From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id E2AA36B0033 for ; Tue, 7 Feb 2017 14:11:27 -0500 (EST) Received: by mail-pf0-f199.google.com with SMTP id y143so161626256pfb.6 for ; Tue, 07 Feb 2017 11:11:27 -0800 (PST) Received: from mail-pg0-x229.google.com (mail-pg0-x229.google.com. [2607:f8b0:400e:c05::229]) by mx.google.com with ESMTPS id c21si4883626pfd.231.2017.02.07.11.11.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 07 Feb 2017 11:11:27 -0800 (PST) Received: by mail-pg0-x229.google.com with SMTP id v184so41035197pgv.3 for ; Tue, 07 Feb 2017 11:11:27 -0800 (PST) Date: Tue, 7 Feb 2017 11:11:16 -0800 (PST) From: Hugh Dickins Subject: [PATCH] mm: fix KPF_SWAPCACHE Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds Cc: Andrew Morton , Nicholas Piggin , Wu Fengguang , linux-kernel@vger.kernel.org, linux-mm@kvack.org 4.10-rc1 commit 6326fec1122c ("mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked") aliased PG_swapcache to PG_owner_priv_1: so /proc/kpageflags' KPF_SWAPCACHE should now be synthesized, instead of being shown on unrelated pages which have PG_owner_priv_1 set. Signed-off-by: Hugh Dickins --- fs/proc/page.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- 4.10-rc7/fs/proc/page.c 2016-12-25 18:40:50.618454962 -0800 +++ linux/fs/proc/page.c 2017-02-07 10:28:51.019640392 -0800 @@ -173,7 +173,8 @@ u64 stable_page_flags(struct page *page) u |= kpf_copy_bit(k, KPF_ACTIVE, PG_active); u |= kpf_copy_bit(k, KPF_RECLAIM, PG_reclaim); - u |= kpf_copy_bit(k, KPF_SWAPCACHE, PG_swapcache); + if (PageSwapCache(page)) + u |= 1 << KPF_SWAPCACHE; u |= kpf_copy_bit(k, KPF_SWAPBACKED, PG_swapbacked); u |= kpf_copy_bit(k, KPF_UNEVICTABLE, PG_unevictable); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org