linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / drivers / block / rd.c

diff --git a/drivers/block/rd.c b/drivers/block/rd.c
index a3f64bf..ffd6abd 100644 (file)
--- a/drivers/block/rd.c
+++ b/drivers/block/rd.c
@@ -42,6 +42,7 @@
  * and set blk_size for -ENOSPC,     Werner Fink <werner@suse.de>, Apr '99
  */
 
+#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <asm/atomic.h>
@@ -49,6 +50,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
+#include <linux/devfs_fs_kernel.h>
 #include <linux/pagemap.h>
 #include <linux/blkdev.h>
 #include <linux/genhd.h>
@@ -84,7 +86,7 @@ int rd_size = CONFIG_BLK_DEV_RAM_SIZE;                /* Size of the RAM disks */
  * behaviour. The default is still BLOCK_SIZE (needed by rd_load_image that
  * supposes the filesystem in the image uses a BLOCK_SIZE blocksize).
  */
-static int rd_blocksize = CONFIG_BLK_DEV_RAM_BLOCKSIZE;
+static int rd_blocksize = BLOCK_SIZE;          /* blocksize of the RAM disks */
 
 /*
  * Copyright (C) 2000 Linus Torvalds.
@@ -184,12 +186,11 @@ static int ramdisk_writepages(struct address_space *mapping,
  */
 static int ramdisk_set_page_dirty(struct page *page)
 {
-       if (!TestSetPageDirty(page))
-               return 1;
+       SetPageDirty(page);
        return 0;
 }
 
-static const struct address_space_operations ramdisk_aops = {
+static struct address_space_operations ramdisk_aops = {
        .readpage       = ramdisk_readpage,
        .prepare_write  = ramdisk_prepare_write,
        .commit_write   = ramdisk_commit_write,
@@ -309,12 +310,12 @@ static int rd_ioctl(struct inode *inode, struct file *file,
         * cache
         */
        error = -EBUSY;
-       mutex_lock(&bdev->bd_mutex);
+       down(&bdev->bd_sem);
        if (bdev->bd_openers <= 2) {
                truncate_inode_pages(bdev->bd_inode->i_mapping, 0);
                error = 0;
        }
-       mutex_unlock(&bdev->bd_mutex);
+       up(&bdev->bd_sem);
        return error;
 }
 
@@ -410,6 +411,7 @@ static void __exit rd_cleanup(void)
                put_disk(rd_disks[i]);
                blk_cleanup_queue(rd_queue[i]);
        }
+       devfs_remove("rd");
        unregister_blkdev(RAMDISK_MAJOR, "ramdisk");
 }
 
@@ -439,6 +441,8 @@ static int __init rd_init(void)
                goto out;
        }
 
+       devfs_mk_dir("rd");
+
        for (i = 0; i < CONFIG_BLK_DEV_RAM_COUNT; i++) {
                struct gendisk *disk = rd_disks[i];
 
@@ -456,6 +460,7 @@ static int __init rd_init(void)
                disk->queue = rd_queue[i];
                disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO;
                sprintf(disk->disk_name, "ram%d", i);
+               sprintf(disk->devfs_name, "rd/%d", i);
                set_capacity(disk, rd_size * 2);
                add_disk(rd_disks[i]);
        }