Merge home.transmeta.com:/home/torvalds/v2.5/viro

into home.transmeta.com:/home/torvalds/v2.5/linux

drivers/acorn/block/mfmhd.c

@@ -193,8 +193,6 @@ struct mfm_info {
 
 #define MFM_DRV_INFO mfm_info[raw_cmd.dev]
 
-static struct hd_struct mfm[MFM_MAXDRIVES << 6];
-
 /* Stuff from the assembly routines */
 extern unsigned int hdc63463_baseaddress;	/* Controller base address */
 extern unsigned int hdc63463_irqpolladdress;	/* Address to read to test for int */
@@ -882,6 +880,20 @@ static void mfm_rerequest(void)
 	mfm_request();
 }
 
+static struct gendisk mfm_gendisk[2] = {
+{
+	.major		= MAJOR_NR,
+	.first_minor	= 0,
+	.major_name	= "mfma",
+	.minor_shift	= 6,
+},
+{
+	.major		= MAJOR_NR,
+	.first_minor	= 64,
+	.major_name	= "mfmb",
+	.minor_shift	= 6,
+};
+
 static void mfm_request(void)
 {
 	DBG("mfm_request CURRENT=%p Busy=%d\n", CURRENT, Busy);
@@ -895,7 +907,7 @@ static void mfm_request(void)
 	Busy = 1;
 
 	while (1) {
-		unsigned int dev, block, nsect;
+		unsigned int dev, block, nsect, unit;
 
 		DBG("mfm_request: loop start\n");
 		sti();
@@ -912,26 +924,26 @@ static void mfm_request(void)
 		DBG("mfm_request:                 before arg extraction\n");
 
 		dev = minor(CURRENT->rq_dev);
+		unit = dev>>6;
 		block = CURRENT->sector;
 		nsect = CURRENT->nr_sectors;
 #ifdef DEBUG
-		/*if ((dev>>6)==1) */ console_printf("mfm_request:                                raw vals: dev=%d (block=512 bytes) block=%d nblocks=%d\n", dev, block, nsect);
+		/*if (unit==1) */ console_printf("mfm_request:                                raw vals: dev=%d (block=512 bytes) block=%d nblocks=%d\n", dev, block, nsect);
 #endif
-		if (dev >= (mfm_drives << 6) ||
-		    block >= mfm[dev].nr_sects || ((block+nsect) > mfm[dev].nr_sects)) {
-			if (dev >= (mfm_drives << 6))
+		if (unit >= mfm_drives ||
+		    block >= get_capacity(mfm_gendisk + unit) ||
+		    ((block+nsect) > get_capacity(mfm_gendisk + unit))) {
+			if (unit >= mfm_drives)
 				printk("mfm: bad minor number: device=%s\n", kdevname(CURRENT->rq_dev));
 			else
-				printk("mfm%c: bad access: block=%d, count=%d, nr_sects=%ld\n", (dev >> 6)+'a',
-				       block, nsect, mfm[dev].nr_sects);
+				printk("mfm%c: bad access: block=%d, count=%d, nr_sects=%ld\n", unit+'a',
+				       block, nsect, get_capacity(mfm_gendisk+unit));
 			printk("mfm: continue 1\n");
 			end_request(CURRENT, 0);
 			Busy = 0;
 			continue;
 		}
 
