linux-kernel - [PATCH 07/16] mm/migration: use helper macro min_t in do_pages

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Date:   Fri, 4 Mar 2022 17:34:00 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <mike.kravetz@...cle.com>, <shy828301@...il.com>,
        <willy@...radead.org>, <ying.huang@...el.com>, <ziy@...dia.com>,
        <minchan@...nel.org>, <apopple@...dia.com>,
        <ave.hansen@...ux.intel.com>, <o451686892@...il.com>,
        <almasrymina@...gle.com>, <jhubbard@...dia.com>,
        <rcampbell@...dia.com>, <peterx@...hat.com>,
        <naoya.horiguchi@....com>, <mhocko@...e.com>, <riel@...hat.com>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 07/16] mm/migration: use helper macro min_t in do_pages_stat

We could use helper macro min_t to help set the chunk_nr to simplify
the code.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/migrate.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index bc79d7338780..c84eec19072a 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1858,9 +1858,7 @@ static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages,
 	while (nr_pages) {
 		unsigned long chunk_nr;
 
-		chunk_nr = nr_pages;
-		if (chunk_nr > DO_PAGES_STAT_CHUNK_NR)
-			chunk_nr = DO_PAGES_STAT_CHUNK_NR;
+		chunk_nr = min_t(unsigned long, nr_pages, DO_PAGES_STAT_CHUNK_NR);
 
 		if (in_compat_syscall()) {
 			if (get_compat_pages_array(chunk_pages, pages,
-- 
2.23.0