From: Adam Litke <agl@us.ibm.com>
To: 'David Gibson' <david@gibson.dropbear.id.au>
Cc: Andrew Morton <akpm@osdl.org>,
"Chen, Kenneth W" <kenneth.w.chen@intel.com>,
'Christoph Lameter' <christoph@schroedinger.engr.sgi.com>,
Hugh Dickins <hugh@veritas.com>,
bill.irwin@oracle.com, linux-mm@kvack.org
Subject: Re: [RFC] reduce hugetlb_instantiation_mutex usage
Date: Mon, 30 Oct 2006 14:55:48 -0600 [thread overview]
Message-ID: <1162241748.16427.9.camel@localhost.localdomain> (raw)
In-Reply-To: <20061027014740.GD11733@localhost.localdomain>
On Fri, 2006-10-27 at 11:47 +1000, 'David Gibson' wrote:
> libhugetlbfs: Testcase for MAP_PRIVATE OOM-liable race condition
>
> The spurious OOM condition which can be caused by race conditions in
> the hugetlb fault handler can be triggered with both SHARED mappings
> (separate processes racing on the same address_space) and with PRIVATE
> mappings (different threads racing on the same vma).
>
> At present the alloc-instantiate-race testcase only tests the SHARED
> mapping case. Since at various times kernel fixes have been proposed
> which address only one or the other of the cases, extend the testcase
> to check the MAP_PRIVATE in addition to the MAP_SHARED case.
>
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Adam Litke <agl@us.ibm.com>
Applied.
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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next prev parent reply other threads:[~2006-10-30 20:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-26 22:17 [RFC] reduce hugetlb_instantiation_mutex usage Chen, Kenneth W
2006-10-26 22:44 ` Andrew Morton
2006-10-26 23:31 ` 'David Gibson'
2006-10-27 0:04 ` Andrew Morton
2006-10-27 3:11 ` 'David Gibson'
2006-10-27 3:35 ` Andrew Morton
2006-10-27 4:06 ` 'David Gibson'
2006-10-31 2:54 ` Chen, Kenneth W
2006-10-31 3:17 ` 'David Gibson'
2006-10-31 5:15 ` Chen, Kenneth W
2006-10-31 11:05 ` 'David Gibson'
2006-10-31 12:48 ` Hugh Dickins
2006-11-01 6:18 ` Nick Piggin
2006-11-01 10:17 ` Chen, Kenneth W
2006-11-02 3:06 ` Nick Piggin
2006-11-02 2:29 ` 'David Gibson'
2006-10-27 1:47 ` 'David Gibson'
2006-10-30 20:55 ` Adam Litke [this message]
2006-10-26 23:47 ` 'David Gibson'
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