-		block += mfm[dev].start_sect;
-
 		/* DAG: Linux doesn't cope with this - even though it has an array telling
 		   it the hardware block size - silly */
 		block <<= 1;	/* Now in 256 byte sectors */
@@ -1163,18 +1175,9 @@ static int mfm_initdrives(void)
 static int mfm_ioctl(struct inode *inode, struct file *file, u_int cmd, u_long arg)
 {
 	struct hd_geometry *geo = (struct hd_geometry *) arg;
-	kdev_t dev;
-	int device, minor, err;
-
-	if (!inode || !(dev = inode->i_rdev))
-		return -EINVAL;
-
-	minor = minor(dev);
-
-	device = DEVICE_NR(minor(inode->i_rdev)), err;
+	int device = DEVICE_NR(minor(inode->i_rdev));
 	if (device >= mfm_drives)
 		return -EINVAL;
-
 	if (cmd != HDIO_GETGEO)
 		return -EINVAL;
 	if (!arg)
@@ -1185,7 +1188,8 @@ static int mfm_ioctl(struct inode *inode, struct file *file, u_int cmd, u_long a
 		return -EFAULT;
 	if (put_user (mfm_info[device].cylinders, &geo->cylinders))
 		return -EFAULT;
-	if (put_user (mfm[minor].start_sect, &geo->start))
+	start = get_start_sect(inode->i_bdev);
+	if (put_user (get_start_sect(inode->i_bdev), &geo->start))
 		return -EFAULT;
 	return 0;
 }
@@ -1237,27 +1241,10 @@ void xd_set_geometry(struct block_device *bdev, unsigned char secsptrack,
 		if (raw_cmd.dev == drive)
 			mfm_specify ();
 		mfm_geometry (drive);
-		mfm[drive << 6].start_sect = 0;
-		mfm[drive << 6].nr_sects = mfm_info[drive].cylinders * mfm_info[drive].heads * mfm_info[drive].sectors / 2;
+		set_capacity(&mfm_gendisk[drive], mfm_info[drive].cylinders * mfm_info[drive].heads * mfm_info[drive].sectors / 2);
 	}
 }
 
-static struct gendisk mfm_gendisk[2] = {
-{
-	.major		= MAJOR_NR,
-	.first_minor	= 0,
-	.major_name	= "mfma",
-	.minor_shift	= 6,
-	.part		= mfm,
-},
-{
-	.major		= MAJOR_NR,
-	.first_minor	= 64,
-	.major_name	= "mfmb",
-	.minor_shift	= 6,
-	.part		= mfm + 64,
-};
-
 static struct block_device_operations mfm_fops =
 {
 	.owner		= THIS_MODULE,
@@ -1280,7 +1267,6 @@ static void mfm_geninit (void)
 		outw(0x80, mfm_irqenable);	/* Required to enable IRQs from MFM podule */
 
 	for (i = 0; i < mfm_drives; i++) {
-		mfm_gendisk[i].nr_real = 1;
 		add_gendisk(mfm_gendisk + i);
 		mfm_geometry (i);
 		register_disk(mfm_gendisk + i, mk_kdev(MAJOR_NR,i<<6), 1<<6,

drivers/block/DAC960.c

@@ -1968,12 +1968,10 @@ static boolean DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
 	struct gendisk *disk = &Controller->disks[n];
 	memset(disk, 0, sizeof(struct gendisk));
 	sprintf(names + 9 * n, "rd/c%dd%d", Controller->ControllerNumber, n);
-	disk->part = Controller->DiskPartitions + (n<<DAC960_MaxPartitionsBits);
 	disk->major = MajorNumber;
 	disk->first_minor = n << DAC960_MaxPartitionsBits;
 	disk->major_name = names + 9 * n;
 	disk->minor_shift = DAC960_MaxPartitionsBits;
-	disk->nr_real = 1;
 	disk->fops = &DAC960_BlockDeviceOperations;
 	add_gendisk(disk);
    }
@@ -2034,10 +2032,9 @@ static long disk_size(DAC960_Controller_T *Controller, int disk)
 
 static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
 {
-	struct gendisk *disks = Controller->disks;
 	int disk;
 	for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
-		disks->part[0].nr_sects = disk_size(Controller, disk);
+		set_capacity(Controller->disks + disk, disk_size(Controller, disk));
 }
 
 static int DAC960_revalidate(kdev_t dev)
@@ -2045,7 +2042,7 @@ static int DAC960_revalidate(kdev_t dev)
 	int ctlr = DAC960_ControllerNumber(dev);
 	int disk = DAC960_LogicalDriveNumber(dev);
 	DAC960_Controller_T *p = DAC960_Controllers[ctlr];
-	p->disks[disk].part[0].nr_sects = disk_size(p, disk);
+	set_capacity(&p->disks[disk], disk_size(p, disk));
 	return 0;
 }
 
