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/ldt.c b/arch/um/sys-i386/ldt.c
index d031a13..a939a7e 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -517,7 +517,7 @@
 					      .u 	=
 					      { .copy_segments =
 							from_mm->id.u.mm_fd } } );
-		i = os_write_file_k(new_mm->id.u.mm_fd, &copy, sizeof(copy));
+		i = os_write_file(new_mm->id.u.mm_fd, &copy, sizeof(copy));
 		if(i != sizeof(copy))
 			printk("new_mm : /proc/mm copy_segments failed, "
 			       "err = %d\n", -i);