Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial

[pandora-kernel.git] / drivers / md / md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index db1ac84..cb82816 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -389,8 +389,12 @@ static int super_written(struct bio *bio, unsigned int bytes_done, int error)
        if (bio->bi_size)
                return 1;
 
-       if (error || !test_bit(BIO_UPTODATE, &bio->bi_flags))
+       if (error || !test_bit(BIO_UPTODATE, &bio->bi_flags)) {
+               printk("md: super_written gets error=%d, uptodate=%d\n",
+                      error, test_bit(BIO_UPTODATE, &bio->bi_flags));
+               WARN_ON(test_bit(BIO_UPTODATE, &bio->bi_flags));
                md_error(mddev, rdev);
+       }
 
        if (atomic_dec_and_test(&mddev->pending_writes))
                wake_up(&mddev->sb_wait);
@@ -3409,6 +3413,7 @@ static void autorun_devices(int part)
 
        printk(KERN_INFO "md: autorun ...\n");
        while (!list_empty(&pending_raid_disks)) {
+               int unit;
                dev_t dev;
                LIST_HEAD(candidates);
                rdev0 = list_entry(pending_raid_disks.next,
@@ -3428,16 +3433,19 @@ static void autorun_devices(int part)
                 * mostly sane superblocks. It's time to allocate the
                 * mddev.
                 */
-               if (rdev0->preferred_minor < 0 || rdev0->preferred_minor >= MAX_MD_DEVS) {
+               if (part) {
+                       dev = MKDEV(mdp_major,
+                                   rdev0->preferred_minor << MdpMinorShift);
+                       unit = MINOR(dev) >> MdpMinorShift;
+               } else {
+                       dev = MKDEV(MD_MAJOR, rdev0->preferred_minor);
+                       unit = MINOR(dev);
+               }
+               if (rdev0->preferred_minor != unit) {
                        printk(KERN_INFO "md: unit number in %s is bad: %d\n",
                               bdevname(rdev0->bdev, b), rdev0->preferred_minor);
                        break;
                }
-               if (part)
-                       dev = MKDEV(mdp_major,
-                                   rdev0->preferred_minor << MdpMinorShift);
-               else
-                       dev = MKDEV(MD_MAJOR, rdev0->preferred_minor);
 
                md_probe(dev, NULL, NULL);
                mddev = mddev_find(dev);
@@ -4430,8 +4438,7 @@ static int md_release(struct inode *inode, struct file * file)
 {
        mddev_t *mddev = inode->i_bdev->bd_disk->private_data;
 
-       if (!mddev)
-               BUG();
+       BUG_ON(!mddev);
        mddev_put(mddev);
 
        return 0;
@@ -5524,22 +5531,15 @@ static void md_geninit(void)
 
 static int __init md_init(void)
 {
-       printk(KERN_INFO "md: md driver %d.%d.%d MAX_MD_DEVS=%d,"
-                       " MD_SB_DISKS=%d\n",
-                       MD_MAJOR_VERSION, MD_MINOR_VERSION,
-                       MD_PATCHLEVEL_VERSION, MAX_MD_DEVS, MD_SB_DISKS);
-       printk(KERN_INFO "md: bitmap version %d.%d\n", BITMAP_MAJOR_HI,
-                       BITMAP_MINOR);
-
        if (register_blkdev(MAJOR_NR, "md"))
                return -1;
        if ((mdp_major=register_blkdev(0, "mdp"))<=0) {
                unregister_blkdev(MAJOR_NR, "md");
                return -1;
        }
-       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,
+       blk_register_region(MKDEV(MAJOR_NR, 0), 1UL<<MINORBITS, THIS_MODULE,
+                           md_probe, NULL, NULL);
+       blk_register_region(MKDEV(mdp_major, 0), 1UL<<MINORBITS, THIS_MODULE,
                            md_probe, NULL, NULL);
 
        register_reboot_notifier(&md_notifier);
@@ -5598,8 +5598,8 @@ static __exit void md_exit(void)
        mddev_t *mddev;
        struct list_head *tmp;
 
-       blk_unregister_region(MKDEV(MAJOR_NR,0), MAX_MD_DEVS);
-       blk_unregister_region(MKDEV(mdp_major,0), MAX_MD_DEVS << MdpMinorShift);
+       blk_unregister_region(MKDEV(MAJOR_NR,0), 1U << MINORBITS);
+       blk_unregister_region(MKDEV(mdp_major,0), 1U << MINORBITS);
 
        unregister_blkdev(MAJOR_NR,"md");
        unregister_blkdev(mdp_major, "mdp");