@@ -5277,7 +5274,7 @@ static int DAC960_Open(Inode_T *Inode, File_T *File)
 	    DAC960_KernelDevice(Controller->ControllerNumber, LogicalDriveNumber, 0),
 	    DAC960_MaxPartitions, &DAC960_BlockDeviceOperations, size);
     }
-  if (Controller->disks[LogicalDriveNumber].part[0].nr_sects == 0)
+  if (!get_capacity(&Controller->disks[LogicalDriveNumber]))
     return -ENXIO;
   /*
     Increment Controller and Logical Drive Usage Counts.

drivers/block/DAC960.h

@@ -2196,7 +2196,6 @@ typedef struct file File_T;
 typedef struct block_device_operations BlockDeviceOperations_T;
 typedef struct completion Completion_T;
 typedef struct hd_geometry DiskGeometry_T;
-typedef struct hd_struct DiskPartition_T;
 typedef struct inode Inode_T;
 typedef struct inode_operations InodeOperations_T;
 typedef kdev_t KernelDevice_T;
@@ -2472,7 +2471,6 @@ typedef struct DAC960_Controller
       boolean LogicalDriveFoundDuringScan[DAC960_MaxLogicalDrives];
     } V2;
   } FW;
-  DiskPartition_T DiskPartitions[DAC960_MinorCount];
   unsigned char ProgressBuffer[DAC960_ProgressBufferSize];
   unsigned char UserStatusBuffer[DAC960_UserMessageSize];
 }

drivers/block/acsi.c

@@ -245,7 +245,6 @@ char 			*acsi_buffer;
 unsigned long 	phys_acsi_buffer;
 
 static int NDevices;
-static struct hd_struct	acsi_part[MAX_DEV<<4];
 static char acsi_names[MAX_DEV*4];
 static int access_count[MAX_DEV];
 
@@ -783,7 +782,7 @@ static void read_intr( void )
 	
 	status = acsi_getstatus();
 	if (status != 0) {
-		int dev = minor(CURRENT->rq_dev);
+		int dev = DEVICE_NR(CURRENT->rq_dev);
 		printk( KERN_ERR "ad%c: ", dev+'a' );
 		if (!acsi_reqsense( acsi_buffer, acsi_info[dev].target, 
 					acsi_info[dev].lun))
@@ -814,7 +813,7 @@ static void write_intr(void)
 
 	status = acsi_getstatus();
 	if (status != 0) {
-		int	dev = minor(CURRENT->rq_dev);
+		int	dev = DEVICE_NR(CURRENT->rq_dev);
 		printk( KERN_ERR "ad%c: ", dev+'a' );
 		if (!acsi_reqsense( acsi_buffer, acsi_info[dev].target,
 					acsi_info[dev].lun))
@@ -973,15 +972,15 @@ static void redo_acsi_request( void )
 			panic(DEVICE_NAME ": block not locked");
 	}
 
-	dev = minor(CURRENT->rq_dev);
+	dev = DEVICE_NR(CURRENT->rq_dev);
 	block = CURRENT->sector;
 	if (dev >= NDevices ||
-		block+CURRENT->nr_sectors >= acsi_part[dev].nr_sects) {
+		block+CURRENT->nr_sectors >= get_capacity(acsi_gendisk + dev)) {
 #ifdef DEBUG
 		printk( "ad%c: attempted access for blocks %d...%ld past end of device at block %ld.\n",
 		       dev+'a',
 		       block, block + CURRENT->nr_sectors - 1,
-		       acsi_part[dev].nr_sects);
+		       get_capacity(acsi_gendisk + dev));
 #endif
 		end_request(CURRENT, 0);
 		goto repeat;
@@ -1088,11 +1087,7 @@ static void redo_acsi_request( void )
 static int acsi_ioctl( struct inode *inode, struct file *file,
 					   unsigned int cmd, unsigned long arg )
 {
-	dev_t dev;
-
-	if (!inode)
-		return -EINVAL;
-	dev = minor(inode->i_rdev);
+	int dev = DEVICE_NR(inode->i_rdev);
 	if (dev >= NDevices)
 		return -EINVAL;
 	switch (cmd) {
@@ -1140,7 +1135,7 @@ static int acsi_open( struct inode * inode, struct file * filp )
 	int  device;
 	struct acsi_info_struct *aip;
 
