From: Alex Shi <alex.shi@linux.alibaba.com>
To: akpm@linux-foundation.org, mgorman@techsingularity.net,
tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru,
daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com,
willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, shakeelb@google.com,
iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Subject: [PATCH v11 03/16] mm/compaction: correct the comments of compact_defer_shift
Date: Thu, 28 May 2020 19:00:45 +0800 [thread overview]
Message-ID: <1590663658-184131-4-git-send-email-alex.shi@linux.alibaba.com> (raw)
In-Reply-To: <1590663658-184131-1-git-send-email-alex.shi@linux.alibaba.com>
There is no compact_defer_limit. It should be compact_defer_shift in
use. and add compact_order_failed explanation.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
include/linux/mmzone.h | 1 +
mm/compaction.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d8cad09d34ff..545b663678ed 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -510,6 +510,7 @@ struct zone {
* On compaction failure, 1<<compact_defer_shift compactions
* are skipped before trying again. The number attempted since
* last failure is tracked with compact_considered.
+ * compact_order_failed is the minimum compaction failed order.
*/
unsigned int compact_considered;
unsigned int compact_defer_shift;
diff --git a/mm/compaction.c b/mm/compaction.c
index 478f6e754f38..38cdf392837b 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -136,7 +136,7 @@ void __ClearPageMovable(struct page *page)
/*
* Compaction is deferred when compaction fails to result in a page
- * allocation success. 1 << compact_defer_limit compactions are skipped up
+ * allocation success. compact_defer_shift++, compactions are skipped up
* to a limit of 1 << COMPACT_MAX_DEFER_SHIFT
*/
void defer_compaction(struct zone *zone, int order)
--
1.8.3.1
next prev parent reply other threads:[~2020-05-28 11:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-28 11:00 [PATCH v11 00/16] per memcg lru lock Alex Shi
2020-05-28 11:00 ` [PATCH v11 01/16] mm/vmscan: remove unnecessary lruvec adding Alex Shi
2020-05-28 11:00 ` [PATCH v11 02/16] mm/page_idle: no unlikely double check for idle page counting Alex Shi
2020-05-28 11:00 ` Alex Shi [this message]
2020-05-28 11:00 ` [PATCH v11 04/16] mm/compaction: rename compact_deferred as compact_should_defer Alex Shi
2020-05-28 11:00 ` [PATCH v11 05/16] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi
2020-05-28 11:00 ` [PATCH v11 06/16] mm/thp: clean up lru_add_page_tail Alex Shi
2020-05-28 11:00 ` [PATCH v11 07/16] mm/thp: narrow lru locking Alex Shi
2020-05-28 11:00 ` [PATCH v11 08/16] mm/memcg: add debug checking in lock_page_memcg Alex Shi
2020-05-28 11:00 ` [PATCH v11 09/16] mm/lru: introduce TestClearPageLRU Alex Shi
2020-05-28 11:00 ` [PATCH v11 10/16] mm/compaction: do page isolation first in compaction Alex Shi
2020-05-28 11:00 ` [PATCH v11 11/16] mm/mlock: reorder isolation sequence during munlock Alex Shi
2020-05-28 11:00 ` [PATCH v11 12/16] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi
2020-05-28 11:00 ` [PATCH v11 13/16] mm/lru: introduce the relock_page_lruvec function Alex Shi
2020-05-28 11:00 ` [PATCH v11 14/16] mm/vmscan: use relock for move_pages_to_lru Alex Shi
2020-05-28 11:00 ` [PATCH v11 15/16] mm/pgdat: remove pgdat lru_lock Alex Shi
2020-05-28 11:00 ` [PATCH v11 16/16] mm/lru: revise the comments of lru_lock Alex Shi
2020-06-08 4:15 ` [PATCH v11 00/16] per memcg lru lock Hugh Dickins
2020-06-08 6:13 ` Alex Shi
2020-06-10 3:22 ` Hugh Dickins
2020-06-11 6:06 ` Alex Shi
2020-06-11 22:09 ` Hugh Dickins
2020-06-12 10:43 ` Alex Shi
2020-06-16 6:14 ` Alex Shi
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