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From: Oscar Salvador <osalvador@suse.de>
To: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@gmail.com>,
	akpm@linux-foundation.org, vbabka@suse.cz,
	pavel.tatashin@microsoft.com, rppt@linux.vnet.ibm.com,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] mm, page_alloc: Fix has_unmovable_pages for HugePages
Date: Thu, 20 Dec 2018 13:49:28 +0100	[thread overview]
Message-ID: <20181220124925.itwuuacgztpgsk7s@d104.suse.de> (raw)
In-Reply-To: <20181220091228.GB14234@dhcp22.suse.cz>

On Thu, Dec 20, 2018 at 10:12:28AM +0100, Michal Hocko wrote:
> > <--
> > skip_pages = (1 << compound_order(head)) - (page - head);
> > iter = skip_pages - 1;
> > --
> > 
> > which looks more simple IMHO.
> 
> Agreed!

Andrew, can you please apply the next diff chunk on top of the patch:

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4812287e56a0..978576d93783 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -8094,7 +8094,7 @@ bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
 				goto unmovable;
 
 			skip_pages = (1 << compound_order(head)) - (page - head);
-			iter = round_up(iter + 1, skip_pages) - 1;
+			iter = skip_pages - 1;
 			continue;
 		}

Thanks!
-- 
Oscar Salvador
SUSE L3

  reply	other threads:[~2018-12-20 12:49 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-17 22:51 [PATCH v2] mm, page_alloc: Fix has_unmovable_pages for HugePages Oscar Salvador
2018-12-17 22:51 ` Oscar Salvador
2018-12-17 23:07 ` Andrew Morton
2018-12-18  7:36   ` Michal Hocko
2018-12-18 21:46     ` Andrew Morton
2018-12-18 21:51   ` Oscar Salvador
2018-12-19 14:25 ` Wei Yang
2018-12-19 14:25   ` Wei Yang
2018-12-19 14:28   ` Wei Yang
2018-12-19 14:28     ` Wei Yang
2018-12-19 23:39   ` Oscar Salvador
2018-12-20  9:12     ` Michal Hocko
2018-12-20 12:49       ` Oscar Salvador [this message]
2018-12-20 13:06         ` Michal Hocko
2018-12-20 13:41           ` Oscar Salvador
2018-12-20 14:21             ` Oscar Salvador
2018-12-20 14:39               ` Michal Hocko
2018-12-20 15:37                 ` Oscar Salvador
2018-12-20 15:32               ` Wei Yang
2018-12-20 15:32                 ` Wei Yang
2018-12-20 15:52                 ` Oscar Salvador
2018-12-20 13:08         ` Wei Yang
2018-12-20 13:49           ` Oscar Salvador

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