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| author |   Stefan Weinhuber <wein@de.ibm.com> | 2011-01-05 12:48:04 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:30 +0100 |
| commit | 5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b (patch) | |
| tree | 20595cba0caebf7a8a5f0afac9785c7d717f3e8c /drivers/s390/block/dasd_eer.c | |
| parent | [S390] dasd: do path verification for paths added at runtime (diff) | |
| download | linux-dev-5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b.tar.xz linux-dev-5a27e60dec59a95bd7f8ae9a19ae2ede4f76395b.zip | |
[S390] dasd: Improve handling of stolen DASD reservation
If a DASD device has been reserved by a Linux system, and later
this reservation is ‘stolen’ by a second system by means of an
unconditional reserve, then the first system receives a
notification about this fact. With this patch such an event can
be either ignored, as before, or it can be used to let the device
fail all I/O request, so that the device will not block anymore.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_eer.c')
| -rw-r--r-- | drivers/s390/block/dasd_eer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c index 83b4615a3b62..77f778b7b070 100644 --- a/drivers/s390/block/dasd_eer.c +++ b/drivers/s390/block/dasd_eer.c @@ -473,6 +473,7 @@ int dasd_eer_enable(struct dasd_device *device) cqr->retries = 255; cqr->expires = 10 * HZ; clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); + set_bit(DASD_CQR_ALLOW_SLOCK, &cqr->flags); ccw = cqr->cpaddr; ccw->cmd_code = DASD_ECKD_CCW_SNSS; |