don't open-code d_rehash() in d_materialise_unique()

... and get rid of duplicate BUG_ON() there

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/dcache.c b/fs/dcache.c
index 36d84ec..2210763 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2804,12 +2804,8 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode)
        actual = __d_instantiate_unique(dentry, inode);
        if (!actual)
                actual = dentry;
-       else
-               BUG_ON(!d_unhashed(actual));
 
-       spin_lock(&actual->d_lock);
-       _d_rehash(actual);
-       spin_unlock(&actual->d_lock);
+       d_rehash(actual);
 found:
        spin_unlock(&inode->i_lock);
 out_nolock: