From d641df819db8b80198fd85d9de91137e8a823b07 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Thu, 19 Jan 2017 11:21:29 +0800 Subject: [PATCH] ceph: update readpages osd request according to size of pages 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 --- fs/ceph/addr.c | 1 + net/ceph/osd_client.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 39852567d66e..4547bbf80e4f 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -391,6 +391,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) nr_pages = i; if (nr_pages > 0) { len = nr_pages << PAGE_SHIFT; + osd_req_op_extent_update(req, 0, len); break; } goto out_pages; diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 842f049abb86..3a2417bb6ff0 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -672,7 +672,8 @@ void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 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); -- 2.20.1