s390/dasd: Add 'timeout' attribute
This patch adds a 'timeout' attibute to the DASD driver.
When set to non-zero, the blk_timeout function will
be enabled with the timeout specified in the attribute.
Setting 'timeout' to '0' will disable block timeouts.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index ad42075..2bd03f4 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -470,6 +470,8 @@
unsigned long default_expires;
unsigned long default_retries;
+ unsigned long blk_timeout;
+
struct dentry *debugfs_dentry;
struct dasd_profile profile;
};
@@ -663,6 +665,8 @@
struct dasd_block *dasd_alloc_block(void);
void dasd_free_block(struct dasd_block *);
+enum blk_eh_timer_return dasd_times_out(struct request *req);
+
void dasd_enable_device(struct dasd_device *);
void dasd_set_target_state(struct dasd_device *, int);
void dasd_kick_device(struct dasd_device *);