Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   john.hubbard@gmail.com
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     Alexander Viro <viro@zeniv.linux.org.uk>,
        =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn.topel@intel.com>,
        Boaz Harrosh <boaz@plexistor.com>,
        Christoph Hellwig <hch@lst.de>,
        Daniel Vetter <daniel@ffwll.ch>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Chinner <david@fromorbit.com>,
        David Airlie <airlied@linux.ie>,
        "David S . Miller" <davem@davemloft.net>,
        Ilya Dryomov <idryomov@gmail.com>, Jan Kara <jack@suse.cz>,
        Jason Gunthorpe <jgg@ziepe.ca>, Jens Axboe <axboe@kernel.dk>,
        =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= <jglisse@redhat.com>,
        Johannes Thumshirn <jthumshirn@suse.de>,
        Magnus Karlsson <magnus.karlsson@intel.com>,
        Matthew Wilcox <willy@infradead.org>,
        Miklos Szeredi <miklos@szeredi.hu>,
        Ming Lei <ming.lei@redhat.com>, Sage Weil <sage@redhat.com>,
        Santosh Shilimkar <santosh.shilimkar@oracle.com>,
        Yan Zheng <zyan@redhat.com>, netdev@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linux-mm@kvack.org,
        linux-rdma@vger.kernel.org, bpf@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        John Hubbard <jhubbard@nvidia.com>
Subject: [PATCH v6 3/3] net/xdp: convert put_page() to put_user_page*()
Date:   Sun,  4 Aug 2019 14:40:42 -0700
Message-Id: <20190804214042.4564-4-jhubbard@nvidia.com>
In-Reply-To: <20190804214042.4564-1-jhubbard@nvidia.com>
References: <20190804214042.4564-1-jhubbard@nvidia.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: John Hubbard <jhubbard@nvidia.com>

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").

Acked-by: Björn Töpel <bjorn.topel@intel.com>
Cc: Magnus Karlsson <magnus.karlsson@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 net/xdp/xdp_umem.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
index 83de74ca729a..17c4b3d3dc34 100644
--- a/net/xdp/xdp_umem.c
+++ b/net/xdp/xdp_umem.c
@@ -166,14 +166,7 @@ void xdp_umem_clear_dev(struct xdp_umem *umem)
 
 static void xdp_umem_unpin_pages(struct xdp_umem *umem)
 {
-	unsigned int i;
-
-	for (i = 0; i < umem->npgs; i++) {
-		struct page *page = umem->pgs[i];
-
-		set_page_dirty_lock(page);
-		put_page(page);
-	}
+	put_user_pages_dirty_lock(umem->pgs, umem->npgs, true);
 
 	kfree(umem->pgs);
 	umem->pgs = NULL;
-- 
2.22.0