From: Johannes Weiner <hannes@cmpxchg.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>
Subject: Re: [PATCH 05/10] mm, page_alloc: Distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
Date: Thu, 24 Sep 2015 16:55:09 -0400 [thread overview]
Message-ID: <20150924205509.GI3009@cmpxchg.org> (raw)
In-Reply-To: <1442832762-7247-6-git-send-email-mgorman@techsingularity.net>
On Mon, Sep 21, 2015 at 11:52:37AM +0100, Mel Gorman wrote:
> @@ -119,10 +134,10 @@ struct vm_area_struct;
> #define GFP_USER (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL)
> #define GFP_HIGHUSER (GFP_USER | __GFP_HIGHMEM)
> #define GFP_HIGHUSER_MOVABLE (GFP_HIGHUSER | __GFP_MOVABLE)
> -#define GFP_IOFS (__GFP_IO | __GFP_FS)
> -#define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \
> - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \
> - __GFP_NO_KSWAPD)
> +#define GFP_IOFS (__GFP_IO | __GFP_FS | __GFP_KSWAPD_RECLAIM)
These are some really odd semantics to be given a name like that.
GFP_IOFS was introduced as a short-hand for testing/setting/clearing
these two bits at the same time, not to be used for allocations. In
fact, the only user for allocations is lustre, and it's not at all
obious why those sites shouldn't include __GFP_WAIT as well.
Removing this definition altogether would probably be best.
--
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>
next prev parent reply other threads:[~2015-09-24 20:55 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-21 10:52 [PATCH 00/10] Remove zonelist cache and high-order watermark checking v4 Mel Gorman
2015-09-21 10:52 ` [PATCH 01/10] mm, page_alloc: Remove unnecessary parameter from zone_watermark_ok_safe Mel Gorman
2015-09-24 20:01 ` Johannes Weiner
2015-09-21 10:52 ` [PATCH 02/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Mel Gorman
2015-09-24 20:05 ` Johannes Weiner
2015-09-21 10:52 ` [PATCH 03/10] mm, page_alloc: Remove unnecessary taking of a seqlock when cpusets are disabled Mel Gorman
2015-09-24 20:06 ` Johannes Weiner
2015-09-30 22:22 ` David Rientjes
2015-10-01 7:35 ` Vlastimil Babka
2015-09-21 10:52 ` [PATCH 04/10] mm, page_alloc: Use masks and shifts when converting GFP flags to migrate types Mel Gorman
2015-09-24 20:34 ` Johannes Weiner
2015-09-25 12:50 ` Mel Gorman
2015-09-25 13:56 ` Johannes Weiner
2015-09-21 10:52 ` [PATCH 05/10] mm, page_alloc: Distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd Mel Gorman
2015-09-24 13:51 ` Michal Hocko
2015-09-24 20:55 ` Johannes Weiner [this message]
2015-09-25 12:51 ` Mel Gorman
2015-09-25 19:01 ` Johannes Weiner
2015-09-29 13:35 ` Mel Gorman
2015-09-30 12:26 ` Vlastimil Babka
2015-09-30 13:17 ` Mel Gorman
2015-10-01 3:04 ` Drokin, Oleg
2015-10-02 12:30 ` Mel Gorman
2015-09-21 10:52 ` [PATCH 06/10] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM Mel Gorman
2015-09-25 19:03 ` Johannes Weiner
2015-09-28 23:55 ` Andrew Morton
2015-09-29 13:37 ` Mel Gorman
2015-10-01 8:39 ` Vlastimil Babka
2015-10-02 13:03 ` [PATCH] mm: page_alloc: Hide some GFP internals and document the bits and flag combinations -fix Mel Gorman
2015-10-01 14:06 ` [PATCH 06/10] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM Michal Hocko
2015-09-30 22:25 ` David Rientjes
2015-09-21 10:52 ` [PATCH 07/10] mm, page_alloc: Delete the zonelist_cache Mel Gorman
2015-09-25 19:09 ` Johannes Weiner
2015-09-21 10:52 ` [PATCH 08/10] mm, page_alloc: Remove MIGRATE_RESERVE Mel Gorman
2015-09-21 10:52 ` [PATCH 09/10] mm, page_alloc: Reserve pageblocks for high-order atomic allocations on demand Mel Gorman
2015-09-24 13:50 ` Michal Hocko
2015-09-25 19:22 ` Johannes Weiner
2015-09-29 21:01 ` Andrew Morton
2015-09-30 8:27 ` Mel Gorman
2015-09-30 14:02 ` Vlastimil Babka
2015-09-21 12:03 ` [PATCH 10/10] mm, page_alloc: Only enforce watermarks for order-0 allocations Mel Gorman
2015-09-25 19:32 ` Johannes Weiner
2015-09-29 21:05 ` Andrew Morton
2015-09-30 8:46 ` Mel Gorman
2015-09-30 14:17 ` Vlastimil Babka
2015-09-30 15:12 ` Mel Gorman
2015-09-30 20:37 ` Andrew Morton
2015-09-30 14:11 ` Vlastimil Babka
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=20150924205509.GI3009@cmpxchg.org \
--to=hannes@cmpxchg.org \
--cc=akpm@linux-foundation.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 \
--cc=vbabka@suse.cz \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox