UBIFS: use kmemdup rather than duplicating its implementation

The patch was generated using fixed coccinelle semantic patch
scripts/coccinelle/api/memdup.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2014320

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

2 files changed, 3 insertions, 6 deletions

diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index dc9f27e9d61b..9a517109da0f 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1498,11 +1498,10 @@ static struct ubifs_nnode *dirty_cow_nnode(struct ubifs_info *c,
         }
 
         /* nnode is being committed, so copy it */
-        n = kmalloc(sizeof(struct ubifs_nnode), GFP_NOFS);
+        n = kmemdup(nnode, sizeof(struct ubifs_nnode), GFP_NOFS);
         if (unlikely(!n))
                 return ERR_PTR(-ENOMEM);
 
-        memcpy(n, nnode, sizeof(struct ubifs_nnode));
         n->cnext = NULL;
         __set_bit(DIRTY_CNODE, &n->flags);
         __clear_bit(COW_CNODE, &n->flags);
@@ -1549,11 +1548,10 @@ static struct ubifs_pnode *dirty_cow_pnode(struct ubifs_info *c,
         }
 
         /* pnode is being committed, so copy it */
-        p = kmalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
+        p = kmemdup(pnode, sizeof(struct ubifs_pnode), GFP_NOFS);
         if (unlikely(!p))
                 return ERR_PTR(-ENOMEM);
 
-        memcpy(p, pnode, sizeof(struct ubifs_pnode));
         p->cnext = NULL;
         __set_bit(DIRTY_CNODE, &p->flags);
         __clear_bit(COW_CNODE, &p->flags);
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 957f5757f374..fa9a20cc60d6 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -198,11 +198,10 @@ static struct ubifs_znode *copy_znode(struct ubifs_info *c,
 {
         struct ubifs_znode *zn;
 
-        zn = kmalloc(c->max_znode_sz, GFP_NOFS);
+        zn = kmemdup(znode, c->max_znode_sz, GFP_NOFS);
         if (unlikely(!zn))
                 return ERR_PTR(-ENOMEM);
 
-        memcpy(zn, znode, c->max_znode_sz);
         zn->cnext = NULL;
         __set_bit(DIRTY_ZNODE, &zn->flags);
         __clear_bit(COW_ZNODE, &zn->flags);