From: "Javier González" <jg@lightnvm.io>
To: mb@lightnvm.io
Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
"Javier González" <javier@cnexlabs.com>
Subject: [PATCH] lightnvm: introduce ADDR_PADDED to signal padding
Date: Tue, 26 Apr 2016 16:35:16 +0200 [thread overview]
Message-ID: <1461681318-29571-1-git-send-email-javier@javigon.com> (raw)
When REQ_FUA or REQ_FLUSH are sent from the block layer, a target might
need to pad some sectors in order to meet device constrains. ADDR_PADDED
allows to signal that such sector has been padded. It can be used to
mark both lbas and ppas.
Signed-off-by: Javier González <javier@cnexlabs.com>
---
include/linux/lightnvm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 37cda94..5c48207 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -214,6 +214,7 @@ struct nvm_tgt_instance {
};
#define ADDR_EMPTY (~0ULL)
+#define ADDR_PADDED (~0ULL - 1)
#define NVM_VERSION_MAJOR 1
#define NVM_VERSION_MINOR 0
--
2.5.0
next reply other threads:[~2016-04-26 14:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-26 14:35 Javier González [this message]
2016-04-26 14:35 ` [PATCH 2/2] lightnvm: enable metadata to be sent to device Javier González
2016-04-26 14:35 ` [PATCH 1/2] lightnvm: free metadata dma on rrpc when needed Javier González
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