Hi Mel,
Kautuk Consul <consul.kautuk <at> gmail.com> writes:
>
> Ok, I analyzed the code and it seems that this alignment problem has
> been solved by the changes made
> to the free_unused_memmap() code in arch/arm/mm/init.c.
>
> I backported those changes to free_unused_memmap_node() in
> linux-2.6.35.9 and I don't see any more
> crashes. This solves my problem.
>
> Thanks for all the help.
As per the email below, you might remember that I found a temporary
solution by back-porting the free_unused_memmap_node() function in the
arch/arm code.
The original issue was a crash in the move_freepages() function.
The crash was happening because the pageblock pages was partially
within one memory bank.
Can we solve this issue by modifying the check in move_freepages_block()
in the following manner:
if (end_pfn >= zone->zone_start_pfn + zone->spanned_pages ||
!PageBuddy(end_page))
return 0;
This should take care of the crash situation as we will return 0 if
the end_page is lying outside a valid memory bank.
Do you agree with this change ?
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>