From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by e6.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m4RJvFOg009084 for ; Tue, 27 May 2008 15:57:15 -0400 Received: from d01av03.pok.ibm.com (d01av03.pok.ibm.com [9.56.224.217]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v8.7) with ESMTP id m4RJt1xk162356 for ; Tue, 27 May 2008 15:55:01 -0400 Received: from d01av03.pok.ibm.com (loopback [127.0.0.1]) by d01av03.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m4RJt0nP014939 for ; Tue, 27 May 2008 15:55:01 -0400 Subject: Re: [patch 01/23] hugetlb: fix lockdep error From: Adam Litke In-Reply-To: <20080525143452.193337000@nick.local0.net> References: <20080525142317.965503000@nick.local0.net> <20080525143452.193337000@nick.local0.net> Content-Type: text/plain Date: Tue, 27 May 2008 19:55:00 +0000 Message-Id: <1211918100.12036.4.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: npiggin@suse.de Cc: linux-mm@kvack.org, kniht@us.ibm.com, andi@firstfloor.org, nacc@us.ibm.com, abh@cray.com, joachim.deguara@amd.com List-ID: On Mon, 2008-05-26 at 00:23 +1000, npiggin@suse.de wrote: > plain text document attachment (hugetlb-copy-lockdep.patch) > Signed-off-by: Nick Piggin Acked-by: Adam Litke > --- > mm/hugetlb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > Index: linux-2.6/mm/hugetlb.c > =================================================================== > --- linux-2.6.orig/mm/hugetlb.c > +++ linux-2.6/mm/hugetlb.c > @@ -785,7 +785,7 @@ int copy_hugetlb_page_range(struct mm_st > continue; > > spin_lock(&dst->page_table_lock); > - spin_lock(&src->page_table_lock); > + spin_lock_nested(&src->page_table_lock, SINGLE_DEPTH_NESTING); > if (!huge_pte_none(huge_ptep_get(src_pte))) { > if (cow) > huge_ptep_set_wrprotect(src, addr, src_pte); > -- Adam Litke - (agl at us.ibm.com) IBM Linux Technology Center -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org