linux-kernel - [Linux-kernel-mentees][PATCH v6 1/2] sgi-gru: Convert put_page() to put_user

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Date:   Mon, 19 Aug 2019 01:08:54 +0530
From:   Bharath Vedartham <linux.bhar@...il.com>
To:     sivanich@....com, jhubbard@...dia.com
Cc:     jglisse@...hat.com, ira.weiny@...el.com,
        gregkh@...uxfoundation.org, arnd@...db.de,
        william.kucharski@...cle.com, hch@....de,
        inux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Bharath Vedartham <linux.bhar@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [Linux-kernel-mentees][PATCH v6 1/2] sgi-gru: Convert put_page() to put_user_page*()

For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().

This is part a tree-wide conversion, as described in commit fc1d8e7cca2d
("mm: introduce put_user_page*(), placeholder versions").

Cc: Ira Weiny <ira.weiny@...el.com>
Cc: John Hubbard <jhubbard@...dia.com>
Cc: Jérôme Glisse <jglisse@...hat.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Dimitri Sivanich <sivanich@....com>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: William Kucharski <william.kucharski@...cle.com>
Cc: Christoph Hellwig <hch@....de>
Cc: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org
Cc: linux-kernel-mentees@...ts.linuxfoundation.org
Reviewed-by: Ira Weiny <ira.weiny@...el.com>
Reviewed-by: John Hubbard <jhubbard@...dia.com>
Reviewed-by: William Kucharski <william.kucharski@...cle.com>
Signed-off-by: Bharath Vedartham <linux.bhar@...il.com>
---
 drivers/misc/sgi-gru/grufault.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 4b713a8..61b3447 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -188,7 +188,7 @@ static int non_atomic_pte_lookup(struct vm_area_struct *vma,
 	if (get_user_pages(vaddr, 1, write ? FOLL_WRITE : 0, &page, NULL) <= 0)
 		return -EFAULT;
 	*paddr = page_to_phys(page);
-	put_page(page);
+	put_user_page(page);
 	return 0;
 }
 
-- 
2.7.4