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From: Cyril Hrubis <chrubis-AlSwsSmVLrQ@public.gmane.org>
To: John Hubbard <jhubbard-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Michael Kerrisk
	<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-man <linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Jann Horn <jannh-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	Matthew Wilcox <willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH v2] mmap.2: MAP_FIXED updated documentation
Date: Wed, 6 Dec 2017 11:01:18 +0100	[thread overview]
Message-ID: <20171206100118.GA13979@rei> (raw)
In-Reply-To: <2cff594a-b481-269d-dd91-ff2cc2f4100a-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

Hi!
> (It does seem unfortunate that the man page cannot help the programmer
> actually write correct code here. He or she is forced to read the kernel
> implementation, in order to figure out the true alignment rules. I was
> hoping we could avoid that.)

It would be nice if we had this information exported somehere so that we
do not have to rely on per-architecture ifdefs.

What about adding MapAligment or something similar to the /proc/meminfo?

-- 
Cyril Hrubis
chrubis-AlSwsSmVLrQ@public.gmane.org

  parent reply	other threads:[~2017-12-06 10:01 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-04  2:14 [PATCH v2] mmap.2: MAP_FIXED updated documentation john.hubbard
     [not found] ` <20171204021411.4786-1-jhubbard-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-12-04 10:55   ` Cyril Hrubis
2017-12-05  2:14     ` John Hubbard
     [not found]       ` <efb6eae4-7f30-42c3-0efe-0ab5fbf0fdb4-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-12-05  7:05         ` Michal Hocko
2017-12-05  7:42           ` John Hubbard
2017-12-05  8:52             ` Michal Hocko
     [not found]             ` <2cff594a-b481-269d-dd91-ff2cc2f4100a-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-12-06 10:01               ` Cyril Hrubis [this message]
2017-12-06 21:21                 ` John Hubbard
2017-12-07 12:58                   ` Cyril Hrubis
2017-12-07 14:02                     ` Michal Hocko
2017-12-09 17:19                       ` Pavel Machek
2017-12-10  7:44                         ` John Hubbard
2017-12-04 11:31   ` Mike Rapoport
2017-12-05  2:52     ` John Hubbard
     [not found]       ` <6777116d-ad9e-48c9-0009-01d10274135e-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-12-05  7:08         ` Michal Hocko
2017-12-05  7:43           ` John Hubbard

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