-	device = minor(inode->i_rdev);
+	device = DEVICE_NR(inode->i_rdev);
 	if (device >= NDevices)
 		return -ENXIO;
 	aip = &acsi_info[device];
@@ -1176,7 +1171,7 @@ static int acsi_open( struct inode * inode, struct file * filp )
 
 static int acsi_release( struct inode * inode, struct file * file )
 {
-	int device = minor(inode->i_rdev);
+	int device = DEVICE_NR(inode->i_rdev);
 	if (--access_count[device] == 0 && acsi_info[device].removable)
 		acsi_prevent_removal(device, 0);
 	return( 0 );
@@ -1204,7 +1199,7 @@ static void acsi_prevent_removal(int device, int flag)
 
 static int acsi_media_change (kdev_t dev)
 {
-	int device = minor(dev);
+	int device = DEVICE_NR(dev);
 	struct acsi_info_struct *aip;
 
 	aip = &acsi_info[device];
@@ -1702,9 +1697,7 @@ static void acsi_geninit(void)
 		disk->first_minor = i << 4;
 		disk->major_name = acsi_names + 4*i;
 		disk->minor_shift = (acsi_info[i].type==HARDDISK)?4:0;
-		disk->part = acsi_part + (i<<4);
 		disk->fops = &acsi_fops;
-		disk->nr_real = 1;
 		add_gendisk(disk);
 		register_disk(disk, mk_kdev(disk->major, disk->first_minor),
 				1<<disk->minor_shift,
@@ -1808,7 +1801,7 @@ void cleanup_module(void)
 
 static int acsi_revalidate(kdev_t dev)
 {
-	int unit = DEVICE_NR(minor(dev));
+	int unit = DEVICE_NR(dev);
 	struct acsi_info_struct *aip = &acsi_info[unit];
 	stdma_lock( NULL, NULL );
 	if (acsi_devinit(aip) != DEV_SUPPORTED) {
@@ -1822,6 +1815,6 @@ static int acsi_revalidate(kdev_t dev)
 
 	ENABLE_IRQ();
 	stdma_release();
-	acsi_part[minor(dev)].nr_sects = aip->size;
+	set_capacity(acsi_gendisk + unit, aip->size);
 	return 0;
 }

drivers/block/blkpg.c

@@ -71,7 +71,6 @@ int add_partition(struct block_device *bdev, struct blkpg_partition *p)
 	long pstart, plength;
 	int i;
 	kdev_t dev = to_kdev_t(bdev->bd_dev);
-	struct hd_struct *part;
 
 	/* convert bytes to sectors, check for fit in a hd_struct */
 	ppstart = (p->start >> 9);
@@ -86,7 +85,6 @@ int add_partition(struct block_device *bdev, struct blkpg_partition *p)
 	g = get_gendisk(dev);
 	if (!g)
 		return -ENXIO;
-	part = g->part + minor(dev) - g->first_minor;
 
 	/* existing drive? */
 
@@ -97,19 +95,19 @@ int add_partition(struct block_device *bdev, struct blkpg_partition *p)
 		return -EINVAL;
 
 	/* partition number in use? */
-	if (part[p->pno].nr_sects != 0)
+	if (g->part[p->pno - 1].nr_sects != 0)
 		return -EBUSY;
 
 	/* overlap? */
-	for (i = 1; i < (1<<g->minor_shift); i++)
-		if (!(pstart+plength <= part[i].start_sect ||
-		      pstart >= part[i].start_sect + part[i].nr_sects))
+	for (i = 0; i < (1<<g->minor_shift) - 1; i++)
+		if (!(pstart+plength <= g->part[i].start_sect ||
+		      pstart >= g->part[i].start_sect + g->part[i].nr_sects))
 			return -EBUSY;
 
 	/* all seems OK */
-	part[p->pno].start_sect = pstart;
-	part[p->pno].nr_sects = plength;
-	devfs_register_partitions (g, minor(dev), 0);
+	g->part[p->pno - 1].start_sect = pstart;
+	g->part[p->pno - 1].nr_sects = plength;
+	update_partition(g, p->pno);
 	return 0;
 }
 
@@ -128,22 +126,19 @@ int del_partition(struct block_device *bdev, struct blkpg_partition *p)
 	kdev_t dev = to_kdev_t(bdev->bd_dev);
 	struct gendisk *g;
 	struct block_device *bdevp;
-	struct hd_struct *part;
 	int holder;
 
