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Message-ID: <56530a26-e5b4-1441-521b-8dc6580f90c7@gmail.com>
Date: Mon, 30 Dec 2019 19:55:00 +0100
From: "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To: John Hubbard <jhubbard@...dia.com>
Cc: mtk.manpages@...il.com, linux-man@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Christopher Lameter <cl@...ux.com>, linux-api@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
Michal Hocko <mhocko@...e.com>,
Brice Goglin <Brice.Goglin@...ia.fr>,
Yang Shi <yang.shi@...ux.alibaba.com>
Subject: Re: [PATCH] move_pages.2: remove ENOENT from the list of possible
return values
Hello John,
On 12/19/19 6:13 AM, John Hubbard wrote:
> Linux kernel commit e78bbfa82624 ("mm: stop returning -ENOENT from
> sys_move_pages() if nothing got migrated") had the effect of *never*
> returning -ENOENT, in any situation. So we need to update the man page
> to reflect that ENOENT is not a possible return value.
>
> Acked-by: Michal Hocko <mhocko@...e.com>
> Cc: Brice Goglin <Brice.Goglin@...ia.fr>
> Cc: Yang Shi <yang.shi@...ux.alibaba.com>
> Cc: Christoph Lameter <cl@...ux.com>
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
> ---
>
> Hi,
>
> This fix for the man page was ACK'd by Michal, here:
>
> https://lore.kernel.org/r/20191218101711.GB21485@dhcp22.suse.cz
Thanks. Patch applied.
Cheers,
Michael
> man2/move_pages.2 | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/man2/move_pages.2 b/man2/move_pages.2
> index 2d96468fa..1bf1053f2 100644
> --- a/man2/move_pages.2
> +++ b/man2/move_pages.2
> @@ -191,12 +191,6 @@ was specified or an attempt was made to migrate pages of a kernel thread.
> .B ENODEV
> One of the target nodes is not online.
> .TP
> -.B ENOENT
> -No pages were found that require moving.
> -All pages are either already
> -on the target node, not present, had an invalid address or could not be
> -moved because they were mapped by multiple processes.
> -.TP
> .B EPERM
> The caller specified
> .B MPOL_MF_MOVE_ALL
>
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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