From: Eric B Munson <ebmunson@us.ibm.com>
To: mtk.manpages@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-man@vger.kernel.org
Subject: Re: [PATCH 2/3] Add MAP_LARGEPAGE for mmaping pseudo-anonymous huge page regions
Date: Wed, 12 Aug 2009 10:08:11 +0100 [thread overview]
Message-ID: <20090812090811.GA5404@us.ibm.com> (raw)
In-Reply-To: <cfd18e0f0908112207y186d0aav6e0e55ce070778cf@mail.gmail.com>
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On Wed, 12 Aug 2009, Michael Kerrisk wrote:
> Eric,
>
> On Wed, Aug 12, 2009 at 12:13 AM, Eric B Munson<ebmunson@us.ibm.com> wrote:
> > This patch adds a flag for mmap that will be used to request a huge
> > page region that will look like anonymous memory to user space. This
> > is accomplished by using a file on the internal vfsmount. MAP_LARGEPAGE
> > is a modifier of MAP_ANONYMOUS and so must be specified with it. The
> > region will behave the same as a MAP_ANONYMOUS region using small pages.
>
> Does this flag provide functionality analogous to shmget(SHM_HUGETLB)?
> If so, would iot not make sense to name it similarly (i.e.,
> MAP_HUGETLB)?
>
> Cheers,
>
> Michael
>
> --
> Michael Kerrisk
> Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
> Watch my Linux system programming book progress to publication!
> http://blog.man7.org/
>
I have no particular attachment to MAP_LARGEPAGE, I will make this chage for V2.
--
Eric B Munson
IBM Linux Technology Center
ebmunson@us.ibm.com
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next prev parent reply other threads:[~2009-08-12 9:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 22:13 [PATCH 0/3] Add pseudo-anonymous huge page mappings Eric B Munson
2009-08-11 22:13 ` [PATCH 1/3] hugetlbfs: Allow the creation of files suitable for MAP_PRIVATE on the vfs internal mount Eric B Munson
2009-08-11 22:13 ` [PATCH 2/3] Add MAP_LARGEPAGE for mmaping pseudo-anonymous huge page regions Eric B Munson
[not found] ` <a45eb555ca7d9e23e5eb051e27f757ae70a6b0c5.1249999949.git.ebmunson-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-08-12 5:07 ` Michael Kerrisk
2009-08-12 5:07 ` Michael Kerrisk
2009-08-12 5:07 ` Michael Kerrisk
2009-08-12 9:08 ` Eric B Munson [this message]
2009-08-12 5:45 ` Pekka Enberg
2009-08-12 5:45 ` Pekka Enberg
2009-08-11 22:13 ` [PATCH 3/3] Add MAP_LARGEPAGE example to vm/hugetlbpage.txt Eric B Munson
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