From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: akpm@osdl.org, horst.hummel@de.ibm.com, linux-kernel@vger.kernel.org
Subject: [patch 7/12] s390: fba dasd i/o errors.
Date: Mon, 11 Jul 2005 18:36:25 +0200 [thread overview]
Message-ID: <20050711163625.GG10822@localhost.localdomain> (raw)
[patch 7/12] s390: fba dasd i/o errors.
From: Horst Hummel <horst.hummel@de.ibm.com>
The FBA discipline does not use retries for failed requests. A request
fails after the first unsuccessful start attempt. There are some rare
conditions (e.g. CIO path recovery) in which the start of an i/o on
a fba device can fail. A tiny amount of retries is therefore
reasonable.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diffstat:
drivers/s390/block/dasd_fba.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff -urpN linux-2.6/drivers/s390/block/dasd_fba.c linux-2.6-patched/drivers/s390/block/dasd_fba.c
--- linux-2.6/drivers/s390/block/dasd_fba.c 2005-06-17 21:48:29.000000000 +0200
+++ linux-2.6-patched/drivers/s390/block/dasd_fba.c 2005-07-11 17:37:46.000000000 +0200
@@ -4,7 +4,7 @@
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
*
- * $Revision: 1.39 $
+ * $Revision: 1.40 $
*/
#include <linux/config.h>
@@ -354,6 +354,8 @@ dasd_fba_build_cp(struct dasd_device * d
}
cqr->device = device;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->retries = 32;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
}
next reply other threads:[~2005-07-11 16:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-11 16:36 Martin Schwidefsky [this message]
2005-07-12 10:22 ` [patch 7/12] s390: fba dasd i/o errors Denis Vlasenko
2005-07-12 10:36 ` Martin Schwidefsky
2005-07-12 12:36 ` Denis Vlasenko
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