block: unify request timeout handling
Right now SCSI and others do their own command timeout handling.
Move those bits to the block layer.
Instead of having a timer per command, we try to be a bit more clever
and simply have one per-queue. This avoids the overhead of having to
tear down and setup a timer for each command, so it will result in a lot
less timer fiddling.
Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 44a55d1..d123ca8 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -43,13 +43,6 @@
#define DISABLE_CLUSTERING 0
#define ENABLE_CLUSTERING 1
-enum scsi_eh_timer_return {
- EH_NOT_HANDLED,
- EH_HANDLED,
- EH_RESET_TIMER,
-};
-
-
struct scsi_host_template {
struct module *module;
const char *name;
@@ -347,7 +340,7 @@
*
* Status: OPTIONAL
*/
- enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
+ enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *);
/*
* Name of proc directory
