From: Eric B Munson <ebmunson@us.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-man@vger.kernel.org, mtk.manpages@gmail.com,
randy.dunlap@oracle.com, rth@twiddle.net,
ink@jurassic.park.msu.ru
Subject: Re: [PATCH] Add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions
Date: Mon, 21 Sep 2009 06:25:20 -0600 [thread overview]
Message-ID: <20090921122520.GA6706@us.ibm.com> (raw)
In-Reply-To: <200909181719.47240.arnd@arndb.de>
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On Fri, 18 Sep 2009, Arnd Bergmann 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_HUGETLB
> 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.
>
> The patch also adds the MAP_STACK flag, which was previously defined
> only on some architectures but not on others. Since MAP_STACK is meant
> to be a hint only, architectures can define it without assigning a
> specific meaning to it.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
I think this is a more sane way of handling the mman flags.
Acked-by: Eric B Munson <ebmunson@us.ibm.com>
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next prev parent reply other threads:[~2009-09-21 12:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-25 11:14 [PATCH 0/3] Add pseudo-anonymous huge page mappings V4 Eric B Munson
2009-08-25 11:14 ` [PATCH 1/3] hugetlbfs: Allow the creation of files suitable for MAP_PRIVATE on the vfs internal mount Eric B Munson
2009-08-25 11:14 ` [PATCH 2/3] Add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions Eric B Munson
2009-08-25 11:14 ` [PATCH 3/3] Add MAP_HUGETLB example Eric B Munson
2009-09-17 22:44 ` [PATCH 2/3] Add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions Andrew Morton
2009-09-18 0:46 ` Andrew Morton
2009-09-18 15:19 ` [PATCH] " Arnd Bergmann
2009-09-18 16:48 ` [PATCH] remove duplicate asm/mman.h files Arnd Bergmann
2009-09-18 19:37 ` David Rientjes
2009-09-21 8:31 ` Arnd Bergmann
2009-09-21 9:13 ` David Rientjes
2009-09-21 9:30 ` Arnd Bergmann
2009-09-21 12:02 ` Hugh Dickins
2009-09-21 22:55 ` David Rientjes
2009-09-21 23:25 ` Luck, Tony
2009-09-21 23:46 ` David Rientjes
2009-09-21 23:58 ` Ulrich Drepper
2009-09-21 12:27 ` Eric B Munson
2009-09-21 12:25 ` Eric B Munson [this message]
2009-08-26 19:34 ` [PATCH 1/3] hugetlbfs: Allow the creation of files suitable for MAP_PRIVATE on the vfs internal mount David Rientjes
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