From: Vlastimil Babka <vbabka@suse.cz>
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>
Subject: Re: [PATCH 08/12] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM
Date: Wed, 26 Aug 2015 14:19:10 +0200 [thread overview]
Message-ID: <55DDAEBE.8090708@suse.cz> (raw)
In-Reply-To: <1440418191-10894-9-git-send-email-mgorman@techsingularity.net>
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>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Vlastimil Babka <vbabka@suse.cz>
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>
Subject: Re: [PATCH 08/12] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM
Date: Wed, 26 Aug 2015 14:19:10 +0200 [thread overview]
Message-ID: <55DDAEBE.8090708@suse.cz> (raw)
In-Reply-To: <1440418191-10894-9-git-send-email-mgorman@techsingularity.net>
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>
next prev parent reply other threads:[~2015-08-26 12:19 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-24 12:09 [PATCH 00/12] Remove zonelist cache and high-order watermark checking v3 Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 12:09 ` [PATCH 01/12] mm, page_alloc: Remove unnecessary parameter from zone_watermark_ok_safe Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 12:09 ` [PATCH 02/12] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 12:09 ` [PATCH 03/12] mm, page_alloc: Remove unnecessary taking of a seqlock when cpusets are disabled Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-26 10:25 ` Michal Hocko
2015-08-26 10:25 ` Michal Hocko
2015-08-24 12:09 ` [PATCH 04/12] mm, page_alloc: Only check cpusets when one exists that can be mem-controlled Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 12:37 ` Vlastimil Babka
2015-08-24 12:37 ` Vlastimil Babka
2015-08-24 13:16 ` Mel Gorman
2015-08-24 13:16 ` Mel Gorman
2015-08-24 20:53 ` Vlastimil Babka
2015-08-24 20:53 ` Vlastimil Babka
2015-08-25 10:33 ` Mel Gorman
2015-08-25 10:33 ` Mel Gorman
2015-08-25 11:09 ` Vlastimil Babka
2015-08-25 11:09 ` Vlastimil Babka
2015-08-26 13:41 ` Mel Gorman
2015-08-26 13:41 ` Mel Gorman
2015-08-26 10:46 ` Michal Hocko
2015-08-26 10:46 ` Michal Hocko
2015-08-24 12:09 ` [PATCH 05/12] mm, page_alloc: Remove unecessary recheck of nodemask Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-25 14:32 ` Vlastimil Babka
2015-08-25 14:32 ` Vlastimil Babka
2015-08-24 12:09 ` [PATCH 06/12] mm, page_alloc: Use masks and shifts when converting GFP flags to migrate types Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-25 14:36 ` Vlastimil Babka
2015-08-25 14:36 ` Vlastimil Babka
2015-08-24 12:09 ` [PATCH 07/12] mm, page_alloc: Distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 18:29 ` Mel Gorman
2015-08-24 18:29 ` Mel Gorman
2015-08-25 15:37 ` Vlastimil Babka
2015-08-25 15:37 ` Vlastimil Babka
2015-08-26 14:45 ` Mel Gorman
2015-08-26 14:45 ` Mel Gorman
2015-08-26 16:24 ` Vlastimil Babka
2015-08-26 16:24 ` Vlastimil Babka
2015-08-26 18:10 ` Mel Gorman
2015-08-26 18:10 ` Mel Gorman
2015-08-27 9:18 ` Vlastimil Babka
2015-08-27 9:18 ` Vlastimil Babka
2015-08-25 15:48 ` Vlastimil Babka
2015-08-25 15:48 ` Vlastimil Babka
2015-08-26 13:05 ` Michal Hocko
2015-08-26 13:05 ` Michal Hocko
2015-09-08 6:49 ` Joonsoo Kim
2015-09-08 6:49 ` Joonsoo Kim
2015-09-09 12:22 ` Mel Gorman
2015-09-09 12:22 ` Mel Gorman
2015-09-18 6:25 ` Joonsoo Kim
2015-09-18 6:25 ` Joonsoo Kim
2015-08-24 12:09 ` [PATCH 08/12] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-26 12:19 ` Vlastimil Babka [this message]
2015-08-26 12:19 ` Vlastimil Babka
2015-08-24 12:09 ` [PATCH 09/12] mm, page_alloc: Delete the zonelist_cache Mel Gorman
2015-08-24 12:09 ` Mel Gorman
2015-08-24 12:29 ` [PATCH 10/12] mm, page_alloc: Remove MIGRATE_RESERVE Mel Gorman
2015-08-24 12:29 ` Mel Gorman
2015-08-24 12:29 ` [PATCH 11/12] mm, page_alloc: Reserve pageblocks for high-order atomic allocations on demand Mel Gorman
2015-08-24 12:29 ` Mel Gorman
2015-08-26 12:44 ` Vlastimil Babka
2015-08-26 12:44 ` Vlastimil Babka
2015-08-26 14:53 ` Michal Hocko
2015-08-26 14:53 ` Michal Hocko
2015-08-26 15:38 ` Mel Gorman
2015-08-26 15:38 ` Mel Gorman
2015-09-08 8:01 ` Joonsoo Kim
2015-09-08 8:01 ` Joonsoo Kim
2015-09-09 12:32 ` Mel Gorman
2015-09-09 12:32 ` Mel Gorman
2015-09-18 6:38 ` Joonsoo Kim
2015-09-18 6:38 ` Joonsoo Kim
2015-09-21 10:51 ` Mel Gorman
2015-09-21 10:51 ` Mel Gorman
2015-08-24 12:30 ` [PATCH 12/12] mm, page_alloc: Only enforce watermarks for order-0 allocations Mel Gorman
2015-08-24 12:30 ` Mel Gorman
2015-08-26 13:42 ` Vlastimil Babka
2015-08-26 13:42 ` Vlastimil Babka
2015-08-26 14:53 ` Mel Gorman
2015-08-26 14:53 ` Mel Gorman
2015-08-28 12:10 ` Michal Hocko
2015-08-28 12:10 ` Michal Hocko
2015-08-28 14:12 ` Mel Gorman
2015-08-28 14:12 ` Mel Gorman
2015-09-08 8:26 ` Joonsoo Kim
2015-09-08 8:26 ` Joonsoo Kim
2015-09-09 12:39 ` Mel Gorman
2015-09-09 12:39 ` Mel Gorman
2015-09-18 6:56 ` Joonsoo Kim
2015-09-18 6:56 ` Joonsoo Kim
2015-09-21 10:51 ` Mel Gorman
2015-09-21 10:51 ` Mel Gorman
2015-09-30 8:51 ` Vitaly Wool
2015-09-30 8:51 ` Vitaly Wool
2015-09-30 13:52 ` Vlastimil Babka
2015-09-30 13:52 ` Vlastimil Babka
2015-09-30 14:16 ` Vitaly Wool
2015-09-30 14:16 ` Vitaly Wool
2015-09-30 14:43 ` Vlastimil Babka
2015-09-30 14:43 ` Vlastimil Babka
2015-09-30 15:18 ` Mel Gorman
2015-09-30 15:18 ` Mel Gorman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=55DDAEBE.8090708@suse.cz \
--to=vbabka@suse.cz \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=iamjoonsoo.kim@lge.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@techsingularity.net \
--cc=mhocko@kernel.org \
--cc=riel@redhat.com \
--cc=rientjes@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.