On Sat, 1 Apr 2000, Manfred Spraul wrote:
>From: "Andrea Arcangeli" <[EMAIL PROTECTED]>
>>
>> And the previous one (as said in earlier email) made no sense since 16:06
>> should be the sixth gscd and you said you don't have such device even
>> compiled into the kernel.
>>
>Perhaps the debug code should hexdump the complete req pointer (+- 256
>bytes)?
This debugging patch should do the trick:
--- debug/drivers/block/elevator.c.~1~ Wed Mar 15 16:45:10 2000
+++ debug/drivers/block/elevator.c Sat Apr 1 17:14:52 2000
@@ -57,9 +57,6 @@
struct list_head * entry = &q->queue_head;
static int counter;
- if (counter++ % 100)
- return;
-
while ((entry = entry->prev) != &q->queue_head)
{
struct request * req;
@@ -74,6 +71,13 @@
printk(KERN_WARNING
"%s: elevator req->q NULL req->nr_segments
%u\n",
kdevname(dev), req->nr_segments);
+ {
+ unsigned long * x = (unsigned long *) req;
+ int i;
+
+ for (i = 0; i < 100; i++)
+ printk("elevator req dump %02d: %08lx\n", i,
+*(x++));
+ }
continue;
}
if (req->cmd == READ)
Andrea
