* [PATCH] madvise.2: MADV_FREE clarify swapless behavior
@ 2018-11-29 18:10 mhocko
2018-12-01 8:54 ` Michael Kerrisk (man-pages)
0 siblings, 1 reply; 2+ messages in thread
From: mhocko @ 2018-11-29 18:10 UTC (permalink / raw)
To: Michael Kerrisk
Cc: linux-mm, Niklas Hambüchen, Shaohua Li, linux-man, Michal Hocko
From: Michal Hocko <mhocko@suse.com>
Since 93e06c7a6453 ("mm: enable MADV_FREE for swapless system") we
handle MADV_FREE on a swapless system the same way as with the swap
available. Clarify that fact in the man page.
Reported-by: Niklas Hambüchen <mail@nh2.me>
---
man2/madvise.2 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/man2/madvise.2 b/man2/madvise.2
index eb82a57a1cf5..d9135a05a1c2 100644
--- a/man2/madvise.2
+++ b/man2/madvise.2
@@ -403,7 +403,7 @@ The
operation
can be applied only to private anonymous pages (see
.BR mmap (2)).
-On a swapless system, freeing pages in a given range happens instantly,
+Prior to 4.12 on a swapless system, freeing pages in a given range happens instantly,
regardless of memory pressure.
.TP
.BR MADV_WIPEONFORK " (since Linux 4.14)"
--
2.19.1
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] madvise.2: MADV_FREE clarify swapless behavior
2018-11-29 18:10 [PATCH] madvise.2: MADV_FREE clarify swapless behavior mhocko
@ 2018-12-01 8:54 ` Michael Kerrisk (man-pages)
0 siblings, 0 replies; 2+ messages in thread
From: Michael Kerrisk (man-pages) @ 2018-12-01 8:54 UTC (permalink / raw)
To: mhocko
Cc: mtk.manpages, linux-mm, Niklas Hambüchen, Shaohua Li,
linux-man, Michal Hocko
On 11/29/18 7:10 PM, mhocko@kernel.org wrote:
> From: Michal Hocko <mhocko@suse.com>
>
> Since 93e06c7a6453 ("mm: enable MADV_FREE for swapless system") we
> handle MADV_FREE on a swapless system the same way as with the swap
> available. Clarify that fact in the man page.
Thanks, Michal (and Niklas). Patch applied.
Cheers,
Michael
> Reported-by: Niklas Hambüchen <mail@nh2.me>
> ---
> man2/madvise.2 | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/man2/madvise.2 b/man2/madvise.2
> index eb82a57a1cf5..d9135a05a1c2 100644
> --- a/man2/madvise.2
> +++ b/man2/madvise.2
> @@ -403,7 +403,7 @@ The
> operation
> can be applied only to private anonymous pages (see
> .BR mmap (2)).
> -On a swapless system, freeing pages in a given range happens instantly,
> +Prior to 4.12 on a swapless system, freeing pages in a given range happens instantly,
> regardless of memory pressure.
> .TP
> .BR MADV_WIPEONFORK " (since Linux 4.14)"
>
--
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
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2018-11-29 18:10 [PATCH] madvise.2: MADV_FREE clarify swapless behavior mhocko
2018-12-01 8:54 ` Michael Kerrisk (man-pages)
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