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nfs: clean up sillyrenaming in nfs_rename() 

The d_instantiate(new_dentry, NULL) is superfluous, the dentry is
already negative.  Rehashing this dummy dentry isn't needed either,
d_move() works fine on an unhashed target.

The re-checking for busy after a failed nfs_sillyrename() is bogus
too: new_dentry->d_count < 2 would be a bug here.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Miklos Szeredi 2009-12-03 15:58:56 -05:00 committed by Trond Myklebust
parent 27226104e6
commit 24e93025ee
1 changed files with 4 additions and 7 deletions
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11
fs/nfs/dir.c
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@ -1611,14 +1611,11 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
/* silly-rename the existing target ... */
err = nfs_sillyrename(new_dir, new_dentry);
if (!err) {
new_dentry = rehash = dentry;
new_inode = NULL;
/* instantiate the replacement target */
d_instantiate(new_dentry, NULL);
} else if (atomic_read(&new_dentry->d_count) > 1)
/* dentry still busy? */
if (err)
goto out;
new_dentry = dentry;
new_inode = NULL;
}
}