Re: [PATCH 0/3] exec: Transform exec_update_mutex into a rw_semaphore

[Linus Torvalds]

On Thu, Dec 3, 2020 at 12:10 PM Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote:
>
> The simplest and most robust solution appears to be making
> exec_update_mutex a read/write lock and having everything execept for
> exec take the lock for read.

Looks sane to me.

I'd like the locking people to look at the down_read_*() functions,
even if they look simple. Adding Waiman and Davidlohr to the cc just
in case they would look at that too, since they've worked on that
code.

            Linus