[PATCH] cciss: direct lookup for command completions

This patch changes the way we complete commands.  In the old method when we
got a completion we searched our command list from the top until we find it.

This method uses a tag associated with each command (not SCSI command tagging)
to index us directly to the completed command.  This helps performance.

Signed-off-by: Don Brace <dab@hp.com>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index dec27a961120..ef277baee9fd 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -101,6 +101,7 @@ struct ctlr_info
 #ifdef CONFIG_CISS_SCSI_TAPE
         void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
 #endif
+        unsigned char alive;
 };
 
 /*  Defining the diffent access_menthods */