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authorKeith Busch <keith.busch@intel.com>2014-04-29 11:41:28 -0600
committerMatthew Wilcox <matthew.r.wilcox@intel.com>2014-05-05 10:53:53 -0400
commita7d2ce2832d84e0182585f63bf96ca7323b3aee7 (patch)
tree2de094a28cc9eae1056f83c7083ea621b021b943 /include
parent3291fa57cb1b004c1a4823beb28b5cc72555f1a5 (diff)
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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 'include')
-rw-r--r--include/linux/nvme.h1
-rw-r--r--include/uapi/linux/nvme.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index cfd084cab22b..6266373d3147 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -99,6 +99,7 @@ struct nvme_dev {
u32 stripe_size;
u16 oncs;
u16 abort_limit;
+ u8 vwc;
u8 initialized;
};
diff --git a/include/uapi/linux/nvme.h b/include/uapi/linux/nvme.h
index ad9014e49693..f090336d5bad 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -73,6 +73,7 @@ enum {
NVME_CTRL_ONCS_COMPARE = 1 << 0,
NVME_CTRL_ONCS_WRITE_UNCORRECTABLE = 1 << 1,
NVME_CTRL_ONCS_DSM = 1 << 2,
+ NVME_CTRL_VWC_PRESENT = 1 << 0,
};
struct nvme_lbaf {