From: Christoph Hellwig <hch@lst.de>
Date: Fri, 12 Jul 2019 03:57:36 +0000 (-0700)
Subject: mm: mark the page referenced in gup_hugepte
X-Git-Tag: v5.3-rc1~120^2~49
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=520b4a4496f12b117b94f3ac7c493651881c5fe3;p=users%2Fjedix%2Flinux-maple.git

mm: mark the page referenced in gup_hugepte

All other get_user_page_fast cases mark the page referenced, so do this
here as well.

Link: http://lkml.kernel.org/r/20190625143715.1689-17-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Miller <davem@davemloft.net>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/gup.c b/mm/gup.c
index 7763abd16405..83d480e9b05f 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2020,6 +2020,7 @@ static int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr,
 		return 0;
 	}
 
+	SetPageReferenced(head);
 	return 1;
 }