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authorAlex Elder <elder@inktank.com>2013-02-14 12:16:43 -0600
committerSage Weil <sage@inktank.com>2013-05-01 21:16:38 -0700
commit02afca6ca00b7972887c5cc77068356f33bdfc18 (patch)
treea335532b314d8da309bb7313cc84ae973d3f5ab0 /fs/ceph
parente0c594878e3211b09208c779df5f996f0b831d9e (diff)
libceph: isolate message page field manipulation
Define a function ceph_msg_data_set_pages(), which more clearly abstracts the assignment page-related fields for data in a ceph message structure. Use this new function in the osd client and mds client. Ideally, these fields would never be set more than once (with BUG_ON() calls to guarantee that). At the moment though the osd client sets these every time it receives a message, and in the event of a communication problem this can happen more than once. (This will be resolved shortly, but setting up these helpers first makes it all a bit easier to work with.) Rearrange the field order in a ceph_msg structure to group those that are used to define the possible data payloads. This partially resolves: http://tracker.ceph.com/issues/4263 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/mds_client.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index ecfb738bca3..90198a40702 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1721,8 +1721,8 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
- msg->pages = req->r_pages;
- msg->page_count = req->r_num_pages;
+ ceph_msg_data_set_pages(msg, req->r_pages, req->r_num_pages, 0);
+
msg->hdr.data_len = cpu_to_le32(req->r_data_len);
msg->hdr.data_off = cpu_to_le16(0);