linux-kernel - Re: [PATCH v2 1/2] mm/userfaultfd: Support WP on multiple VMAs

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Message-ID: <Y++laOl3OLw7zMPL@x1n>
Date:   Fri, 17 Feb 2023 11:03:52 -0500
From:   Peter Xu <peterx@...hat.com>
To:     Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc:     Paul Gofman <pgofman@...eweavers.com>, david@...hat.com,
        Andrew Morton <akpm@...ux-foundation.org>,
        kernel@...labora.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mm/userfaultfd: Support WP on multiple VMAs

On Fri, Feb 17, 2023 at 03:59:25PM +0500, Muhammad Usama Anjum wrote:
> > But what if the user wants to do that during when you're tracing it using
> > userfaultfd?  Can it happen?
> Sorry, I've not tested tracing.

No worry.  It's not a request to test tracing; it's more or less to make
sure it works for you if it cannot trace a program that uses uffd.  If it's
not a problem to you, then it's not a problem to me either. And it's not
anything special to async but in general to uffd.  Thanks,

-- 
Peter Xu