 	/* find the drive major */
 	g = get_gendisk(dev);
 	if (!g)
 		return -ENXIO;
-	part = g->part + minor(dev) - g->first_minor;
-
 	if (bdev != bdev->bd_contains)
 		return -EINVAL;
 	if (p->pno <= 0 || p->pno >= (1 << g->minor_shift))
   		return -EINVAL;
 
 	/* existing drive and partition? */
-	if (part[p->pno].nr_sects == 0)
+	if (g->part[p->pno - 1].nr_sects == 0)
 		return -ENXIO;
 
 	/* partition in use? Incomplete check for now. */
@@ -159,9 +154,9 @@ int del_partition(struct block_device *bdev, struct blkpg_partition *p)
 	fsync_bdev(bdevp);
 	invalidate_bdev(bdevp, 0);
 
-	part[p->pno].start_sect = 0;
-	part[p->pno].nr_sects = 0;
-	devfs_register_partitions (g, minor(dev), 0);
+	g->part[p->pno - 1].start_sect = 0;
+	g->part[p->pno - 1].nr_sects = 0;
+	update_partition(g, p->pno);
 	bd_release(bdevp);
 	bdput(bdevp);
 

drivers/block/cciss.c

@@ -407,8 +407,7 @@ static int cciss_ioctl(struct inode *inode, struct file *filep,
                         driver_geo.sectors = 0x3f;
                         driver_geo.cylinders = hba[ctlr]->drv[dsk].nr_blocks / (0xff*0x3f);
                 }
-                driver_geo.start=
-                        hba[ctlr]->hd[minor(inode->i_rdev)].start_sect;
+                driver_geo.start= get_start_sect(inode->i_bdev);
                 if (copy_to_user((void *) arg, &driver_geo,
                                 sizeof( struct hd_geometry)))
                         return  -EFAULT;
@@ -705,7 +704,7 @@ static int cciss_revalidate(kdev_t dev)
         int ctlr = major(dev) - MAJOR_NR;
 	int target = minor(dev) >> NWD_SHIFT;
         struct gendisk *disk = &hba[ctlr]->gendisk[target];
-	disk->part[0].nr_sects = hba[ctlr]->drv[target].nr_blocks;
+	set_capacity(disk, hba[ctlr]->drv[target].nr_blocks);
 	return 0;
 }
 
@@ -742,7 +741,6 @@ static int revalidate_allvol(kdev_t dev)
 	for(i=0; i< NWD; i++) {
 		struct gendisk *disk = &hba[ctlr]->gendisk[i];
 		if (disk->major_name) {
-			wipe_partitions(mk_kdev(disk->major, disk->first_minor));
 			del_gendisk(disk);
 			disk->major_name = NULL;
 		}
@@ -752,7 +750,6 @@ static int revalidate_allvol(kdev_t dev)
          * Set the partition and block size structures for all volumes
          * on this controller to zero.  We will reread all of this data
          */
-	memset(hba[ctlr]->hd,         0, sizeof(struct hd_struct) * 256);
         memset(hba[ctlr]->drv,        0, sizeof(drive_info_struct)
 						* CISS_MAX_LUN);
         /*
@@ -802,7 +799,6 @@ static int deregister_disk(int ctlr, int logvol)
 
 	/* invalidate the devices and deregister the disk */ 
 	if (disk->major_name) {
-		wipe_partitions(mk_kdev(disk->major, disk->first_minor));
 		del_gendisk(disk);
 		disk->major_name = NULL;
 	}
@@ -2448,8 +2444,6 @@ static int __init cciss_init_one(struct pci_dev *pdev,
 		disk->first_minor = j << NWD_SHIFT;
 		disk->major_name = NULL;
 		disk->minor_shift = NWD_SHIFT;
-		disk->part = hba[i]->hd + (j << NWD_SHIFT);
-		disk->nr_real = 1;
 		if( !(drv->nr_blocks))
 			continue;
 		(BLK_DEFAULT_QUEUE(MAJOR_NR + i))->hardsect_size = drv->block_size;

drivers/block/cciss.h

@@ -83,9 +83,6 @@ struct ctlr_info
 	// Disk structures we need to pass back
 	struct gendisk   gendisk[NWD];
 	char names[12 * NWD];
-	   // indexed by minor numbers
-	struct hd_struct hd[256];
-	int		 sizes[256];
 #ifdef CONFIG_CISS_SCSI_TAPE
 	void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
 #endif

drivers/block/cpqarray.c

@@ -75,7 +75,6 @@ MODULE_LICENSE("GPL");
 
 static int nr_ctlr;
 static ctlr_info_t *hba[MAX_CTLR];
-static devfs_handle_t de_arr[MAX_CTLR][NWD];
 
 static int eisa[8];
 
