[PATCH 09/10] UBUNTU: SAUCE: Add definitions for NVME_CTRL_PAGE_(SHIFT|SIZE)

[Khalid Elmously]

BugLink: https://bugs.launchpad.net/bugs/1943902

Those defines were added in mainline
  6c3c05b087ada8947cd31895f67e433070446234

Only the definitions are needed not the whole patch, so I am
including that part as SAUCE

Signed-off-by: Khalid Elmously <khalid.elmously at canonical.com>
---
 drivers/nvme/host/nvme.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 2df90d4355b9a..1c62ec1662f47 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -28,6 +28,16 @@ extern unsigned int admin_timeout;
 #define NVME_DEFAULT_KATO	5
 #define NVME_KATO_GRACE		10
 
+
+/*
+ * Default to a 4K page size, with the intention to update this
+ * path in the future to accommodate architectures with differing
+ * kernel and IO page sizes.
+ */
+#define NVME_CTRL_PAGE_SHIFT   12
+#define NVME_CTRL_PAGE_SIZE    (1 << NVME_CTRL_PAGE_SHIFT)
+
+
 extern struct workqueue_struct *nvme_wq;
 extern struct workqueue_struct *nvme_reset_wq;
 extern struct workqueue_struct *nvme_delete_wq;
-- 
2.17.1