libceph: grab snapc in ceph_osdc_alloc_request()

ceph_osdc_build_request() is going away.  Grab snapc and initialize
->r_snapid in ceph_osdc_alloc_request().

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index cacce9e35f08fa18e74fc76bbcc38ecab5bb0181..ccb9539dc7809612cd5ad30fdf7dc103efc2abe2 100644 (file)
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -391,6 +391,8 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
        req->r_osdc = osdc;
        req->r_mempool = use_mempool;
        req->r_num_ops = num_ops;
+       req->r_snapid = CEPH_NOSNAP;
+       req->r_snapc = ceph_get_snap_context(snapc);
 
        kref_init(&req->r_kref);
        init_completion(&req->r_completion);
@@ -2457,7 +2459,7 @@ void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
        unsigned int i;
 
        req->r_snapid = snap_id;
-       req->r_snapc = ceph_get_snap_context(snapc);
+       WARN_ON(snapc != req->r_snapc);
 
        /* encode request */
        msg->hdr.version = cpu_to_le16(4);
@@ -2508,7 +2510,7 @@ void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
        ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0);
        ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0);
        if (req->r_snapc) {
-               for (i = 0; i < snapc->num_snaps; i++) {
+               for (i = 0; i < req->r_snapc->num_snaps; i++) {
                        ceph_encode_64(&p, req->r_snapc->snaps[i]);
                }
        }