@@ -103,7 +102,6 @@ static struct board_type products[] = {
 	{ 0x40580E11, "Smart Array 431",	&smart4_access },
 };
 
-static struct hd_struct * ida;
 static char *ida_names;
 static struct gendisk ida_gendisk[MAX_CTLR * NWD];
 
@@ -321,7 +319,6 @@ void cleanup_module(void)
 	}
 	devfs_find_and_unregister(NULL, "ida", 0, 0, 0, 0);
 	remove_proc_entry("cpqarray", proc_root_driver);
-	kfree(ida);
 	kfree(ida_names);
 }
 #endif /* MODULE */
@@ -347,15 +344,12 @@ int __init cpqarray_init(void)
 	printk("Found %d controller(s)\n", nr_ctlr);
 
 	/* allocate space for disk structs */
-	ida = kmalloc(sizeof(struct hd_struct)*nr_ctlr*NWD*16, GFP_KERNEL);
 	ida_names = kmalloc(nr_ctlr*NWD*10, GFP_KERNEL);
-	if (!ida || !ida_names) {
+	if (!ida_names) {
 		printk( KERN_ERR "cpqarray: out of memory");
-		kfree(ida);
 		kfree(ida_names);
 		return(num_cntlrs_reg);
 	}
-	memset(ida, 0, sizeof(struct hd_struct)*nr_ctlr*NWD*16);
 	/* 
 	 * register block devices
 	 * Find disks and fill in structs
@@ -408,7 +402,6 @@ int __init cpqarray_init(void)
 	
 			if (num_cntlrs_reg == 0) 
 			{
-				kfree(ida);
 				kfree(ida_names);
 			}
                 	return(num_cntlrs_reg);
@@ -450,9 +443,7 @@ int __init cpqarray_init(void)
 			disk->major = MAJOR_NR + i;
 			disk->first_minor = j<<NWD_SHIFT;
 			disk->minor_shift = NWD_SHIFT;
-			disk->part = ida + i*256 + (j<<NWD_SHIFT);
-			disk->nr_real = 1; 
-			disk->de_arr = &de_arr[i][j]; 
+			disk->flags = GENHD_FL_DEVFS;
 			disk->fops = &ida_fops; 
 			if (!drv->nr_blks)
 				continue;
@@ -1461,11 +1452,9 @@ static int revalidate_allvol(kdev_t dev)
 		struct gendisk *disk = ida_gendisk + ctlr*NWD + i;
 		if (!disk->major_name)
 			continue;
-		wipe_partitions(mk_kdev(disk->major, disk->first_minor));
 		del_gendisk(disk);
 		disk->major_name = NULL;
 	}
-	memset(ida+(ctlr*256),            0, sizeof(struct hd_struct)*NWD*16);
 	memset(hba[ctlr]->drv,            0, sizeof(drv_info_t)*NWD);
 
 	/*
@@ -1500,7 +1489,7 @@ static int ida_revalidate(kdev_t dev)
         int ctlr = major(dev) - MAJOR_NR;
 	int target = DEVICE_NR(dev);
         struct gendisk *gdev = &ida_gendisk[ctlr*NWD+target];
-	gdev->part[minor(dev)].nr_sects = hba[ctlr]->drv[target].nr_blks;
+	set_capacity(gdev, hba[ctlr]->drv[target].nr_blks);
 	return 0;
 }
 
@@ -1667,6 +1656,7 @@ static void getgeometry(int ctlr)
 	     (log_index < id_ctlr_buf->nr_drvs)
 	     && (log_unit < NWD);
 	     log_unit++) {
+		struct gendisk *disk = ida_gendisk + ctlr * NWD + log_unit;
 
 		size = sizeof(sense_log_drv_stat_t);
 
