linux-kernel - Re: [PATCH 002/109] kernel: use kernel_wait4() instead of sys

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Message-ID: <20180402161429.GS30543@wotan.suse.de>
Date:   Mon, 2 Apr 2018 16:14:29 +0000
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Dominik Brodowski <linux@...inikbrodowski.net>
Cc:     linux-kernel@...r.kernel.org, viro@...IV.linux.org.uk,
        torvalds@...ux-foundation.org, arnd@...db.de,
        linux-arch@...r.kernel.org,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 002/109] kernel: use kernel_wait4() instead of sys_wait4()

On Thu, Mar 29, 2018 at 01:22:39PM +0200, Dominik Brodowski wrote:
> All call sites of sys_wait4() set *rusage to NULL. Therefore, there is
> no need for the copy_to_user() handling of *rusage, and we can use
> kernel_wait4() directly.
> 
> This patch is part of a series which removes in-kernel calls to syscalls.
> On this basis, the syscall entry path can be streamlined. For details, see
> http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
> 
> Cc: Luis R. Rodriguez <mcgrof@...nel.org>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>

Acked-by: Luis R. Rodriguez <mcgrof@...nel.org>

  Luis