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Date: Tue, 19 May 2015 15:55:24 +0200 From: Vlastimil Babka <vbabka@...e.cz> To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Andrew Morton <akpm@...ux-foundation.org>, Andrea Arcangeli <aarcange@...hat.com>, Hugh Dickins <hughd@...gle.com> CC: Dave Hansen <dave.hansen@...el.com>, Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>, Christoph Lameter <cl@...two.org>, Naoya Horiguchi <n-horiguchi@...jp.nec.com>, Steve Capper <steve.capper@...aro.org>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>, Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...e.cz>, Jerome Marchand <jmarchan@...hat.com>, Sasha Levin <sasha.levin@...cle.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [PATCHv5 24/28] thp, mm: split_huge_page(): caller need to lock page On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: > We're going to use migration entries instead of compound_lock() to > stabilize page refcounts. Setup and remove migration entries require > page to be locked. > > Some of split_huge_page() callers already have the page locked. Let's > require everybody to lock the page before calling split_huge_page(). > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com> > Tested-by: Sasha Levin <sasha.levin@...cle.com> Acked-by: Vlastimil Babka <vbabka@...e.cz> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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