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lightnvm: introduce ADDR_PADDED to signal padding

Message ID 1461681318-29571-1-git-send-email-javier@javigon.com (mailing list archive)
State New, archived
Headers show

Commit Message

=?UTF-8?q?Javier=20Gonz=C3=A1lez?= April 26, 2016, 2:35 p.m. UTC 
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 mbox

Patch

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