ecryptfs: Eliminate useless code

The variable lower_dentry is initialized twice to the same (side effect-free)
expression.  Drop one initialization.

A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)

// <smpl>
@forall@
idexpression *x;
identifier f!=ERR_PTR;
@@

x = f(...)
... when != x
(
x = f(...,<+...x...+>,...)
|
* x = f(...)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index dde7bb48bb5f8a4430a591e7dc5fb45851beb9fc..678172b61be2a676de90fa8d7e5101e04f566ed4 100644 (file)
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -158,7 +158,7 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
        struct dentry *ecryptfs_dentry = file->f_path.dentry;
        /* Private value of ecryptfs_dentry allocated in
         * ecryptfs_lookup() */
-       struct dentry *lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
+       struct dentry *lower_dentry;
        struct ecryptfs_file_info *file_info;
 
        mount_crypt_stat = &ecryptfs_superblock_to_private(