Re: CRASH 2.5.70

[Jens Axboe (axboe@suse.de)]

On Wed, May 28 2003, Ian Molton wrote:
> On Wed, 28 May 2003 23:44:22 +0100
> Ian Molton <spyro@xxxxxxx> wrote:
> 
> > I dont overclock this box, and it ran 2.4.<n> stably for months.
> > 
> > AthlonXP1800 on an Asus A7M266 with 256MB DDR memory.
> 
> addendum: ext3 filesystem on WD 120GB disc with 8M cache.

Does this make any difference...?

--- drivers/block/deadline-iosched.c~	2003-05-28 10:46:38.678240272 +0200
+++ drivers/block/deadline-iosched.c	2003-05-28 10:43:13.994356952 +0200
@@ -121,6 +121,15 @@
 		__deadline_del_drq_hash(drq);
 }
 
+static void
+deadline_remove_merge_hints(request_queue_t *q, struct deadline_rq *drq)
+{
+	deadline_del_drq_hash(drq);
+
+	if (q->last_merge == &drq->request->queuelist)
+		q->last_merge = NULL;
+}
+
 static inline void
 deadline_add_drq_hash(struct deadline_data *dd, struct deadline_rq *drq)
 {
@@ -310,7 +319,7 @@
 		struct deadline_data *dd = q->elevator.elevator_data;
 
 		list_del_init(&drq->fifo);
-		deadline_del_drq_hash(drq);
+		deadline_remove_merge_hints(q, drq);
 		deadline_del_drq_rb(dd, drq);
 	}
 }

-- 
Jens Axboe

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