From: Jianpeng Ma <majianpeng@gmail.com>
Date: Mon, 24 Sep 2012 07:08:35 +0000 (+1000)
Subject: md/bitmap:Don't use IS_ERR to judge alloc_page().
X-Git-Tag: next-20120926~52^2~10
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=50e899bb41b618b62c5b880cd897c75b104e8179;p=karo-tx-linux.git

md/bitmap:Don't use IS_ERR to judge alloc_page().

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index df73375c160a..7155945f8eb8 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -470,14 +470,10 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
 {
 	bitmap_super_t *sb;
 	unsigned long chunksize, daemon_sleep, write_behind;
-	int err = -EINVAL;
 
 	bitmap->storage.sb_page = alloc_page(GFP_KERNEL);
-	if (IS_ERR(bitmap->storage.sb_page)) {
-		err = PTR_ERR(bitmap->storage.sb_page);
-		bitmap->storage.sb_page = NULL;
-		return err;
-	}
+	if (bitmap->storage.sb_page == NULL)
+		return -ENOMEM;
 	bitmap->storage.sb_page->index = 0;
 
 	sb = kmap_atomic(bitmap->storage.sb_page);