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/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index c81bd20..c631303 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -57,14 +57,14 @@
 	 * nor the value in "to" (since it was the task which stole us the CPU,
 	 * which we don't care about). */
 
-	err = os_write_file_k(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
+	err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
 	if(err != sizeof(c))
 		panic("write of switch_pipe failed, err = %d", -err);
 
 	if(from->thread.mode.tt.switch_pipe[0] == -1)
 		os_kill_process(os_getpid(), 0);
 
-	err = os_read_file_k(from->thread.mode.tt.switch_pipe[0], &c,
+	err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c,
 			     sizeof(c));
 	if(err != sizeof(c))
 		panic("read of switch_pipe failed, errno = %d", -err);
@@ -114,7 +114,7 @@
 	char c;
 
 	os_stop_process(os_getpid());
-	err = os_read_file_k(fd, &c, sizeof(c));
+	err = os_read_file(fd, &c, sizeof(c));
 	if(err != sizeof(c))
 		panic("read failed in suspend_new_thread, err = %d", -err);
 }
diff --git a/arch/um/kernel/tt/ptproxy/proxy.c b/arch/um/kernel/tt/ptproxy/proxy.c
index 007beb6..420c23f 100644
--- a/arch/um/kernel/tt/ptproxy/proxy.c
+++ b/arch/um/kernel/tt/ptproxy/proxy.c
@@ -338,14 +338,14 @@
 			       "err = %d\n", -fd);
 			exit(1);
 		}
-		os_write_file_k(fd, gdb_init_string,
-				sizeof(gdb_init_string) - 1);
+		os_write_file(fd, gdb_init_string,
+			      sizeof(gdb_init_string) - 1);
 		if(startup){
 			if(stop){
-				os_write_file_k(fd, "b start_kernel\n",
+				os_write_file(fd, "b start_kernel\n",
 						strlen("b start_kernel\n"));
 			}
-			os_write_file_k(fd, "c\n", strlen("c\n"));
+			os_write_file(fd, "c\n", strlen("c\n"));
 		}
 		if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
 			printk("start_debugger :  PTRACE_TRACEME failed, "
diff --git a/arch/um/kernel/tt/tracer.c b/arch/um/kernel/tt/tracer.c
index 264da6c..c235883 100644
--- a/arch/um/kernel/tt/tracer.c
+++ b/arch/um/kernel/tt/tracer.c
@@ -44,7 +44,7 @@
 	int n;
 	char c = 1;
 
-	n = os_write_file_k(tracer_winch[1], &c, sizeof(c));
+	n = os_write_file(tracer_winch[1], &c, sizeof(c));
 	if(n != sizeof(c))
 		printk("tracer_winch_handler - write failed, err = %d\n", -n);
 }