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| author | Horst Hummel <horst.hummel@de.ibm.com> | 2006-01-06 00:19:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:50 -0800 |
| commit | 1c01b8a5963aec60488c1c97d67cffd8b5275e3f (patch) | |
| tree | 48eb6c300541d77ff2cc5d8949ce5788fab1d82f /drivers/s390/block/dasd_fba.c | |
| parent | 9a7af289660dc749d7c58234191601046a9bf488 (diff) | |
| download | op-kernel-dev-1c01b8a5963aec60488c1c97d67cffd8b5275e3f.zip op-kernel-dev-1c01b8a5963aec60488c1c97d67cffd8b5275e3f.tar.gz | |
[PATCH] s390: dasd failfast support
To properly support multipath-failover handling, the linux block layer has
introduced a special request flag, 'REQ_FAILFAST'. This flag is now used to
return requests immediately in case the device is not operational.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390/block/dasd_fba.c')
| -rw-r--r-- | drivers/s390/block/dasd_fba.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index 28cb461..9bac8d8 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -4,7 +4,7 @@ * Bugreports.to..: <Linux390@de.ibm.com> * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 * - * $Revision: 1.40 $ + * $Revision: 1.41 $ */ #include <linux/config.h> @@ -352,6 +352,8 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req) recid++; } } + if (req->flags & REQ_FAILFAST) + set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); cqr->device = device; cqr->expires = 5 * 60 * HZ; /* 5 minutes */ cqr->retries = 32; |
