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SubjectRe: [ANOMALIES]: 2.4.2 - __alloc_pages: failed & mount hanging withloop device issues
Ok apply patch and loop patch... I'll let you know what happens in my next
email.

Mike Galbraith wrote:

> On Fri, 23 Feb 2001, Shawn Starr wrote:
>
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 3-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 3-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 2-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 3-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 3-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 2-order allocation
> > failed.
> > Feb 23 03:31:18 coredump kernel: __alloc_pages: 3-order allocation
> > failed.
> >
> > The use of mkisofs and xcdroster with cdrecord seems to cause this fault
> > in kernel.log
>
> Hi,
>
> Can you try the below for the high order allocation problem? We don't
> try very hard at all to service high order allocations under load. If
> it helps, let me know and I'll submit it to Rik for consideration.
>
> (for loop troubles, you should try Jens' latest loop patch located in
> your favorite kernel mirror under pub/linux/kernel/people/axboe)
>
> -Mike
>
> (patch was done against 2.4.1-ac20, but should go in ok)
> --- mm/page_alloc.c.org Fri Feb 23 13:21:54 2001
> +++ mm/page_alloc.c Fri Feb 23 13:28:33 2001
> @@ -274,7 +274,7 @@
> struct page * __alloc_pages(zonelist_t *zonelist, unsigned long order)
> {
> zone_t **zone;
> - int direct_reclaim = 0;
> + int direct_reclaim = 0, loop = 0;
> unsigned int gfp_mask = zonelist->gfp_mask;
> struct page * page;
>
> @@ -366,7 +366,7 @@
> * able to free some memory we can't free ourselves
> */
> wakeup_kswapd();
> - if (gfp_mask & __GFP_WAIT) {
> + if (gfp_mask & __GFP_WAIT && loop) {
> __set_current_state(TASK_RUNNING);
> current->policy |= SCHED_YIELD;
> schedule();
> @@ -393,6 +393,7 @@
> * --> try to free pages ourselves with page_launder
> */
> if (!(current->flags & PF_MEMALLOC)) {
> + loop++;
> /*
> * Are we dealing with a higher order allocation?
> *
> @@ -440,7 +441,7 @@
> memory_pressure++;
> try_to_free_pages(gfp_mask);
> wakeup_bdflush(0);
> - if (!order)
> + if (!order || loop < (1 << order))
> goto try_again;
> }
> }

-
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