From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Yan, Zheng" , Jeff Layton Subject: [PATCH 4.10 167/167] ceph: update readpages osd request according to size of pages Date: Fri, 10 Mar 2017 10:10:10 +0100 Message-Id: <20170310084005.589174137@linuxfoundation.org> In-Reply-To: <20170310083956.767605269@linuxfoundation.org> References: <20170310083956.767605269@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yan, Zheng commit d641df819db8b80198fd85d9de91137e8a823b07 upstream. add_to_page_cache_lru() can fails, so the actual pages to read can be smaller than the initial size of osd request. We need to update osd request size in that case. Signed-off-by: Yan, Zheng Reviewed-by: Jeff Layton Signed-off-by: Greg Kroah-Hartman --- fs/ceph/addr.c | 1 + net/ceph/osd_client.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -391,6 +391,7 @@ static int start_read(struct inode *inod nr_pages = i; if (nr_pages > 0) { len = nr_pages << PAGE_SHIFT; + osd_req_op_extent_update(req, 0, len); break; } goto out_pages; --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -672,7 +672,8 @@ void osd_req_op_extent_update(struct cep BUG_ON(length > previous); op->extent.length = length; - op->indata_len -= previous - length; + if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) + op->indata_len -= previous - length; } EXPORT_SYMBOL(osd_req_op_extent_update);