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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-12-04 15:41:01 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-12-04 15:41:01 +0100 |
| commit | 24cb5b4846ebae5543869b5c596c2650f380df53 (patch) | |
| tree | fd45cf7fab0a065c7529c5811e3258a66e877095 /drivers/s390/cio/css.h | |
| parent | 9163bb2e556f6c7879961df94540f0879db4717b (diff) | |
| download | kernel_samsung_smdk4412-24cb5b4846ebae5543869b5c596c2650f380df53.zip kernel_samsung_smdk4412-24cb5b4846ebae5543869b5c596c2650f380df53.tar.gz kernel_samsung_smdk4412-24cb5b4846ebae5543869b5c596c2650f380df53.tar.bz2 | |
[S390] cio: Use path verification for last path gone after vary off.
If the last path to a device is gone after a chpid has been varied
off, putting it on the slow queue doesn't prevent a device driver
from still attempting to use it (it may stay on the slow queue for a
long time). Instead, trigger a verify event which will prevent I/O
attempts from the device driver immediately.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.h')
| -rw-r--r-- | drivers/s390/cio/css.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 4c2ff83..da73453 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -171,6 +171,7 @@ void device_trigger_reprobe(struct subchannel *); /* Helper functions for vary on/off. */ int device_is_online(struct subchannel *); void device_kill_io(struct subchannel *); +int device_trigger_verify(struct subchannel *sch); /* Machine check helper function. */ void device_kill_pending_timer(struct subchannel *); |