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Subject: Re: [PATCH 08/12] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM
References: <1440418191-10894-1-git-send-email-mgorman@techsingularity.net>
 <1440418191-10894-9-git-send-email-mgorman@techsingularity.net>
From: Vlastimil Babka <vbabka@suse.cz>
Message-ID: <55DDAEBE.8090708@suse.cz>
Date: Wed, 26 Aug 2015 14:19:10 +0200
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To: Mel Gorman <mgorman@techsingularity.net>, Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>, Rik van Riel <riel@redhat.com>, David Rientjes <rientjes@google.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Michal Hocko <mhocko@kernel.org>, Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>

On 08/24/2015 02:09 PM, Mel Gorman wrote:
> __GFP_WAIT was used to signal that the caller was in atomic context and
> could not sleep.  Now it is possible to distinguish between true atomic
> context and callers that are not willing to sleep. The latter should clear
> __GFP_DIRECT_RECLAIM so kswapd will still wake. As clearing __GFP_WAIT
> behaves differently, there is a risk that people will clear the wrong
> flags. This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly indicate
> what it does -- setting it allows all reclaim activity, clearing them
> prevents it.
>
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
> Acked-by: Michal Hocko <mhocko@suse.com>

Acked-by: Vlastimil Babka <vbabka@suse.cz>

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