From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: David Rientjes <rientjes@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Minchan Kim <minchan@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Michal Nazarewicz <mina86@mina86.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Christoph Lameter <cl@linux.com>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Subject: Re: [PATCH v5 05/14] mm, compaction: move pageblock checks up from isolate_migratepages_range()
Date: Wed, 30 Jul 2014 02:21:42 +0300 [thread overview]
Message-ID: <20140729232142.GB17685@node.dhcp.inet.fi> (raw)
In-Reply-To: <alpine.DEB.2.02.1407291559130.20991@chino.kir.corp.google.com>
On Tue, Jul 29, 2014 at 04:02:09PM -0700, David Rientjes wrote:
> Hmm, I'm confused at how that could be true, could you explain what
> memory other than thp can return true for PageTransHuge()?
PageTransHuge() will be true for any head of compound page if THP is
enabled compile time: hugetlbfs, slab, whatever.
--
Kirill A. Shutemov
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WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: David Rientjes <rientjes@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Minchan Kim <minchan@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Michal Nazarewicz <mina86@mina86.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Christoph Lameter <cl@linux.com>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Subject: Re: [PATCH v5 05/14] mm, compaction: move pageblock checks up from isolate_migratepages_range()
Date: Wed, 30 Jul 2014 02:21:42 +0300 [thread overview]
Message-ID: <20140729232142.GB17685@node.dhcp.inet.fi> (raw)
In-Reply-To: <alpine.DEB.2.02.1407291559130.20991@chino.kir.corp.google.com>
On Tue, Jul 29, 2014 at 04:02:09PM -0700, David Rientjes wrote:
> Hmm, I'm confused at how that could be true, could you explain what
> memory other than thp can return true for PageTransHuge()?
PageTransHuge() will be true for any head of compound page if THP is
enabled compile time: hugetlbfs, slab, whatever.
--
Kirill A. Shutemov
next prev parent reply other threads:[~2014-07-29 23:22 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-28 13:11 [PATCH v5 00/14] compaction: balancing overhead and success rates Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 01/14] mm, THP: don't hold mmap_sem in khugepaged when allocating THP Vlastimil Babka
2014-07-28 23:39 ` David Rientjes
2014-07-28 13:11 ` [PATCH v5 02/14] mm, compaction: defer each zone individually instead of preferred zone Vlastimil Babka
2014-07-28 23:59 ` David Rientjes
2014-07-29 9:02 ` Vlastimil Babka
2014-07-29 6:38 ` Joonsoo Kim
2014-07-29 9:12 ` Vlastimil Babka
2014-07-30 16:22 ` Vlastimil Babka
2014-08-01 8:51 ` Vlastimil Babka
2014-08-04 6:45 ` Joonsoo Kim
2014-07-28 13:11 ` [PATCH v5 03/14] mm, compaction: do not count compact_stall if all zones skipped compaction Vlastimil Babka
2014-07-29 0:04 ` David Rientjes
2014-07-28 13:11 ` [PATCH v5 04/14] mm, compaction: do not recheck suitable_migration_target under lock Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 05/14] mm, compaction: move pageblock checks up from isolate_migratepages_range() Vlastimil Babka
2014-07-29 0:29 ` David Rientjes
2014-07-29 0:29 ` David Rientjes
2014-07-29 9:27 ` Vlastimil Babka
2014-07-29 9:27 ` Vlastimil Babka
2014-07-29 23:02 ` David Rientjes
2014-07-29 23:02 ` David Rientjes
2014-07-29 23:21 ` Kirill A. Shutemov [this message]
2014-07-29 23:21 ` Kirill A. Shutemov
2014-07-29 23:51 ` David Rientjes
2014-07-29 23:51 ` David Rientjes
2014-07-30 9:27 ` Vlastimil Babka
2014-07-30 9:27 ` Vlastimil Babka
2014-07-30 9:39 ` Vlastimil Babka
2014-07-30 9:39 ` Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 06/14] mm, compaction: reduce zone checking frequency in the migration scanner Vlastimil Babka
2014-07-29 0:44 ` David Rientjes
2014-07-29 9:31 ` Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 07/14] mm, compaction: khugepaged should not give up due to need_resched() Vlastimil Babka
2014-07-29 0:59 ` David Rientjes
2014-07-29 9:45 ` Vlastimil Babka
2014-07-29 22:57 ` David Rientjes
2014-07-29 6:53 ` Joonsoo Kim
2014-07-29 7:31 ` David Rientjes
2014-07-29 8:27 ` Joonsoo Kim
2014-07-29 9:16 ` David Rientjes
2014-07-29 9:49 ` Vlastimil Babka
2014-07-29 22:53 ` David Rientjes
2014-07-30 9:08 ` Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 08/14] mm, compaction: periodically drop lock and restore IRQs in scanners Vlastimil Babka
2014-07-29 1:03 ` David Rientjes
2014-07-28 13:11 ` [PATCH v5 09/14] mm, compaction: skip rechecks when lock was already held Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 10/14] mm, compaction: remember position within pageblock in free pages scanner Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 11/14] mm, compaction: skip buddy pages by their order in the migrate scanner Vlastimil Babka
2014-07-29 1:05 ` David Rientjes
2014-07-28 13:11 ` [PATCH v5 12/14] mm: rename allocflags_to_migratetype for clarity Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 13/14] mm, compaction: pass gfp mask to compact_control Vlastimil Babka
2014-07-28 13:11 ` [PATCH v5 14/14] mm, compaction: try to capture the just-created high-order freepage Vlastimil Babka
2014-07-29 7:34 ` Joonsoo Kim
2014-07-29 15:34 ` Vlastimil Babka
2014-07-30 8:39 ` Joonsoo Kim
2014-07-30 9:56 ` Vlastimil Babka
2014-07-30 14:19 ` Joonsoo Kim
2014-07-30 15:05 ` Vlastimil Babka
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