Re: [PATCH] mm: hugetlb: add might_sleep() for gigantic page
From: Michal Hocko
Date: Tue Dec 27 2011 - 08:39:56 EST
On Tue 27-12-11 21:38:59, Hillf Danton wrote:
> On Tue, Dec 27, 2011 at 9:30 PM, Michal Hocko <mhocko@xxxxxxx> wrote:
> > On Tue 27-12-11 21:21:18, Hillf Danton wrote:
> >> On Tue, Dec 27, 2011 at 8:59 PM, Michal Hocko <mhocko@xxxxxxx> wrote:
> >> > On Fri 23-12-11 21:41:08, Hillf Danton wrote:
> >> >> From: Hillf Danton <dhillf@xxxxxxxxx>
> >> >> Subject: [PATCH] mm: hugetlb: add might_sleep() for gigantic page
> >> >>
> >> >> Like the case of huge page, might_sleep() is added for gigantic page, then
> >> >> both are treated in same way.
> >> >
> >> > Why do we need to call might_sleep here? There is cond_resched in the
> >> > loop...
> >> >
> >> IIUC it is the reason to add... and the comment says
> > cond_resched calls __might_sleep so there is no reason to call
> > might_sleep outside the loop as well.
> Yes, thanks. And remove it in the huge page case?
Yes, makes sense.
SUSE LINUX s.r.o.
190 00 Praha 9
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/