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>

1 files changed, 0 insertions, 50 deletions

diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 5e9b8dcf34d..6f92f732d25 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -290,52 +290,8 @@ int os_seek_file(int fd, __u64 offset)
 	return 0;
 }
 
-static int fault_buffer(void *start, int len,
-			int (*copy_proc)(void *addr, void *buf, int len))
-{
-	int page = getpagesize(), i;
-	char c;
-
-	for(i = 0; i < len; i += page){
-		if((*copy_proc)(start + i, &c, sizeof(c)))
-			return -EFAULT;
-	}
-	if((len % page) != 0){
-		if((*copy_proc)(start + len - 1, &c, sizeof(c)))
-			return -EFAULT;
-	}
-	return 0;
-}
-
-static int file_io(int fd, void *buf, int len,
-		   int (*io_proc)(int fd, void *buf, int len),
-		   int (*copy_user_proc)(void *addr, void *buf, int len))
-{
-	int n, err;
-
-	do {
-		n = (*io_proc)(fd, buf, len);
-		if((n < 0) && (errno == EFAULT)){
-			err = fault_buffer(buf, len, copy_user_proc);
-			if(err)
-				return err;
-			n = (*io_proc)(fd, buf, len);
-		}
-	} while((n < 0) && (errno == EINTR));
-
-	if(n < 0)
-		return -errno;
-	return n;
-}
-
 int os_read_file(int fd, void *buf, int len)
 {
-	return file_io(fd, buf, len, (int (*)(int, void *, int)) read,
-		       copy_from_user_proc);
-}
-
-int os_read_file_k(int fd, void *buf, int len)
-{
 	int n = read(fd, buf, len);
 
 	if(n < 0)
@@ -345,12 +301,6 @@ int os_read_file_k(int fd, void *buf, int len)
 
 int os_write_file(int fd, const void *buf, int len)
 {
-	return file_io(fd, (void *) buf, len,
-		       (int (*)(int, void *, int)) write, copy_to_user_proc);
-}
-
-int os_write_file_k(int fd, const void *buf, int len)
-{
 	int n = write(fd, (void *) buf, len);
 
 	if(n < 0)