Linux-man Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH] move_pages.2: remove ENOENT from the list of possible return values
@ 2019-12-19  5:13 John Hubbard
  2019-12-30 18:55 ` Michael Kerrisk (man-pages)
  0 siblings, 1 reply; 2+ messages in thread
From: John Hubbard @ 2019-12-19  5:13 UTC (permalink / raw)
  To: Michael Kerrisk
  Cc: linux-man, Andrew Morton, Christopher Lameter, linux-api, LKML,
	linux-mm, John Hubbard, Michal Hocko, Brice Goglin, Yang Shi

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@suse.com>
Cc: Brice Goglin <Brice.Goglin@inria.fr>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.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,
John Hubbard
NVIDIA

 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
-- 
2.24.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] move_pages.2: remove ENOENT from the list of possible return values
  2019-12-19  5:13 [PATCH] move_pages.2: remove ENOENT from the list of possible return values John Hubbard
@ 2019-12-30 18:55 ` Michael Kerrisk (man-pages)
  0 siblings, 0 replies; 2+ messages in thread
From: Michael Kerrisk (man-pages) @ 2019-12-30 18:55 UTC (permalink / raw)
  To: John Hubbard
  Cc: mtk.manpages, linux-man, Andrew Morton, Christopher Lameter,
	linux-api, LKML, linux-mm, Michal Hocko, Brice Goglin, Yang Shi

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@suse.com>
> Cc: Brice Goglin <Brice.Goglin@inria.fr>
> Cc: Yang Shi <yang.shi@linux.alibaba.com>
> Cc: Christoph Lameter <cl@linux.com>
> Signed-off-by: John Hubbard <jhubbard@nvidia.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/

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, back to index

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-19  5:13 [PATCH] move_pages.2: remove ENOENT from the list of possible return values John Hubbard
2019-12-30 18:55 ` Michael Kerrisk (man-pages)

Linux-man Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-man/0 linux-man/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-man linux-man/ https://lore.kernel.org/linux-man \
		linux-man@vger.kernel.org
	public-inbox-index linux-man

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-man


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git