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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christian Brauner <christian@brauner.io>,
	Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH v2 0/2] close_range()
Date: Thu, 23 May 2019 14:34:31 -0700	[thread overview]
Message-ID: <CAHk-=wj5YZQ=ox+T1kc4RWp3KP+4VvXzvr8vOBbqcht6cOXufw@mail.gmail.com> (raw)
In-Reply-To: <20190523182152.GA6875@avx2>

On Thu, May 23, 2019 at 11:22 AM Alexey Dobriyan <adobriyan@gmail.com> wrote:
>
> > This is v2 of this patchset.
>
> We've sent fdmap(2) back in the day:

Well, if the main point of the exercise is performance, then fdmap()
is clearly inferior.

Sadly, with all the HW security mitigation, system calls are no longer cheap.

Would there ever be any other reason to traverse unknown open files
than to close them?

                   Linus

  reply	other threads:[~2019-05-23 21:34 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 18:21 Alexey Dobriyan
2019-05-23 21:34 ` Linus Torvalds [this message]
2019-05-24 10:27   ` Christian Brauner
2019-05-24 18:39   ` Alexey Dobriyan
2019-05-24 18:55     ` Linus Torvalds
2019-05-24 21:27       ` Alexey Dobriyan
2019-05-24 23:45         ` Al Viro
  -- strict thread matches above, loose matches on Subject: below --
2019-05-23 15:47 Christian Brauner

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