From: Andrea Arcangeli <aarcange@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-mm@kvack.org, Marcelo Tosatti <mtosatti@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
Izik Eidus <ieidus@redhat.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>,
Andi Kleen <andi@firstfloor.org>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Chris Wright <chrisw@sous-sol.org>,
Andrew Morton <akpm@linux-foundation.org>,
bpicco@redhat.com, Christoph Hellwig <chellwig@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Subject: Re: [PATCH 01 of 31] define MADV_HUGEPAGE
Date: Tue, 26 Jan 2010 13:30:37 +0100 [thread overview]
Message-ID: <20100126123037.GE30452@random.random> (raw)
In-Reply-To: <20100126114101.GB16468@csn.ul.ie>
On Tue, Jan 26, 2010 at 11:41:01AM +0000, Mel Gorman wrote:
> On Mon, Jan 25, 2010 at 06:18:52PM +0100, Andrea Arcangeli wrote:
> > From: Andrea Arcangeli <aarcange@redhat.com>
> >
> > Define MADV_HUGEPAGE.
> >
> > Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
> > ---
> >
> > diff --git a/include/asm-generic/mman-common.h b/include/asm-generic/mman-common.h
> > --- a/include/asm-generic/mman-common.h
> > +++ b/include/asm-generic/mman-common.h
> > @@ -45,6 +45,8 @@
> > #define MADV_MERGEABLE 12 /* KSM may merge identical pages */
> > #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
> >
> > +#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
> > +
>
> The use of 14 collides with parisc
>
> $ git grep MADV_ | grep define | grep 14
> arch/parisc/include/asm/mman.h:#define MADV_16K_PAGES 14 /* Use 16K pages */
Very error prone that you can register in arch file, there are 4
billions MADV_ available, the arch files shall be removed and it
should all be defined in mman-common.h.
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next prev parent reply other threads:[~2010-01-26 12:31 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-25 17:18 [PATCH 00 of 31] Transparent Hugepage support #6 Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 01 of 31] define MADV_HUGEPAGE Andrea Arcangeli
2010-01-26 11:41 ` Mel Gorman
2010-01-26 12:30 ` Andrea Arcangeli [this message]
2010-01-26 13:46 ` Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 02 of 31] compound_lock Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 03 of 31] alter compound get_page/put_page Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 04 of 31] update futex compound knowledge Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 05 of 31] fix bad_page to show the real reason the page is bad Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 06 of 31] clear compound mapping Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 07 of 31] add native_set_pmd_at Andrea Arcangeli
2010-01-25 17:18 ` [PATCH 08 of 31] add pmd paravirt ops Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 09 of 31] no paravirt version of pmd ops Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 10 of 31] export maybe_mkwrite Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 11 of 31] comment reminder in destroy_compound_page Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 12 of 31] config_transparent_hugepage Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 13 of 31] add pmd mangling functions to x86 Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 14 of 31] add pmd mangling generic functions Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 15 of 31] special pmd_trans_* functions Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 16 of 31] bail out gup_fast on splitting pmd Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 17 of 31] pte alloc trans splitting Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 18 of 31] add pmd mmu_notifier helpers Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 19 of 31] clear page compound Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 20 of 31] add pmd_huge_pte to mm_struct Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 21 of 31] split_huge_page_mm/vma Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 22 of 31] split_huge_page paging Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 23 of 31] clear_copy_huge_page Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 24 of 31] kvm mmu transparent hugepage support Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 25 of 31] transparent hugepage core Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 26 of 31] madvise(MADV_HUGEPAGE) Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 27 of 31] pmd_trans_huge migrate bugcheck Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 28 of 31] memcg compound Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 29 of 31] memcg huge memory Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 30 of 31] transparent hugepage vmstat Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 31 of 31] khugepaged Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2010-01-26 13:51 [PATCH 00 of 31] Transparent Hugepage support #7 Andrea Arcangeli
2010-01-26 13:51 ` [PATCH 01 of 31] define MADV_HUGEPAGE Andrea Arcangeli
2010-01-26 14:49 ` Rik van Riel
2010-01-26 17:49 ` Mel Gorman
2010-01-27 16:37 ` Hugh Dickins
2010-01-27 17:13 ` Andrea Arcangeli
2010-01-27 17:29 ` Hugh Dickins
2010-01-27 17:45 ` Pekka Enberg
2010-01-27 21:44 ` Arnd Bergmann
2010-01-28 14:33 [PATCH 00 of 31] Transparent Hugepage support #8 Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 01 of 31] define MADV_HUGEPAGE Andrea Arcangeli
2010-01-28 20:30 ` Arnd Bergmann
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