[PATCH] lightnvm: introduce ADDR_PADDED to signal padding

From	"Javier González" <jg@lightnvm.io>
Newsgroups	linux.kernel
Subject	[PATCH] lightnvm: introduce ADDR_PADDED to signal padding
Date	2016-04-26 16:40 +0200
Message-ID	<rscjD-TC-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View 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

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] lightnvm: introduce ADDR_PADDED to signal padding "Javier González" <jg@lightnvm.io> - 2016-04-26 16:40 +0200
  [PATCH 1/2] lightnvm: free metadata dma on rrpc when needed "Javier González" <jg@lightnvm.io> - 2016-04-26 16:40 +0200
  [PATCH 2/2] lightnvm: enable metadata to be sent to device "Javier González" <jg@lightnvm.io> - 2016-04-26 16:40 +0200

csiph-web