4fdb6a651 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1897,6 +1897,8 @@ static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid, blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift); if (dev->max_hw_sectors) blk_queue_max_hw_sectors(ns->queue, dev->max_hw_sectors); + if (dev->vwc & NVME_CTRL_VWC_PRESENT) + blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA); disk->major = nvme_major; disk->first_minor = 0; @@ -2201,6 +2203,7 @@ static int nvme_dev_add(struct nvme_dev *dev) nn = le32_to_cpup(&ctrl->nn); dev->oncs = le16_to_cpup(&ctrl->oncs); dev->abort_limit = ctrl->acl + 1; + dev->vwc = ctrl->vwc; memcpy(dev->serial, ctrl->sn, sizeof(ctrl->sn)); memcpy(dev->model, ctrl->mn, sizeof(ctrl->mn)); memcpy(dev->firmware_rev, ctrl->fr, sizeof(ctrl->fr)); |