From: Dan Carpenter <error27@gmail.com>
Date: Mon, 11 Oct 2010 19:14:23 +0000 (+0200)
Subject: rbd: null vs ERR_PTR
X-Git-Tag: v3.0~2770^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8d0638a98aa4a42ff322234b882487cd74e5c52;p=platform%2Fkernel%2Flinux-amlogic.git

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>
---

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 @@ static int rbd_req_sync_op(struct rbd_device *dev,
 
 	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);