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Date: Mon, 19 Feb 2007 22:24:24 +0100
Subject: Re: [Xenomai-core] Re: I-pipe 1.7 breaks mlockall safety check
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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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	discussions\)" <xenomai.xenomai.org>
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To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai-core <xenomai@xenomai.org>

Jan Kiszka wrote:
 > May this hunk explain the behaviour?
 > 
 > http://www.rts.uni-hannover.de/xenomai/lxr/source/ksrc/arch/i386/patches/adeos-ipipe-2.6.20-i386-1.7-02.patch?a=i386;v=SVN-2.3.x#7755
 > 
 > munlockall is realised via mlockall, so OR'ing here would never take
 > away any flag.

My intent was to avoid that the VM_PINNED flag be cleared by mlockall.
So, I guess the correct pattern is:

current->mm->def_flags = current->mm->def_flags & ~VM_LOCKED | def_flags;

-- 


					    Gilles Chanteperdrix.