libceph: hold off building osd request
Defer building the osd request until just before submitting it in
all callers except ceph_writepages_start(). (That caller will be
handed in the next patch.)
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 7b6d9b2..0a3d2ce 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -319,8 +319,6 @@
if (IS_ERR(req))
return PTR_ERR(req);
- ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL);
-
/* build page vector */
nr_pages = calc_pages_for(0, len);
pages = kmalloc(sizeof(*pages) * nr_pages, GFP_NOFS);
@@ -351,6 +349,8 @@
req->r_callback = finish_read;
req->r_inode = inode;
+ ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL);
+
dout("start_read %p starting %p %lld~%lld\n", inode, req, off, len);
ret = ceph_osdc_start_request(osdc, req, false);
if (ret < 0)