+EXPORT_SYMBOL(kfifo_from_user);
+
+unsigned int __kfifo_from_user_generic(struct kfifo *fifo,
+ const void __user *from, unsigned int len, unsigned int recsize)
+{
+ return __kfifo_from_user_rec(fifo, from, len, recsize);
+}
+EXPORT_SYMBOL(__kfifo_from_user_generic);
+
+unsigned int __kfifo_to_user_n(struct kfifo *fifo,
+ void __user *to, unsigned int len, unsigned int reclen,
+ unsigned int recsize)
+{
+ unsigned int ret, total;
+
+ if (kfifo_len(fifo) < reclen + recsize)
+ return len;
+
+ ret = __kfifo_to_user_data(fifo, to, reclen, recsize, &total);
+
+ if (likely(ret == 0))
+ __kfifo_add_out(fifo, reclen + recsize);
+
+ return total;
+}
+EXPORT_SYMBOL(__kfifo_to_user_n);
+
+/**
+ * kfifo_to_user - gets data from the FIFO and write it to user space
+ * @fifo: the fifo to be used.
+ * @to: where the data must be copied.
+ * @len: the size of the destination buffer.
+ * @lenout: pointer to output variable with copied data
+ *
+ * This function copies at most @len bytes from the FIFO into the
+ * @to buffer and 0 or -EFAULT.
+ *
+ * Note that with only one concurrent reader and one concurrent
+ * writer, you don't need extra locking to use these functions.
+ */
+int kfifo_to_user(struct kfifo *fifo,
+ void __user *to, unsigned int len, unsigned *lenout)
+{
+ int ret;
+ len = min(kfifo_len(fifo), len);
+ ret = __kfifo_to_user_data(fifo, to, len, 0, lenout);
+ __kfifo_add_out(fifo, *lenout);
+ return ret;
+}
+EXPORT_SYMBOL(kfifo_to_user);
+
+unsigned int __kfifo_to_user_generic(struct kfifo *fifo,
+ void __user *to, unsigned int len, unsigned int recsize,
+ unsigned int *total)
+{
+ return __kfifo_to_user_rec(fifo, to, len, recsize, total);
+}
+EXPORT_SYMBOL(__kfifo_to_user_generic);
+
+unsigned int __kfifo_peek_generic(struct kfifo *fifo, unsigned int recsize)
+{
+ if (recsize == 0)
+ return kfifo_avail(fifo);
+
+ return __kfifo_peek_n(fifo, recsize);
+}
+EXPORT_SYMBOL(__kfifo_peek_generic);
+
+void __kfifo_skip_generic(struct kfifo *fifo, unsigned int recsize)
+{
+ __kfifo_skip_rec(fifo, recsize);
+}
+EXPORT_SYMBOL(__kfifo_skip_generic);
+