From: Mel Gorman <mgorman@suse.de>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-next@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: linux-next: manual merge of the akpm tree with Linus' tree
Date: Wed, 22 Aug 2012 09:58:01 +0100 [thread overview]
Message-ID: <20120822085801.GA15058@suse.de> (raw)
In-Reply-To: <20120822155941.ae0b4c163fc15346a9863e5e@canb.auug.org.au>
On Wed, Aug 22, 2012 at 03:59:41PM +1000, Stephen Rothwell wrote:
> Hi Andrew,
>
> Today's linux-next merge of the akpm tree got a conflict in
> mm/page_alloc.c between commit c67fe3752abe ("mm: compaction: Abort async
> compaction if locks are contended or taking too long") from Linus' tree
> and commit "mm: remove __GFP_NO_KSWAPD" from the akpm tree.
>
> I fixed it up (see below) and can carry the fix as necessary.
Hi Stephen,
I think this will be a temporary problem. In the patch series that contained
"mm: compaction: Abort async compaction if locks are contended or taking
too long" there is a replacement patch for "mm: remove __GFP_NO_KSWAPD"
that handles the conflict. According to the mm-commits mailing list the
replacement patch has been picked up by Andrew but I see the old
versions in linux-next/akpm. It should get resolved the next time
Andrews tree gets pushed out.
> diff --cc mm/page_alloc.c
> index 5b3cc33,cefac39..0000000
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@@ -2436,11 -2429,10 +2435,10 @@@ rebalance
> /*
> * If compaction is deferred for high-order allocations, it is because
> * sync compaction recently failed. In this is the case and the caller
> - * has requested the system not be heavily disrupted, fail the
> - * allocation now instead of entering direct reclaim
> + * requested a movable allocation that does not heavily disrupt the
> + * system then fail the allocation instead of entering direct reclaim.
> */
> - if ((deferred_compaction || contended_compaction) &&
> - (gfp_mask & __GFP_NO_KSWAPD))
> - if (deferred_compaction)
> ++ if (deferred_compaction || contended_compaction)
> goto nopage;
>
> /* Try direct reclaim and then allocating */
It is not obvious at all but the correct resolution is actually the
following. Andrew should already have the right version.
@@ -2437,7 +2436,7 @@ rebalance:
* system then fail the allocation instead of entering direct reclaim.
*/
if ((deferred_compaction || contended_compaction) &&
- (gfp_mask & __GFP_NO_KSWAPD))
+ (gfp_mask & (__GFP_MOVABLE|__GFP_REPEAT)) == __GFP_MOVABLE)
goto nopage;
/* Try direct reclaim and then allocating */
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2012-08-22 8:58 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 5:59 linux-next: manual merge of the akpm tree with Linus' tree Stephen Rothwell
2012-08-22 8:58 ` Mel Gorman [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-12-02 2:17 Stephen Rothwell
2019-12-02 2:08 Stephen Rothwell
2018-10-15 7:22 Stephen Rothwell
2018-10-15 7:04 Stephen Rothwell
2018-03-26 8:56 Stephen Rothwell
2017-01-09 2:51 Stephen Rothwell
2016-12-12 5:49 Stephen Rothwell
2016-01-19 2:42 Stephen Rothwell
2016-01-19 2:36 Stephen Rothwell
