rename generic_setattr

Despite its name it's now a generic implementation of ->setattr, but
rather a helper to copy attributes from a struct iattr to the inode.
Rename it to setattr_copy to reflect this fact.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/sysfs/inode.c

@@ -122,7 +122,7 @@ int sysfs_setattr(struct dentry *dentry, struct iattr *iattr)
 		goto out;
 
 	/* this ignores size changes */
-	generic_setattr(inode, iattr);
+	setattr_copy(inode, iattr);
 
 out:
 	mutex_unlock(&sysfs_mutex);