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From: Alex Shi <alex.shi@linux.alibaba.com>
To: cgroups@vger.kernel.org, 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
Cc: Alex Shi <alex.shi@linux.alibaba.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH v9 05/20] mm/thp: clean up lru_add_page_tail
Date: Mon,  2 Mar 2020 19:00:15 +0800	[thread overview]
Message-ID: <1583146830-169516-6-git-send-email-alex.shi@linux.alibaba.com> (raw)
In-Reply-To: <1583146830-169516-1-git-send-email-alex.shi@linux.alibaba.com>

Since the first parameter is only used by head page, it's better to make
it stright. And no needs to keep head checking:
	VM_BUG_ON_PAGE(!PageHead(page), page);

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
 mm/huge_memory.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index acef164a8981..599367d25fca 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2445,21 +2445,20 @@ static void remap_page(struct page *page)
 	}
 }
 
-void lru_add_page_tail(struct page *page, struct page *page_tail,
+void lru_add_page_tail(struct page *head, struct page *page_tail,
 		       struct lruvec *lruvec, struct list_head *list)
 {
 	const int file = 0;
 
-	VM_BUG_ON_PAGE(!PageHead(page), page);
-	VM_BUG_ON_PAGE(PageCompound(page_tail), page);
-	VM_BUG_ON_PAGE(PageLRU(page_tail), page);
+	VM_BUG_ON_PAGE(PageCompound(page_tail), head);
+	VM_BUG_ON_PAGE(PageLRU(page_tail), head);
 	lockdep_assert_held(&lruvec_pgdat(lruvec)->lru_lock);
 
 	if (!list)
 		SetPageLRU(page_tail);
 
-	if (likely(PageLRU(page)))
-		list_add_tail(&page_tail->lru, &page->lru);
+	if (likely(PageLRU(head)))
+		list_add_tail(&page_tail->lru, &head->lru);
 	else if (list) {
 		/* page reclaim is reclaiming a huge page */
 		get_page(page_tail);
@@ -2476,7 +2475,7 @@ void lru_add_page_tail(struct page *page, struct page *page_tail,
 					  page_lru(page_tail));
 	}
 
-	if (!PageUnevictable(page))
+	if (!PageUnevictable(head))
 		update_page_reclaim_stat(lruvec, file, PageActive(page_tail));
 }
 
-- 
1.8.3.1



  parent reply	other threads:[~2020-03-02 11:01 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1583146830-169516-1-git-send-email-alex.shi@linux.alibaba.com>
2020-03-02 11:00 ` [PATCH v9 01/20] mm/vmscan: remove unnecessary lruvec adding Alex Shi
2020-03-02 11:00 ` [PATCH v9 02/20] mm/memcg: fold lock_page_lru into commit_charge Alex Shi
2020-03-02 11:00 ` [PATCH v9 03/20] mm/page_idle: no unlikely double check for idle page counting Alex Shi
2020-03-02 11:00 ` [PATCH v9 04/20] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi
2020-03-04  7:47   ` Kirill A. Shutemov
2020-03-04  8:13     ` Alex Shi
2020-03-02 11:00 ` Alex Shi [this message]
2020-03-02 11:00 ` [PATCH v9 06/20] mm/thp: narrow lru locking Alex Shi
2020-03-04  8:02   ` Kirill A. Shutemov
2020-03-04  8:51     ` Alex Shi
2020-03-02 11:00 ` [PATCH v9 07/20] mm/lru: introduce TestClearPageLRU Alex Shi
2020-03-02 22:11   ` Andrew Morton
2020-03-03  4:11     ` Alex Shi
2020-03-04  0:46       ` Andrew Morton
2020-03-04  7:06         ` Alex Shi
2020-03-04  9:03           ` Rong Chen
2020-03-04  9:37             ` Alex Shi
2020-03-02 11:00 ` [PATCH v9 08/20] mm/lru: add page isolation precondition in __isolate_lru_page Alex Shi
2020-03-02 11:00 ` [PATCH v9 09/20] mm/mlock: ClearPageLRU before get lru lock in munlock page isolation Alex Shi
2020-03-02 11:00 ` [PATCH v9 10/20] mm/lru: take PageLRU first in moving page between lru lists Alex Shi
2020-03-02 11:00 ` [PATCH v9 11/20] mm/memcg: move SetPageLRU out of lru_lock in commit_charge Alex Shi
2020-03-02 11:00 ` [PATCH v9 12/20] mm/mlock: clean up __munlock_isolate_lru_page Alex Shi
2020-03-02 11:00 ` [PATCH v9 13/20] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 14/20] mm/lru: introduce the relock_page_lruvec function Alex Shi
2020-03-02 11:00 ` [PATCH v9 15/20] mm/mlock: optimize munlock_pagevec by relocking Alex Shi
2020-03-02 11:00 ` [PATCH v9 16/20] mm/swap: only change the lru_lock iff page's lruvec is different Alex Shi
2020-03-02 11:00 ` [PATCH v9 17/20] mm/pgdat: remove pgdat lru_lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 18/20] mm/lru: revise the comments of lru_lock Alex Shi
2020-03-02 11:00 ` [PATCH v9 19/20] mm/lru: add debug checking for page memcg moving Alex Shi
2020-03-02 11:00 ` [PATCH v9 20/20] mm/memcg: add debug checking in lock_page_memcg Alex Shi
2020-03-04  3:13 ` [PATCH v9 02/20] mm/memcg: fold lock_page_lru into commit_charge Hillf Danton
2020-03-04  7:19   ` Alex Shi

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