libceph: don't set flags in ceph_osdc_alloc_request()

The only thing ceph_osdc_alloc_request() really does with the
flags value it is passed is assign it to the newly-created
osd request structure.  Do that in the caller instead.

Both callers subsequently call ceph_osdc_build_request(), so have
that function (instead of ceph_osdc_alloc_request()) issue a warning
if a request comes through with neither the read nor write flags set.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

3 files changed, 6 insertions, 9 deletions

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index ac8fd3856509..bdbaa4cfd9d3 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1148,13 +1148,14 @@ static int rbd_do_request(struct request *rq,
                 (unsigned long long) len, coll, coll_index);
 
         osdc = &rbd_dev->rbd_client->client->osdc;
-        osd_req = ceph_osdc_alloc_request(osdc, flags, snapc, ops,
+        osd_req = ceph_osdc_alloc_request(osdc, snapc, ops,
                                         false, GFP_NOIO, pages, bio);
         if (!osd_req) {
                 ret = -ENOMEM;
                 goto done_pages;
         }
 
+        osd_req->r_flags = flags;
         osd_req->r_callback = rbd_cb;
 
         rbd_req->rq = rq;
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index fe3a6e8db1f9..6ddda5bbd1a6 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -213,7 +213,6 @@ extern int ceph_calc_raw_layout(struct ceph_file_layout *layout,
                         struct ceph_osd_req_op *op);
 
 extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
-                                               int flags,
                                                struct ceph_snap_context *snapc,
                                                struct ceph_osd_req_op *ops,
                                                bool use_mempool,
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index cd9c28387de3..77ce1edaa07d 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -171,7 +171,6 @@ static int get_num_ops(struct ceph_osd_req_op *ops)
 }
 
 struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
-                                               int flags,
                                                struct ceph_snap_context *snapc,
                                                struct ceph_osd_req_op *ops,
                                                bool use_mempool,
@@ -208,10 +207,6 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
         INIT_LIST_HEAD(&req->r_req_lru_item);
         INIT_LIST_HEAD(&req->r_osd_item);
 
-        req->r_flags = flags;
-
-        WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
-
         /* create reply message */
         if (use_mempool)
                 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
@@ -347,6 +342,8 @@ void ceph_osdc_build_request(struct ceph_osd_request *req,
         u64 data_len = 0;
         int i;
 
+        WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
+
         head = msg->front.iov_base;
         head->snapid = cpu_to_le64(snap_id);
         op = (void *)(head + 1);
@@ -442,12 +439,12 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
         } else
                 ops[1].op = 0;
 
-        req = ceph_osdc_alloc_request(osdc, flags,
-                                         snapc, ops,
+        req = ceph_osdc_alloc_request(osdc, snapc, ops,
                                          use_mempool,
                                          GFP_NOFS, NULL, NULL);
         if (!req)
                 return ERR_PTR(-ENOMEM);
+        req->r_flags = flags;
 
         /* calculate max write size */
         r = calc_layout(vino, layout, off, plen, req, ops);