@@ -1731,13 +1721,10 @@ static void getgeometry(int ctlr)
                 			return;
 
 				}
-				if (!de_arr[ctlr][log_unit]) {
+				if (!disk->de) {
 					char txt[16];
-
-					sprintf(txt, "ida/c%dd%d", ctlr,
-						log_unit);
-					de_arr[ctlr][log_unit] =
-						devfs_mk_dir(NULL, txt, NULL);
+					sprintf(txt,"ida/c%dd%d",ctlr,log_unit);
+					disk->de = devfs_mk_dir(NULL,txt,NULL);
 				}
 				info_p->phys_drives =
 				    sense_config_buf->ctlr_phys_drv;

drivers/block/genhd.c

@@ -23,6 +23,7 @@
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 
 
 static rwlock_t gendisk_lock;
@@ -43,6 +44,19 @@ void
 add_gendisk(struct gendisk *gp)
 {
 	struct gendisk *sgp;
+	struct hd_struct *p = NULL;
+
+	if (gp->minor_shift) {
+		size_t size = sizeof(struct hd_struct)*((1<<gp->minor_shift)-1);
+		p = kmalloc(size, GFP_KERNEL);
+		if (!p) {
+			printk(KERN_ERR "out of memory; no partitions for %s\n",
+				gp->major_name);
+			gp->minor_shift = 0;
+		} else
+			memset(p, 0, size);
+	}
+	gp->part = p;
 
 	write_lock(&gendisk_lock);
 
@@ -67,32 +81,20 @@ add_gendisk(struct gendisk *gp)
 }
 
 EXPORT_SYMBOL(add_gendisk);
+EXPORT_SYMBOL(del_gendisk);
 
-
-/**
- * del_gendisk - remove partitioning information from kernel list
- * @gp: per-device partitioning information
- *
- * This function unregisters the partitioning information in @gp
- * with the kernel.
- */
-void
-del_gendisk(struct gendisk *gp)
+void unlink_gendisk(struct gendisk *disk)
 {
-	struct gendisk **gpp;
-
+	struct gendisk **p;
 	write_lock(&gendisk_lock);
-	for (gpp = &gendisk_head; *gpp; gpp = &((*gpp)->next))
-		if (*gpp == gp)
+	for (p = &gendisk_head; *p; p = &((*p)->next))
+		if (*p == disk)
 			break;
-	if (*gpp)
-		*gpp = (*gpp)->next;
+	if (*p)
+		*p = (*p)->next;
 	write_unlock(&gendisk_lock);
 }
 
-EXPORT_SYMBOL(del_gendisk);
-
-
 /**
  * get_gendisk - get partitioning information for a given device
  * @dev: device to get partitioning information for
@@ -160,14 +162,17 @@ static int show_partition(struct seq_file *part, void *v)
 		seq_puts(part, "major minor  #blocks  name\n\n");
 
 	/* show the full disk and all non-0 size partitions of it */
-	for (n = 0; n < (sgp->nr_real << sgp->minor_shift); n++) {
-		int minormask = (1<<sgp->minor_shift) - 1;
-		if ((n & minormask) && sgp->part[n].nr_sects == 0)
+	seq_printf(part, "%4d  %4d %10ld %s\n",
+		sgp->major, sgp->first_minor,
+		get_capacity(sgp) >> 1,
+		disk_name(sgp, 0, buf));
+	for (n = 0; n < (1<<sgp->minor_shift) - 1; n++) {
+		if (sgp->part[n].nr_sects == 0)
 			continue;
 		seq_printf(part, "%4d  %4d %10ld %s\n",
-			sgp->major, n + sgp->first_minor,
+			sgp->major, n + 1 + sgp->first_minor,
 			sgp->part[n].nr_sects >> 1 ,
-			disk_name(sgp, n + sgp->first_minor, buf));
+			disk_name(sgp, n + 1, buf));
 	}
 
 	return 0;

drivers/block/paride/pd.c

@@ -271,8 +271,6 @@ static void pd_doorlock(int unit, int func);
 static int pd_check_media(kdev_t dev);
 static void pd_eject( int unit);
 
