[PATCH] md: possible fix for unplug problem

[mirror_ubuntu-kernels.git] / drivers / md / md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 306268ec99ff11572e975145f3f916ee4144cf63..e4e161372a3e431ba8cfb0bd0736f5efc4ecdf72 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -33,13 +33,11 @@
 */
 
 #include <linux/module.h>
-#include <linux/config.h>
 #include <linux/kthread.h>
 #include <linux/linkage.h>
 #include <linux/raid/md.h>
 #include <linux/raid/bitmap.h>
 #include <linux/sysctl.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/buffer_head.h> /* for invalidate_bdev */
 #include <linux/suspend.h>
 #include <linux/poll.h>
@@ -1406,7 +1404,7 @@ static int lock_rdev(mdk_rdev_t *rdev, dev_t dev)
        struct block_device *bdev;
        char b[BDEVNAME_SIZE];
 
-       bdev = open_by_devnum(dev, FMODE_READ|FMODE_WRITE);
+       bdev = open_partition_by_devnum(dev, FMODE_READ|FMODE_WRITE);
        if (IS_ERR(bdev)) {
                printk(KERN_ERR "md: could not open %s.\n",
                        __bdevname(dev, b));
@@ -1416,7 +1414,7 @@ static int lock_rdev(mdk_rdev_t *rdev, dev_t dev)
        if (err) {
                printk(KERN_ERR "md: could not bd_claim %s.\n",
                        bdevname(bdev, b));
-               blkdev_put(bdev);
+               blkdev_put_partition(bdev);
                return err;
        }
        rdev->bdev = bdev;
@@ -1430,7 +1428,7 @@ static void unlock_rdev(mdk_rdev_t *rdev)
        if (!bdev)
                MD_BUG();
        bd_release(bdev);
-       blkdev_put(bdev);
+       blkdev_put_partition(bdev);
 }
 
 void md_autodetect_dev(dev_t dev);
@@ -2911,13 +2909,10 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data)
        }
        disk->major = MAJOR(dev);
        disk->first_minor = unit << shift;
-       if (partitioned) {
+       if (partitioned)
                sprintf(disk->disk_name, "md_d%d", unit);
-               sprintf(disk->devfs_name, "md/d%d", unit);
-       } else {
+       else
                sprintf(disk->disk_name, "md%d", unit);
-               sprintf(disk->devfs_name, "md/%d", unit);
-       }
        disk->fops = &md_fops;
        disk->private_data = mddev;
        disk->queue = mddev->queue;
@@ -5538,8 +5533,6 @@ static void md_geninit(void)
 
 static int __init md_init(void)
 {
-       int minor;
-
        printk(KERN_INFO "md: md driver %d.%d.%d MAX_MD_DEVS=%d,"
                        " MD_SB_DISKS=%d\n",
                        MD_MAJOR_VERSION, MD_MINOR_VERSION,
@@ -5553,23 +5546,11 @@ static int __init md_init(void)
                unregister_blkdev(MAJOR_NR, "md");
                return -1;
        }
-       devfs_mk_dir("md");
        blk_register_region(MKDEV(MAJOR_NR, 0), MAX_MD_DEVS, THIS_MODULE,
                                md_probe, NULL, NULL);
        blk_register_region(MKDEV(mdp_major, 0), MAX_MD_DEVS<<MdpMinorShift, THIS_MODULE,
                            md_probe, NULL, NULL);
 
-       for (minor=0; minor < MAX_MD_DEVS; ++minor)
-               devfs_mk_bdev(MKDEV(MAJOR_NR, minor),
-                               S_IFBLK|S_IRUSR|S_IWUSR,
-                               "md/%d", minor);
-
-       for (minor=0; minor < MAX_MD_DEVS; ++minor)
-               devfs_mk_bdev(MKDEV(mdp_major, minor<<MdpMinorShift),
-                             S_IFBLK|S_IRUSR|S_IWUSR,
-                             "md/mdp%d", minor);
-
-
        register_reboot_notifier(&md_notifier);
        raid_table_header = register_sysctl_table(raid_root_table, 1);
 
@@ -5625,15 +5606,9 @@ static __exit void md_exit(void)
 {
        mddev_t *mddev;
        struct list_head *tmp;
-       int i;
+
        blk_unregister_region(MKDEV(MAJOR_NR,0), MAX_MD_DEVS);
        blk_unregister_region(MKDEV(mdp_major,0), MAX_MD_DEVS << MdpMinorShift);
-       for (i=0; i < MAX_MD_DEVS; i++)
-               devfs_remove("md/%d", i);
-       for (i=0; i < MAX_MD_DEVS; i++)
-               devfs_remove("md/d%d", i);
-
-       devfs_remove("md");
 
        unregister_blkdev(MAJOR_NR,"md");
        unregister_blkdev(mdp_major, "mdp");