linux-kernel - [PATCH v5 1/3] proc/meminfo: avoid open coded reading of vm_committed

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Message-Id: <1592725000-73486-2-git-send-email-feng.tang@intel.com>
Date:   Sun, 21 Jun 2020 15:36:38 +0800
From:   Feng Tang <feng.tang@...el.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Matthew Wilcox <willy@...radead.org>,
        Mel Gorman <mgorman@...e.de>,
        Kees Cook <keescook@...omium.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Iurii Zaikin <yzaikin@...gle.com>, andi.kleen@...el.com,
        tim.c.chen@...el.com, dave.hansen@...el.com, ying.huang@...el.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Feng Tang <feng.tang@...el.com>
Subject: [PATCH v5 1/3] proc/meminfo: avoid open coded reading of vm_committed_as

Use the existing vm_memory_committed() instead, which is also
convenient for future change.

Signed-off-by: Feng Tang <feng.tang@...el.com>
Acked-by: Michal Hocko <mhocko@...e.com>
Cc: Matthew Wilcox (Oracle) <willy@...radead.org>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Kees Cook <keescook@...omium.org>
Cc: Andi Kleen <andi.kleen@...el.com>
Cc: Tim Chen <tim.c.chen@...el.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Huang Ying <ying.huang@...el.com>
---
 fs/proc/meminfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 38ea95f..f262bff 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -41,7 +41,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 
 	si_meminfo(&i);
 	si_swapinfo(&i);
-	committed = percpu_counter_read_positive(&vm_committed_as);
+	committed = vm_memory_committed();
 
 	cached = global_node_page_state(NR_FILE_PAGES) -
 			total_swapcache_pages() - i.bufferram;
-- 
2.7.4