linux-kernel - [RFC PATCH] mm/gup: try_pin_compound

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Date:   Tue, 17 Dec 2019 16:03:58 +0800
From:   kbuild test robot <lkp@...el.com>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     kbuild-all@...ts.01.org, Andrew Morton <akpm@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Alex Williamson <alex.williamson@...hat.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Björn Töpel <bjorn.topel@...el.com>,
        Christoph Hellwig <hch@...radead.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Dave Chinner <david@...morbit.com>,
        David Airlie <airlied@...ux.ie>,
        "David S . Miller" <davem@...emloft.net>,
        Ira Weiny <ira.weiny@...el.com>, Jan Kara <jack@...e.cz>,
        Jason Gunthorpe <jgg@...pe.ca>, Jens Axboe <axboe@...nel.dk>,
        Jonathan Corbet <corbet@....net>,
        Jérôme Glisse <jglisse@...hat.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Michal Hocko <mhocko@...e.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Paul Mackerras <paulus@...ba.org>,
        Shuah Khan <shuah@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>, bpf@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, kvm@...r.kernel.org,
        linux-block@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-media@...r.kernel.org, linux-rdma@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org,
        linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
        John Hubbard <jhubbard@...dia.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [RFC PATCH] mm/gup: try_pin_compound_head() can be static


Fixes: 8086d1c61970 ("mm/gup: track FOLL_PIN pages")
Signed-off-by: kbuild test robot <lkp@...el.com>
---
 gup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 038b71165a761..849a6f55938e6 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -75,7 +75,7 @@ static inline struct page *try_get_compound_head(struct page *page, int refs)
  * @Return:	the compound head page, with ref appropriately incremented,
  * or NULL upon failure.
  */
-__must_check struct page *try_pin_compound_head(struct page *page, int refs)
+static __must_check struct page *try_pin_compound_head(struct page *page, int refs)
 {
 	struct page *head = try_get_compound_head(page,
 						  GUP_PIN_COUNTING_BIAS * refs);