On Fri, Aug 28, 2020 at 07:40:08PM +0200, Arnd Bergmann wrote:
> Every syscall that passes an iovec seems to do this. If we make import_iovec()
> handle both cases directly, this syscall and a number of others can
> be simplified, and you avoid the x32 entry point I mentioned above
FYI, I do have
On Fri, Aug 28, 2020 at 9:27 PM Jens Axboe wrote:
> On 8/28/20 12:24 PM, Jens Axboe wrote:
> >> @@ -1683,8 +1683,13 @@ ssize_t import_iovec(int type, const struct
> >> iovec __user * uvector,
> >> {
> >> ssize_t n;
> >> struct iovec *p;
> >> - n =
On 8/28/20 12:24 PM, Jens Axboe wrote:
> On 8/28/20 11:40 AM, Arnd Bergmann wrote:
>> On Mon, Jun 22, 2020 at 9:29 PM Minchan Kim wrote:
>>> So finally, the API is as follows,
>>>
>>> ssize_t process_madvise(int pidfd, const struct iovec *iovec,
>>>unsigned long vlen, int
On Fri, Aug 28, 2020 at 08:25:34PM +0200, Christian Brauner wrote:
> On Fri, Aug 28, 2020 at 8:24 PM Jens Axboe wrote:
> >
> > On 8/28/20 11:40 AM, Arnd Bergmann wrote:
> > > On Mon, Jun 22, 2020 at 9:29 PM Minchan Kim wrote:
> > >> So finally, the API is as follows,
> > >>
> > >> ssize_t
On Fri, Aug 28, 2020 at 8:24 PM Jens Axboe wrote:
>
> On 8/28/20 11:40 AM, Arnd Bergmann wrote:
> > On Mon, Jun 22, 2020 at 9:29 PM Minchan Kim wrote:
> >> So finally, the API is as follows,
> >>
> >> ssize_t process_madvise(int pidfd, const struct iovec *iovec,
> >>unsigned
On 8/28/20 11:40 AM, Arnd Bergmann wrote:
> On Mon, Jun 22, 2020 at 9:29 PM Minchan Kim wrote:
>> So finally, the API is as follows,
>>
>> ssize_t process_madvise(int pidfd, const struct iovec *iovec,
>>unsigned long vlen, int advice, unsigned int flags);
>
> I had not
On Mon, Jun 22, 2020 at 9:29 PM Minchan Kim wrote:
> So finally, the API is as follows,
>
> ssize_t process_madvise(int pidfd, const struct iovec *iovec,
>unsigned long vlen, int advice, unsigned int flags);
I had not followed the discussion earlier and only now came across
On Wed, Jun 24, 2020 at 01:00:14PM -0700, David Rientjes wrote:
> On Mon, 22 Jun 2020, Minchan Kim wrote:
>
> > diff --git a/mm/madvise.c b/mm/madvise.c
> > index 551ed816eefe..23abca3f93fa 100644
> > --- a/mm/madvise.c
> > +++ b/mm/madvise.c
> > @@ -17,6 +17,7 @@
> > #include
> > #include
>
On Mon, 22 Jun 2020, Minchan Kim wrote:
> diff --git a/mm/madvise.c b/mm/madvise.c
> index 551ed816eefe..23abca3f93fa 100644
> --- a/mm/madvise.c
> +++ b/mm/madvise.c
> @@ -17,6 +17,7 @@
> #include
> #include
> #include
> +#include
> #include
> #include
> #include
> @@ -995,6 +996,18
There is usecase that System Management Software(SMS) want to give a
memory hint like MADV_[COLD|PAGEEOUT] to other processes and in the
case of Android, it is the ActivityManagerService.
The information required to make the reclaim decision is not known to
the app. Instead, it is known to the
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