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Date: Mon, 20 Jan 2014 15:12:02 +0900 From: Minchan Kim <minchan@...nel.org> To: Mel Gorman <mgorman@...e.de> Cc: Andrew Morton <akpm@...ux-foundation.org>, Xishi Qiu <qiuxishi@...wei.com>, riel@...hat.com, aquini@...hat.com, linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] mm: Improve documentation of page_order On Fri, Jan 17, 2014 at 02:32:21PM +0000, Mel Gorman wrote: > Developers occasionally try and optimise PFN scanners by using page_order > but miss that in general it requires zone->lock. This has happened twice for > compaction.c and rejected both times. This patch clarifies the documentation > of page_order and adds a note to compaction.c why page_order is not used. > > Signed-off-by: Mel Gorman <mgorman@...e.de> Except Laura pointed out, Acked-by: Minchan Kim <minchan@...nel.org> Thanks for following up this issue without forgetting. -- Kind regards, Minchan Kim -- 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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