Re: [PATCH] mm/page_alloc: Wait for oom_lock before retrying.
From: Sergey Senozhatsky
Date: Fri Jan 13 2017 - 06:51:16 EST
On (01/13/17 12:03), Petr Mladek wrote:
[..]
> > why can't we?
>
> Because it would newer call cond_resched() in non-preemptive kernel
> with CONFIG_PREEMPT_COUNT disabled. IMHO, we want to call it,
> for example, when we scroll the entire screen from tty_operations.
>
> Or do I miss anything?
so... basically. it has never called cond_resched() there. right?
why is this suddenly a problem now?
-ss