On 05/01/2019 20:38, Vlastimil Babka wrote:
[...]
> I was thinking about "return true" here, assuming that userspace generally
> wants
> to ensure itself there won't be page faults when it starts doing something
> critical, and if it sees a "false" it will try to do some kind of prefaulting,
> possibly in a loop. There might be somebody trying to make sure something is
> out
Isn't that racy by design as the pages may get flushed out after the check?
Shouldn't the application use e.g. mlock()/.... to guarantee no page
faults in the first place?
MfG,
Bernd
--
Bernd Petrovitsch Email : be...@petrovitsch.priv.at
LUGA : http://www.luga.at
