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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-mm@kvack.org
Cc: tglx@linutronix.de, Vladimir Davydov <vdavydov.dev@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH 1/4] mm/list_lru: use list_lru_walk_one() in list_lru_walk_node()
Date: Mon, 16 Jul 2018 13:19:18 +0200	[thread overview]
Message-ID: <20180716111921.5365-2-bigeasy@linutronix.de> (raw)
In-Reply-To: <20180716111921.5365-1-bigeasy@linutronix.de>

list_lru_walk_node() invokes __list_lru_walk_one() with -1 as the
memcg_idx parameter. The same can be achieved by list_lru_walk_one() and
passing NULL as memcg argument which then gets converted into -1. This
is a preparation step when the spin_lock() function is lifted to the
caller of __list_lru_walk_one().
Invoke list_lru_walk_one() instead __list_lru_walk_one() when possible.

Reviewed-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 mm/list_lru.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/list_lru.c b/mm/list_lru.c
index ca6dbcfe4256..344306714636 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -294,8 +294,8 @@ unsigned long list_lru_walk_node(struct list_lru *lru, int nid,
 	long isolated = 0;
 	int memcg_idx;
 
-	isolated += __list_lru_walk_one(lru, nid, -1, isolate, cb_arg,
-					nr_to_walk);
+	isolated += list_lru_walk_one(lru, nid, NULL, isolate, cb_arg,
+				      nr_to_walk);
 	if (*nr_to_walk > 0 && list_lru_memcg_aware(lru)) {
 		for_each_memcg_cache_index(memcg_idx) {
 			isolated += __list_lru_walk_one(lru, nid, memcg_idx,
-- 
2.18.0

  reply	other threads:[~2018-07-16 11:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-16 11:19 [PATCH 0/4] mm/list_lru: Add list_lru_shrink_walk_irq() and a user Sebastian Andrzej Siewior
2018-07-16 11:19 ` Sebastian Andrzej Siewior [this message]
2018-07-16 11:19 ` [PATCH 2/4] mm/list_lru: Move locking from __list_lru_walk_one() to its caller Sebastian Andrzej Siewior
2018-07-16 11:19 ` [PATCH 3/4] mm/list_lru: Pass struct list_lru_node as an argument __list_lru_walk_one() Sebastian Andrzej Siewior
2018-07-16 11:19 ` [PATCH 4/4] mm/list_lru: Introduce list_lru_shrink_walk_irq() Sebastian Andrzej Siewior
  -- strict thread matches above, loose matches on Subject: below --
2018-06-24 20:09 [PATCH 3/3] mm: list_lru: Add lock_irq member to __list_lru_init() Vladimir Davydov
2018-07-03 14:52 ` Sebastian Andrzej Siewior
2018-07-03 14:52   ` [PATCH 1/4] mm/list_lru: use list_lru_walk_one() in list_lru_walk_node() Sebastian Andrzej Siewior

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