ceph: make ceph_msg_new return NULL on failure; clean up, fix callers

Returning ERR_PTR(-ENOMEM) is useless extra work.  Return NULL on failure
instead, and fix up the callers (about half of which were wrong anyway).

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 834d2b83834a..b0426090e8c3 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -649,8 +649,8 @@ more:
                                     do_sync,
                                     ci->i_truncate_seq, ci->i_truncate_size,
                                     &mtime, false, 2);
-        if (IS_ERR(req))
-                return PTR_ERR(req);
+        if (!req)
+                return -ENOMEM;
 
         num_pages = calc_pages_for(pos, len);