From: Baolin Wang <baolin.wang@linux.alibaba.com>
To: akpm@linux-foundation.org
Cc: baolin.wang@linux.alibaba.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/5] mm: migrate: Introduce a local variable to get the number of pages
Date: Thu, 5 Aug 2021 23:05:57 +0800 [thread overview]
Message-ID: <b06c1515a4520f8d8259c991320a44c54c56edfa.1628174413.git.baolin.wang@linux.alibaba.com> (raw)
In-Reply-To: <cover.1628174413.git.baolin.wang@linux.alibaba.com>
In-Reply-To: <cover.1628174413.git.baolin.wang@linux.alibaba.com>
Use thp_nr_pages() instead of compound_nr() to get the number of pages
for THP page, meanwhile introducing a local variable 'nr_pages' to
avoid getting the number of pages repeatedly.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
mm/migrate.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 5559571..eeba4c6 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2106,6 +2106,7 @@ static struct page *alloc_misplaced_dst_page_thp(struct page *page,
static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
{
int page_lru;
+ int nr_pages = thp_nr_pages(page);
VM_BUG_ON_PAGE(compound_order(page) && !PageTransHuge(page), page);
@@ -2114,7 +2115,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
return 0;
/* Avoid migrating to a node that is nearly full */
- if (!migrate_balanced_pgdat(pgdat, compound_nr(page)))
+ if (!migrate_balanced_pgdat(pgdat, nr_pages))
return 0;
if (isolate_lru_page(page))
@@ -2122,7 +2123,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
page_lru = page_is_file_lru(page);
mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru,
- thp_nr_pages(page));
+ nr_pages);
/*
* Isolating the page has taken another reference, so the
--
1.8.3.1
next prev parent reply other threads:[~2021-08-05 15:06 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 15:05 [PATCH 0/5] Some cleanup for page migration Baolin Wang
2021-08-05 15:05 ` [PATCH 1/5] mm: migrate: Move the page count validation to the proper place Baolin Wang
2021-08-05 15:17 ` Matthew Wilcox
2021-08-06 3:07 ` Baolin Wang
2021-08-07 2:02 ` Matthew Wilcox
2021-08-08 2:55 ` Baolin Wang
2021-08-08 10:26 ` Matthew Wilcox
2021-08-08 15:13 ` Baolin Wang
2021-08-08 16:01 ` Matthew Wilcox
2021-08-09 4:19 ` Baolin Wang
2021-08-05 15:05 ` Baolin Wang [this message]
2021-08-05 17:42 ` [PATCH 2/5] mm: migrate: Introduce a local variable to get the number of pages Yang Shi
2021-08-05 17:42 ` Yang Shi
2021-08-05 15:05 ` [PATCH 3/5] mm: migrate: Fix the incorrect function name in comments Baolin Wang
2021-08-05 17:26 ` Yang Shi
2021-08-05 17:26 ` Yang Shi
2021-08-09 13:59 ` Alistair Popple
2021-08-05 15:05 ` [PATCH 4/5] mm: migrate: Change to use bool type for 'page_was_mapped' Baolin Wang
2021-08-05 17:34 ` Yang Shi
2021-08-05 17:34 ` Yang Shi
2021-08-05 15:06 ` [PATCH 5/5] mm: migrate: Remove redundant goto labels Baolin Wang
2021-08-05 19:54 ` Yang Shi
2021-08-05 19:54 ` Yang Shi
2021-08-06 3:20 ` Baolin Wang
2021-08-06 17:17 ` Yang Shi
2021-08-06 17:17 ` Yang Shi
2021-08-08 2:56 ` Baolin Wang
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