Re: [RFC]: mm,power: introduce MADV_WIPEONSUSPEND

Michal Hocko
2020-07-03T11:30:31Z

On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> This patch adds logic to the kernel power code to zero out contents of
> all MADV_WIPEONSUSPEND VMAs present in the system during its transition
> to any suspend state equal or greater/deeper than Suspend-to-memory,
> known as S3.

How does the application learn that its memory got wiped? S2disk is an
async operation and it can happen at any time during the task execution.
So how does the application work to prevent from corrupted state - e.g.
when suspended between two memory loads?
--
Michal Hocko
SUSE Labs