Re: [PATCH v9 3/3] mm/madvise: introduce process_madvise() syscall: an external memory hinting API

[Minchan Kim]

On Tue, Sep 01, 2020 at 08:46:02PM +0200, Florian Weimer wrote:
> * Minchan Kim:
> 
> >       ssize_t process_madvise(int pidfd, const struct iovec *iovec,
> >                 unsigned long vlen, int advice, unsigned int flags);
> 
> size_t for vlen provides a clearer hint regarding the type of special
> treatment needed for ILP32 here (zero extension, not changing the type
> to long long).
> 

All existing system calls using iove in Linux uses unsigned long so
I want to be consistent with them unless process_madvise need something
speicial.