On Tue 12-02-19 14:09:03, Jiri Kosina wrote:
> On Tue, 12 Feb 2019, Michal Hocko wrote:
>
> > I would go with patch 1 for 5.1. Patches 2 still sounds controversial or
> > incomplete to me.
>
> Is it because of the disagreement what 'non-blocking' really means, or do
> you see something else mis
On Tue, 12 Feb 2019, Michal Hocko wrote:
> I would go with patch 1 for 5.1. Patches 2 still sounds controversial or
> incomplete to me.
Is it because of the disagreement what 'non-blocking' really means, or do
you see something else missing?
Merging patch just patch 1 withouth patch 2 is proba
On Tue 12-02-19 04:44:30, Jiri Kosina wrote:
> On Fri, 1 Feb 2019, Vlastimil Babka wrote:
>
> > >> After "mm/mincore: make mincore() more conservative" we sometimes
> > >> restrict the
> > >> information about page cache residency, which we have to do without
> > >> breaking
> > >> existing user
On Fri, 1 Feb 2019, Vlastimil Babka wrote:
> >> After "mm/mincore: make mincore() more conservative" we sometimes restrict
> >> the
> >> information about page cache residency, which we have to do without
> >> breaking
> >> existing userspace, if possible. We thus fake the resulting values as 1,
On Fri, 1 Feb 2019, Vlastimil Babka wrote:
> > Well, but rss update will not tell you that the page has been faulted in
> > which is the most interesting part.
>
> Sure, but the patch doesn't add back that capability neither. It allows
> to recognize page being reclaimed, and I argue you can infe
On 2/1/19 10:11 AM, Michal Hocko wrote:
> On Fri 01-02-19 10:04:23, Vlastimil Babka wrote:
>> The side channel exists anyway as long as process can e.g. check if
>> its rss shrinked, and I doubt we are going to remove that possibility.
>
> Well, but rss update will not tell you that the page has b
On Fri 01-02-19 10:04:23, Vlastimil Babka wrote:
> The side channel exists anyway as long as process can e.g. check if
> its rss shrinked, and I doubt we are going to remove that possibility.
Well, but rss update will not tell you that the page has been faulted in
which is the most interesting par
On 1/31/19 11:09 AM, Michal Hocko wrote:
> On Wed 30-01-19 13:44:20, Vlastimil Babka wrote:
>> After "mm/mincore: make mincore() more conservative" we sometimes restrict
>> the
>> information about page cache residency, which we have to do without breaking
>> existing userspace, if possible. We th
On Wed 30-01-19 13:44:20, Vlastimil Babka wrote:
> After "mm/mincore: make mincore() more conservative" we sometimes restrict the
> information about page cache residency, which we have to do without breaking
> existing userspace, if possible. We thus fake the resulting values as 1, which
> should
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