uml: rename os_{read_write}_file_k back to os_{read_write}_file

Rename os_{read_write}_file_k back to os_{read_write}_file, delete
the originals and their bogus infrastructure, and fix all the callers.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 8bc6688..3503cff 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -63,7 +63,7 @@
 	}
 		
 	*output = '\0';
-	ret = os_read_file_k(fd, &remain, sizeof(remain));
+	ret = os_read_file(fd, &remain, sizeof(remain));
 
 	if (ret != sizeof(remain)) {
 		expected = sizeof(remain);
@@ -73,7 +73,7 @@
 
 	while(remain != 0){
 		expected = (remain < len) ? remain : len;
-		ret = os_read_file_k(fd, output, expected);
+		ret = os_read_file(fd, output, expected);
 		if (ret != expected) {
 			str = "data";
 			goto err;
@@ -94,7 +94,7 @@
 {
 	int n;
 
-	n = os_read_file_k(fd,  buf,  len);
+	n = os_read_file(fd,  buf,  len);
 
 	if(n == -EAGAIN)
 		return 0;
@@ -122,7 +122,7 @@
 {
 	int n;
 
-	n = os_write_file_k(fd, buf, len);
+	n = os_write_file(fd, buf, len);
 
 	if(n == -EAGAIN)
 		return 0;