From: Christoph Lameter <clameter@engr.sgi.com>
To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: linux-mm <linux-mm@kvack.org>
Subject: Re: [RFC] [PATCH 2.6.20-mm2] Optionally inherit mlockall() semantics across fork()/exec()
Date: Fri, 23 Feb 2007 11:16:30 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0702231111070.31495@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <1172242682.5059.19.camel@localhost>
On Fri, 23 Feb 2007, Lee Schermerhorn wrote:
> The semantics of mlockall(), whether you use the '_CURRENT and/or the
> '_FUTURE flag, apply to the entire address space of the process. [See
> http://www.opengroup.org/onlinepubs/7990989775/xsh/mlockall.html] The
> patch enables inheritance of these semantics across fork() [CURRENT] and
> exec() [FUTURE].
Ahh. I see. Then setting a flags in the vma would work? There is already
logic to handle VM_LOCKED in mm/mlock.c and we keep on checking
vma->vm_flags. Maybe add VM_LOCKED_FUTURE?
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prev parent reply other threads:[~2007-02-23 19:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-22 21:03 [RFC] [PATCH 2.6.20-mm2] Optionally inherit mlockall() semantics across fork()/exec() Lee Schermerhorn
2007-02-22 23:09 ` Christoph Lameter
2007-02-23 14:58 ` Lee Schermerhorn
2007-02-23 19:16 ` Christoph Lameter [this message]
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