commit b8d0638a98aa4a42ff322234b882487cd74e5c52
author Dan Carpenter <error27@gmail.com> Mon Oct 11 21:14:23 2010 +0200
committer Sage Weil <sage@newdream.net> Wed Oct 20 15:38:24 2010 -0700
tree 4ab89ab0a293d404466106dd6bced5d68c171ce1
parent 240634e9b3a8ae2a9e2b7effeea3b9a5b30d68fb

rbd: null vs ERR_PTR

ceph_alloc_page_vector() returns ERR_PTR(-ENOMEM) on errors.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>

drivers/block/rbd.c

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 1ac87f1..52f9420 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -826,8 +826,8 @@
 
 	num_pages = calc_pages_for(ofs , len);
 	pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL);
-	if (!pages)
-		return -ENOMEM;
+	if (IS_ERR(pages))
+		return PTR_ERR(pages);
 
 	if (!orig_ops) {
 		payload_len = (flags & CEPH_OSD_FLAG_WRITE ? len : 0);