diff mbox

lightnvm: Add error code for bad write pointer

Message ID 1504693358-12702-1-git-send-email-javier@cnexlabs.com (mailing list archive)
State New, archived
Headers show

Commit Message

=?UTF-8?q?Javier=20Gonz=C3=A1lez?= Sept. 6, 2017, 10:22 a.m. UTC
Add new error code introduced on the OCSSD spec 2.0 for write pointer
mismatch on the device side. This indicates to the host that a write on
a block (chunk) is not respecting the required sequentiality.

Signed-off-by: Javier González <javier@cnexlabs.com>
---
 include/linux/lightnvm.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Christoph Hellwig Sept. 6, 2017, 1:44 p.m. UTC | #1
On Wed, Sep 06, 2017 at 12:22:38PM +0200, Javier González wrote:
> Add new error code introduced on the OCSSD spec 2.0 for write pointer
> mismatch on the device side. This indicates to the host that a write on
> a block (chunk) is not respecting the required sequentiality.

Do you have a pointer to that spec?
=?UTF-8?q?Javier=20Gonz=C3=A1lez?= Sept. 6, 2017, 2:44 p.m. UTC | #2
> On 6 Sep 2017, at 15.44, Christoph Hellwig <hch@infradead.org> wrote:
> 
> On Wed, Sep 06, 2017 at 12:22:38PM +0200, Javier González wrote:
>> Add new error code introduced on the OCSSD spec 2.0 for write pointer
>> mismatch on the device side. This indicates to the host that a write on
>> a block (chunk) is not respecting the required sequentiality.
> 
> Do you have a pointer to that spec?

No yet. Still writing it up nicely.

I'll wait to re-post until we have the spec out.

Javier
diff mbox

Patch

diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 7dfa56ebbc6d..81b71c6d5873 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -102,7 +102,8 @@  enum {
 	/* Status codes */
 	NVM_RSP_SUCCESS		= 0x0,
 	NVM_RSP_NOT_CHANGEABLE	= 0x1,
-	NVM_RSP_ERR_FAILWRITE	= 0x40ff,
+	NVM_RSP_ERR_FAILWRITE	= 0x40ff,	/* Generic write failure */
+	NVM_RSP_ERR_FAILWP	= 0x42f0,	/* Write pointer failure */
 	NVM_RSP_ERR_EMPTYPAGE	= 0x42ff,
 	NVM_RSP_ERR_FAILECC	= 0x4281,
 	NVM_RSP_ERR_FAILCRC	= 0x4004,