2015-07-27 5:26 Stephen Rothwell
2013-09-10 4:38 Stephen Rothwell
2013-09-10 22:27 ` Andrew Morton
2013-09-10 22:29 ` Al Viro
2013-09-10 22:35 ` Andrew Morton
2013-09-10 22:36 ` Al Viro
2013-09-10 22:39 ` Al Viro
2013-09-10 22:41 ` Andrew Morton
2013-09-10 22:48 ` Al Viro
2013-09-10 22:59 ` Al Viro
2013-09-10 23:13 ` Andrew Morton
2013-09-10 23:55 ` Al Viro
2013-09-11 4:30 ` Stephen Rothwell
2013-09-10 23:37 ` Linus Torvalds
2013-09-10 23:53 ` Al Viro
2013-09-11 0:01 ` Linus Torvalds
2013-09-11 0:39 ` Dave Chinner
2013-09-13 0:56 ` Linus Torvalds
2013-09-13 1:12 ` Linus Torvalds
2013-09-13 1:35 ` Al Viro
2013-09-13 19:12 ` Linus Torvalds
2013-09-13 19:28 ` Linus Torvalds
2013-09-13 19:54 ` Linus Torvalds
2013-09-13 20:00 ` Al Viro
2013-09-13 20:18 ` Al Viro
2013-09-13 20:23 ` Al Viro
2013-09-13 20:25 ` Linus Torvalds
2013-09-13 20:31 ` Linus Torvalds
2013-09-13 20:31 ` Al Viro
2013-09-13 20:34 ` Linus Torvalds
2013-09-10 22:35 ` Linus Torvalds
2013-09-10 22:44 ` Andrew Morton
2013-09-11 0:30 ` Stephen Rothwell
2013-09-11 0:41 ` Linus Torvalds
2013-09-10 4:21 Stephen Rothwell
2013-09-10 4:09 Stephen Rothwell
2013-09-10 4:12 ` Stephen Rothwell
2013-09-09 5:38 Stephen Rothwell
2013-09-09 5:22 Stephen Rothwell
2013-09-09 5:16 Stephen Rothwell
2013-08-30 8:44 Stephen Rothwell
2013-05-27 6:20 Stephen Rothwell
2013-05-20 4:04 Stephen Rothwell
2013-05-20 12:19 ` Chris Mason
2013-05-13 5:20 Eric Paris
2013-05-13 2:07 Stephen Rothwell
2013-05-13 2:11 ` Eric Paris
2013-05-13 4:16 ` Stephen Rothwell
2013-05-13 4:49 ` Kees Cook
2013-05-13 5:14 ` Eric Paris
2013-05-02 6:01 Stephen Rothwell
2013-04-29 8:38 Stephen Rothwell
2013-04-19 7:40 Stephen Rothwell
2013-04-16 7:25 Stephen Rothwell
2013-04-03 6:10 Stephen Rothwell
2013-03-25 4:22 Stephen Rothwell
2013-03-04 2:21 Stephen Rothwell
2013-01-04 3:27 Stephen Rothwell
2012-12-11 5:25 Stephen Rothwell
2012-12-11 5:22 Stephen Rothwell
2012-12-11 7:58 ` Glauber Costa
2012-12-07 6:39 Stephen Rothwell
2012-11-30 6:24 Stephen Rothwell
2012-11-26 12:52 Stephen Rothwell
2012-11-26 12:48 Stephen Rothwell
2012-11-26 13:25 ` Xiaotian Feng
2012-11-26 12:34 Stephen Rothwell
2012-10-15 2:07 Stephen Rothwell
2012-10-15 22:14 ` Catalin Marinas
2012-10-01 14:15 Stephen Rothwell
2012-07-27 3:57 Stephen Rothwell
2012-07-02 6:39 Stephen Rothwell
2012-06-04 4:58 Stephen Rothwell
2012-05-31 4:24 Stephen Rothwell
2012-05-31 4:13 Stephen Rothwell
2012-05-31 7:25 ` Johannes Weiner
2012-05-31 8:24 ` Stephen Rothwell
2012-05-31 8:27 ` Stephen Rothwell
2012-05-21 8:23 Stephen Rothwell
2012-05-21 8:13 Stephen Rothwell
2012-05-21 8:16 ` Cyrill Gorcunov
2012-03-08 6:53 Stephen Rothwell
2012-03-08 7:32 ` Andrew Morton
2012-03-08 7:41 ` Stephen Rothwell
2012-03-08 7:50 ` Andrew Morton
2012-03-08 7:50 ` Xiao Guangrong
2012-03-08 9:59 ` Xiao Guangrong
2012-03-08 21:24 ` Andrew Morton
2012-03-08 23:42 ` Linus Torvalds
2011-12-28 7:54 Stephen Rothwell
2011-11-08 3:24 Stephen Rothwell
2011-11-01 8:16 Stephen Rothwell
2011-11-01 10:47 ` Tao Ma
2011-09-16 6:09 Stephen Rothwell
2011-08-15 4:52 Stephen Rothwell
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