linux-kernel - Re: [PATCH 2/3] mm, migrate: remove reason argument from new_page

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Date:   Wed, 3 Jan 2018 15:09:23 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Zi Yan <zi.yan@...rutgers.edu>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Vlastimil Babka <vbabka@...e.cz>,
        Andrea Reale <ar@...ux.vnet.ibm.com>, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] mm, migrate: remove reason argument from new_page_t

On Wed 03-01-18 19:30:38, Anshuman Khandual wrote:
> On 01/03/2018 01:55 PM, Michal Hocko wrote:
> > From: Michal Hocko <mhocko@...e.com>
> > 
> > No allocation callback is using this argument anymore. new_page_node
> > used to use this parameter to convey node_id resp. migration error
> > up to move_pages code (do_move_page_to_node_array). The error status
> > never made it into the final status field and we have a better way
> > to communicate node id to the status field now. All other allocation
> > callbacks simply ignored the argument so we can drop it finally.
> 
> There is a migrate_pages() call in powerpc which needs to be changed
> as well. It was failing the build on powerpc.

Yes, see http://lkml.kernel.org/r/20180103091134.GB11319@dhcp22.suse.cz

-- 
Michal Hocko
SUSE Labs