linux-kernel - Re: [PATCH 1/7] mm/page_alloc: Move gfp_allowed_mask enforcement to prepare_alloc

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Message-ID: <20210319174926.GC3697@techsingularity.net>
Date:   Fri, 19 Mar 2021 17:49:26 +0000
From:   Mel Gorman <mgorman@...hsingularity.net>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Christoph Hellwig <hch@...radead.org>,
        Alexander Duyck <alexander.duyck@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-Net <netdev@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>,
        Linux-NFS <linux-nfs@...r.kernel.org>
Subject: Re: [PATCH 1/7] mm/page_alloc: Move gfp_allowed_mask enforcement to
 prepare_alloc_pages

On Fri, Mar 19, 2021 at 05:11:39PM +0100, Vlastimil Babka wrote:
> On 3/12/21 4:43 PM, Mel Gorman wrote:
> > __alloc_pages updates GFP flags to enforce what flags are allowed
> > during a global context such as booting or suspend. This patch moves the
> > enforcement from __alloc_pages to prepare_alloc_pages so the code can be
> > shared between the single page allocator and a new bulk page allocator.
> > 
> > When moving, it is obvious that __alloc_pages() and __alloc_pages
> > use different names for the same variable. This is an unnecessary
> > complication so rename gfp_mask to gfp in prepare_alloc_pages() so the
> > name is consistent.
> > 
> > No functional change.
> 
> Hm, I have some doubts.
> 

And you were right, I'll drop the patch and apply the same mask to the
bulk allocator.

-- 
Mel Gorman
SUSE Labs