Re: [PATCH] mm/mmu_notifier: Remove non_block_start/end() from notifier invocation

[Michal Hocko]

On Tue 11-08-26 16:24:48, David Woodhouse wrote:
[...]
> I had a second reason for disabling the overzealous check too: to allow
> SRCU grace periods within the notifier callbacks.

Is there a way that srcu barrier could cause an indirect dependency on
memory allocation? In other words what might block the scru to complete?

-- 
Michal Hocko
SUSE Labs