linux-kernel - Re: [PATCH 1/9] mm: make mlockall preserve flags other than VM_LOCKED in def

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Message-ID: <50D53639.6040604@redhat.com>
Date:	Fri, 21 Dec 2012 23:25:29 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Michel Lespinasse <walken@...gle.com>
CC:	Andy Lutomirski <luto@...capital.net>,
	Ingo Molnar <mingo@...nel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>, Jorn_Engel <joern@...fs.org>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/9] mm: make mlockall preserve flags other than VM_LOCKED
 in def_flags

On 12/20/2012 07:49 PM, Michel Lespinasse wrote:
> On most architectures, def_flags is either 0 or VM_LOCKED depending on
> whether mlockall(MCL_FUTURE) was called. However, this is not an absolute
> rule as kvm support on s390 may set the VM_NOHUGEPAGE flag in def_flags.
> We don't want mlockall to clear that.
>
> Signed-off-by: Michel Lespinasse <walken@...gle.com>

Reviewed-by: Rik van Riel <riel@...hat.com>

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