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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2012-11-28 13:43:38 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-11-30 15:40:44 +0100 |
| commit | d07dc5d8ab6f15353c866e2768c389abdc1faba6 (patch) | |
| tree | 9ecf558a0e3d128534b56200b0f411aab315fc0f /drivers/s390/block/dasd_int.h | |
| parent | s390/dasd: fix unaccessible device after resume (diff) | |
| download | linux-d07dc5d8ab6f15353c866e2768c389abdc1faba6.tar.xz linux-d07dc5d8ab6f15353c866e2768c389abdc1faba6.zip | |
s390/dasd: add safe offline interface
The regular behavior of the DASD device driver when setting a device
offline is to return all outstanding I/O as failed. This behavior is
different from that of other System z operating systems and may lead
to unexpected data loss. Adding an explicit 'safe' offline function
will allow customers to use DASDs in the way they expect them to work.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 7ff93eea673d..899e3f5a56e5 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -516,6 +516,8 @@ struct dasd_block { #define DASD_FLAG_IS_RESERVED 7 /* The device is reserved */ #define DASD_FLAG_LOCK_STOLEN 8 /* The device lock was stolen */ #define DASD_FLAG_SUSPENDED 9 /* The device was suspended */ +#define DASD_FLAG_SAFE_OFFLINE 10 /* safe offline processing requested*/ +#define DASD_FLAG_SAFE_OFFLINE_RUNNING 11 /* safe offline running */ void dasd_put_device_wake(struct dasd_device *); |