From: Julia Lawall <julia@diku.dk>
Date: Sun, 17 Oct 2010 19:55:21 +0000 (+0200)
Subject: fs/ceph/xattr.c: Use kmemdup
X-Git-Tag: v2.6.37-rc3~2^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=61413c2f594e6b63db2b14c70c2e7d8cf02f9c00;p=platform%2Fkernel%2Flinux-3.10.git

fs/ceph/xattr.c: Use kmemdup

Convert a sequence of kmalloc and memcpy to use kmemdup.

The semantic patch that performs this transformation is:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression a,flag,len;
expression arg,e1,e2;
statement S;
@@

  a =
-  \(kmalloc\|kzalloc\)(len,flag)
+  kmemdup(arg,len,flag)
  <... when != a
  if (a == NULL || ...) S
  ...>
- memcpy(a,arg,len+1);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 70e9199..6e12a6b 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -716,10 +716,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
 
 	/* preallocate memory for xattr name, value, index node */
 	err = -ENOMEM;
-	newname = kmalloc(name_len + 1, GFP_NOFS);
+	newname = kmemdup(name, name_len + 1, GFP_NOFS);
 	if (!newname)
 		goto out;
-	memcpy(newname, name, name_len + 1);
 
 	if (val_len) {
 		newval = kmalloc(val_len + 1, GFP_NOFS);