[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Thu, 12 Dec 2013 09:07:14 +0900
From: Joonsoo Kim <iamjoonsoo.kim@....com>
To: Christoph Lameter <cl@...ux.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
Rafael Aquini <aquini@...hat.com>,
Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
Vlastimil Babka <vbabka@...e.cz>,
Zhang Yanfei <zhangyanfei@...fujitsu.com>
Subject: Re: [PATCH v2 7/7] mm/migrate: remove result argument on page
allocation function for migration
On Wed, Dec 11, 2013 at 04:00:56PM +0000, Christoph Lameter wrote:
> On Wed, 11 Dec 2013, Joonsoo Kim wrote:
>
> > In do_move_pages(), if error occurs, 'goto out_pm' is executed and the
> > page status doesn't back to userspace. So we don't need to store err number.
>
> If a page cannot be moved then the error code is containing the number of
> pages that could not be migrated. The check there is for err < 0.
> So a positive number is not an error.
>
> migrate_pages only returns an error code if we are running out of memory.
Ah... I missed it. I will drop this patch and send v3 for whole patchset.
Thanks.
--
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/
Powered by blists - more mailing lists