From mboxrd@z Thu Jan 1 00:00:00 1970 From: jglisse@redhat.com Subject: [PATCH v1 15/15] ceph: use put_user_pages() instead of ceph_put_page_vector() Date: Thu, 11 Apr 2019 17:08:34 -0400 Message-ID: <20190411210834.4105-16-jglisse@redhat.com> References: <20190411210834.4105-1-jglisse@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190411210834.4105-1-jglisse@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-mm@kvack.org, John Hubbard , Jan Kara , Dan Williams , Alexander Viro , Johannes Thumshirn , Christoph Hellwig , Jens Axboe , Ming Lei , Dave Chinner , Jason Gunthorpe , Matthew Wilcox , Yan Zheng , Sage Weil , Ilya Dryomov , ceph-devel@vger.kernel.org List-Id: ceph-devel.vger.kernel.org From: Jérôme Glisse When page reference were taken through GUP (get_user_page*()) we need to drop them with put_user_pages(). Signed-off-by: Jérôme Glisse Cc: linux-fsdevel@vger.kernel.org Cc: linux-block@vger.kernel.org Cc: linux-mm@kvack.org Cc: John Hubbard Cc: Jan Kara Cc: Dan Williams Cc: Alexander Viro Cc: Johannes Thumshirn Cc: Christoph Hellwig Cc: Jens Axboe Cc: Ming Lei Cc: Dave Chinner Cc: Jason Gunthorpe Cc: Matthew Wilcox Cc: Yan Zheng Cc: Sage Weil Cc: Ilya Dryomov Cc: ceph-devel@vger.kernel.org --- fs/ceph/file.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 6c5b85f01721..5842ad3a4218 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -667,7 +667,8 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to, } else { iov_iter_advance(to, 0); } - ceph_put_page_vector(pages, num_pages, false); + /* iov_iter_get_pages_alloc() did call GUP */ + put_user_pages(pages, num_pages); } else { int idx = 0; size_t left = ret > 0 ? ret : 0; -- 2.20.1