linux-kernel - [PATCH 2/4] mm: workingset: use cheaper __inc_lruvec

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Message-Id: <20181009184732.762-3-hannes@cmpxchg.org>
Date:   Tue,  9 Oct 2018 14:47:31 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Rik van Riel <riel@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: [PATCH 2/4] mm: workingset: use cheaper __inc_lruvec_state in irqsafe node reclaim

No need to use the preemption-safe lruvec state function inside the
reclaim region that has irqs disabled.

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 mm/workingset.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/workingset.c b/mm/workingset.c
index e5c70bc94077..f564aaa6b71d 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -493,7 +493,7 @@ static enum lru_status shadow_lru_isolate(struct list_head *item,
 	 * shadow entries we were tracking ...
 	 */
 	xas_store(&xas, NULL);
-	inc_lruvec_page_state(virt_to_page(node), WORKINGSET_NODERECLAIM);
+	__inc_lruvec_page_state(virt_to_page(node), WORKINGSET_NODERECLAIM);
 
 out_invalid:
 	xa_unlock_irq(&mapping->i_pages);
-- 
2.19.0