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From:   Muchun Song <songmuchun@bytedance.com>
To:     gregkh@linuxfoundation.org, rafael@kernel.org, adobriyan@gmail.com,
        akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org,
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Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-mm@kvack.org, cgroups@vger.kernel.org,
        Muchun Song <songmuchun@bytedance.com>
Subject: [RESEND PATCH v2 06/12] mm: memcontrol: convert NR_FILE_PMDMAPPED account to pages
Date:   Sun,  6 Dec 2020 18:14:45 +0800
Message-Id: <20201206101451.14706-7-songmuchun@bytedance.com>
In-Reply-To: <20201206101451.14706-1-songmuchun@bytedance.com>
References: <20201206101451.14706-1-songmuchun@bytedance.com>
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Convert NR_FILE_PMDMAPPED account to pages

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
 drivers/base/node.c | 3 +--
 fs/proc/meminfo.c   | 2 +-
 mm/rmap.c           | 6 ++++--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index e5abc6144dab..f77652e6339f 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -465,8 +465,7 @@ static ssize_t node_read_meminfo(struct device *dev,
 			     nid, K(node_page_state(pgdat, NR_SHMEM_THPS)),
 			     nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED)),
 			     nid, K(node_page_state(pgdat, NR_FILE_THPS)),
-			     nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED) *
-				    HPAGE_PMD_NR)
+			     nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED))
 #endif
 			    );
 	len += hugetlb_report_node_meminfo(buf, len, nid);
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 84886b2cc2f7..5a83012d8b72 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -137,7 +137,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 	show_val_kb(m, "FileHugePages:  ",
 		    global_node_page_state(NR_FILE_THPS));
 	show_val_kb(m, "FilePmdMapped:  ",
-		    global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR);
+		    global_node_page_state(NR_FILE_PMDMAPPED));
 #endif
 
 #ifdef CONFIG_CMA
diff --git a/mm/rmap.c b/mm/rmap.c
index 3089ad6bf468..e383c5619501 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1222,7 +1222,8 @@ void page_add_file_rmap(struct page *page, bool compound)
 			__mod_lruvec_page_state(page, NR_SHMEM_PMDMAPPED,
 						HPAGE_PMD_NR);
 		else
-			__inc_node_page_state(page, NR_FILE_PMDMAPPED);
+			__mod_lruvec_page_state(page, NR_FILE_PMDMAPPED,
+						HPAGE_PMD_NR);
 	} else {
 		if (PageTransCompound(page) && page_mapping(page)) {
 			VM_WARN_ON_ONCE(!PageLocked(page));
@@ -1264,7 +1265,8 @@ static void page_remove_file_rmap(struct page *page, bool compound)
 			__mod_lruvec_page_state(page, NR_SHMEM_PMDMAPPED,
 						-HPAGE_PMD_NR);
 		else
-			__dec_node_page_state(page, NR_FILE_PMDMAPPED);
+			__mod_lruvec_page_state(page, NR_FILE_PMDMAPPED,
+						-HPAGE_PMD_NR);
 	} else {
 		if (!atomic_add_negative(-1, &page->_mapcount))
 			return;
-- 
2.11.0