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| author | Stefan Haberland <sth@linux.ibm.com> | 2023-04-05 17:20:15 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-12 04:53:08 +0300 |
| commit | 0c1a14748133024a33aa8ffd763ca7f5c03bb27e (patch) | |
| tree | 76666233f6929d663bb53945c1211087993f9819 /drivers/s390/block/dasd_int.h | |
| parent | bdac94e29564bab9f24c2700f16ff11f31af7c11 (diff) | |
| download | linux-0c1a14748133024a33aa8ffd763ca7f5c03bb27e.tar.xz | |
s390/dasd: add aq_timeouts autoquiesce trigger
Add a sysfs attribute aq_timeouts that controls after how many
timeouts a autoquiesce event might be triggered.
The default value is 32768 which is the maximum number of retries
for the DASD device driver DASD_RETRIES_MAX. This means that the
timeout trigger will never happen.
The default value for DASD retries is 255.
Setting the value to below 255 will trigger the timeout autoquiesce
event before an IO error is generated.
Also add the check for the configured amount of timeouts and trigger
an autoquiesce event if exceeded.
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Link: https://lore.kernel.org/r/20230405142017.2446986-6-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index c4633a4aeeb1..33f812f0e515 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -638,6 +638,7 @@ struct dasd_device { struct kset *paths_info; struct dasd_copy_relation *copy; unsigned long aq_mask; + unsigned int aq_timeouts; }; struct dasd_block { |