Re: [PATCH RFC] mm: Add an fs-write seal to memfd

[Andrew Morton]

On Fri,  5 Oct 2018 12:27:27 -0700 "Joel Fernandes (Google)" <joel@xxxxxxxxxxxxxxxxx> wrote:

> To support the usecase, this patch adds a new F_SEAL_FS_WRITE seal which
> prevents any future mmap and write syscalls from succeeding while
> keeping the existing mmap active. The following program shows the seal
> working in action:

Please be prepared to create a manpage patch for this one.