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Date: Fri, 25 Sep 2015 15:03:01 -0400
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH 06/10] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM
Message-ID: <20150925190301.GB16359@cmpxchg.org>
References: <1442832762-7247-1-git-send-email-mgorman@techsingularity.net>
 <1442832762-7247-7-git-send-email-mgorman@techsingularity.net>
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In-Reply-To: <1442832762-7247-7-git-send-email-mgorman@techsingularity.net>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Vlastimil Babka <vbabka@suse.cz>, 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 Mon, Sep 21, 2015 at 11:52:38AM +0100, 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>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>

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