On 11/25/2018 07:29 PM, Hugh Dickins wrote:
>>Does somebody still have access to the customer load that triggered
>> the horrible scaling issues before?
>
> Kan? Tim?
>
We don't have access to the workload know. Will ask the customer to
see if they can test it.
Thanks.
Tim
On Sun, 25 Nov 2018, Linus Torvalds wrote:
> On Sat, Nov 24, 2018 at 7:21 PM Hugh Dickins wrote:
> >
> > Linus, I'm addressing this patch to you because I see from Tim Chen's
> > thread that it would interest you, and you were disappointed not to
> > root cause the issue back then. I'm not pushin
On Sat, Nov 24, 2018 at 7:21 PM Hugh Dickins wrote:
>
> Linus, I'm addressing this patch to you because I see from Tim Chen's
> thread that it would interest you, and you were disappointed not to
> root cause the issue back then. I'm not pushing for you to fast-track
> this into 4.20-rc, but I ex
On Sat, Nov 24, 2018 at 07:21:07PM -0800, Hugh Dickins wrote:
> Waiting on a page migration entry has used wait_on_page_locked() all
> along since 2006: but you cannot safely wait_on_page_locked() without
> holding a reference to the page, and that extra reference is enough to
> make migrate_page_m
Waiting on a page migration entry has used wait_on_page_locked() all
along since 2006: but you cannot safely wait_on_page_locked() without
holding a reference to the page, and that extra reference is enough to
make migrate_page_move_mapping() fail with -EAGAIN, when a racing task
faults on the entr
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