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/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index f5dfe49..0393e44 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -28,7 +28,7 @@
 	ptr = buf;
 	end = &buf[len];
 	do {
-		n = os_read_file_k(fd, ptr, sizeof(*ptr));
+		n = os_read_file(fd, ptr, sizeof(*ptr));
 		c = *ptr++;
 		if(n != sizeof(*ptr)){
 			if(n == 0)
@@ -67,7 +67,7 @@
 			return 1;
 
 		do {
-			n = os_read_file_k(fd, &c, sizeof(c));
+			n = os_read_file(fd, &c, sizeof(c));
 			if(n != sizeof(c)){
 				printk("Failed to find newline in "
 				       "/proc/cpuinfo, err = %d\n", -n);