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Date: Mon, 10 Feb 2020 09:46:26 -0800
From: Linus Torvalds <>
To: Alexey Gladkov <>
Cc: LKML <>, 
	Kernel Hardening <>, Linux API <>, 
	Linux FS Devel <>, 
	Linux Security Module <>, 
	Akinobu Mita <>, Alexander Viro <>, 
	Alexey Dobriyan <>, Andrew Morton <>, 
	Andy Lutomirski <>, Daniel Micay <>, 
	Djalal Harouni <>, "Dmitry V . Levin" <>, 
	"Eric W . Biederman" <>, Greg Kroah-Hartman <>, 
	Ingo Molnar <>, "J . Bruce Fields" <>, 
	Jeff Layton <>, Jonathan Corbet <>, 
	Kees Cook <>, Oleg Nesterov <>, 
	Solar Designer <>
Subject: Re: [PATCH v8 07/11] proc: flush task dcache entries from all procfs instances

On Mon, Feb 10, 2020 at 7:06 AM Alexey Gladkov <> wrote:
> This allows to flush dcache entries of a task on multiple procfs mounts
> per pid namespace.
> The RCU lock is used because the number of reads at the task exit time
> is much larger than the number of procfs mounts.

Ok, this looks better to me than the previous version.

But that may be the "pee-in-the-snow" effect, and I _really_ want
others to take a good look at the whole series.

The right people seem to be cc'd, but this is pretty core, and /proc
has a tendency to cause interesting issues because of how it's
involved in a lot of areas indirectly.

Al, Oleg, Andy, Eric?


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