patch-2.0.4 linux/arch/ppc/kernel/ramdisk_drvr.c

• Lines: 85
• Date: Thu Jan 1 02:00:00 1970
• Orig file: v2.0.3/linux/arch/ppc/kernel/ramdisk_drvr.c
• Orig date: Tue May 28 08:09:55 1996

diff -u --recursive --new-file v2.0.3/linux/arch/ppc/kernel/ramdisk_drvr.c linux/arch/ppc/kernel/ramdisk_drvr.c
@@ -1,84 +0,0 @@
-/*
- *  linux/kernel/blk_drv/ramdisk.c
- *
- *  Written by Theodore Ts'o, 12/2/91
- *
- * Modifications by Fred N. van Kempen to allow for bootable root
- * disks (which are used in LINUX/Pro).  Also some cleanups.  03/03/93
- */
-
-
-#include <linux/sched.h>
-#include <linux/minix_fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-
-#include <asm/system.h>
-#include <asm/segment.h>
-
-#define MAJOR_NR  MEM_MAJOR
-#include <linux/blk.h>
-
-#define RAMDISK_MINOR	1
-
-char	*rd_start;
-int	rd_length = 0;
-static int rd_blocksizes[2] = {0, 0};
-
-static void rd_request(void)
-{
-	int	len;
-	char	*addr;
-
-repeat:
-	INIT_REQUEST;
-	addr = rd_start + (CURRENT->sector << 9);
-	len = CURRENT->current_nr_sectors << 9;
-
-	if (CURRENT-> cmd == WRITE) {
-		(void ) memcpy(addr,
-			      CURRENT->buffer,
-			      len);
-	} else if (CURRENT->cmd == READ) {
-		(void) memcpy(CURRENT->buffer, 
-			      addr,
-			      len);
-	} else
-		panic("RAMDISK: unknown RAM disk command !\n");
-	end_request(1);
-	goto repeat;
-}
-
-static struct file_operations rd_fops = {
-	NULL,			/* lseek - default */
-	block_read,		/* read - general block-dev read */
-	block_write,		/* write - general block-dev write */
-	NULL,			/* readdir - bad */
-	NULL,			/* select */
-	NULL,			/* ioctl */
-	NULL,			/* mmap */
-	NULL,			/* no special open code */
-	NULL,			/* no special release code */
-	block_fsync		/* fsync */
-};
-
-void
-rd_preloaded_init(char *start, int length)
-{
-	int	i;
-
-	if (register_blkdev(MEM_MAJOR,"rd",&rd_fops)) {
-		printk("RAMDISK: Unable to get major %d.\n", MEM_MAJOR);
-		return 0;
-	}
-	blk_dev[MEM_MAJOR].request_fn = DEVICE_REQUEST;
-	rd_start = start;
-	rd_length = length;
-	for(i=0;i<2;i++) rd_blocksizes[i] = 1024;
-	blksize_size[MAJOR_NR] = rd_blocksizes;
-	/* We loaded the file system image.  Prepare for mounting it. */
-	ROOT_DEV = to_kdev_t((MEM_MAJOR << 8) | RAMDISK_MINOR);
-}