-static struct hd_struct pd_hd[PD_DEVS];
-
 #define PD_NAMELEN	8
 
 struct pd_unit {
@@ -438,9 +436,9 @@ static int pd_revalidate(kdev_t dev)
 	if ((unit >= PD_UNITS) || !PD.present)
 		return -ENODEV;
 	if (pd_identify(unit))
-		pd_hd[minor(dev)].nr_sects = PD.capacity;
+		set_capacity(&PD.gd, PD.capacity);
 	else
-		pd_hd[minor(dev)].nr_sects = 0;
+		set_capacity(&PD.gd, 0);
         return 0;
 }
 
@@ -687,10 +685,8 @@ static int pd_detect( void )
 			PD.gd.major_name = PD.name;
 			PD.gd.minor_shift = PD_BITS;
 			PD.gd.fops = &pd_fops;
-			PD.gd.nr_real = 1;
 			PD.gd.major = major;
 			PD.gd.first_minor = unit << PD_BITS;
-			PD.gd.part = pd_hd + (unit << PD_BITS);
 			add_gendisk(&PD.gd);
 			register_disk(&PD.gd,mk_kdev(MAJOR_NR,unit<<PD_BITS),
 					PD_PARTNS,&pd_fops,
@@ -728,7 +724,7 @@ static void do_pd_request (request_queue_t * q)
         pd_count = CURRENT->current_nr_sectors;
 
         if ((pd_dev >= PD_DEVS) || 
-	    ((pd_block+pd_count) > pd_hd[pd_dev].nr_sects)) {
+	    ((pd_block+pd_count) > get_capacity(&pd[unit].gd))) {
                 end_request(CURRENT, 0);
                 goto repeat;
         }

drivers/block/ps2esdi.c

@@ -109,7 +109,6 @@ static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int);
 
 static int no_int_yet;
 static int ps2esdi_drives;
-static struct hd_struct ps2esdi[MAX_HD << 6];
 static u_short io_base;
 static struct timer_list esdi_timer = { function: ps2esdi_reset_timer };
 static int reset_status;
@@ -152,17 +151,13 @@ static struct gendisk ps2esdi_gendisk[2] = {
 	major_name:	"eda",
 	first_minor:	0,
 	minor_shift:	6,
-	part:		ps2esdi,
 	fops:		&ps2esdi_fops,
-	nr_real:	1
 },{
 	major:		MAJOR_NR,
 	first_minor:	64,
 	major_name:	"edb",
 	minor_shift:	6,
-	part:		ps2esdi+64,
 	fops:		&ps2esdi_fops,
-	nr_real:	1
 }
 };
 
@@ -489,6 +484,7 @@ static void __init ps2esdi_get_device_cfg(void)
 static void do_ps2esdi_request(request_queue_t * q)
 {
 	u_int block, count;
+	int unit;
 	/* since, this routine is called with interrupts cleared - they 
 	   must be before it finishes  */
 
@@ -505,18 +501,19 @@ static void do_ps2esdi_request(request_queue_t * q)
 	if (blk_queue_empty(QUEUE))
 		return;
 
+	unit = DEVICE_NR(CURRENT->rq_dev);
 	if (isa_virt_to_bus(CURRENT->buffer + CURRENT->current_nr_sectors * 512) > 16 * MB) {
 		printk("%s: DMA above 16MB not supported\n", DEVICE_NAME);
 		end_request(CURRENT, FAIL);
 	}			/* check for above 16Mb dmas */
-	else if ((DEVICE_NR(CURRENT->rq_dev) < ps2esdi_drives) &&
+	else if ((unit < ps2esdi_drives) &&
 	    (CURRENT->sector + CURRENT->current_nr_sectors <=
-	     ps2esdi[minor(CURRENT->rq_dev)].nr_sects) &&
+	     get_capacity(&ps2esdi_gendisk[unit])) &&
 	    	CURRENT->flags & REQ_CMD) {
 #if 0
 		printk("%s:got request. device : %d minor : %d command : %d  sector : %ld count : %ld\n",
 		       DEVICE_NAME,
-		       DEVICE_NR(CURRENT->rq_dev), minor(CURRENT->rq_dev),
+		       unit, minor(CURRENT->rq_dev),
 		       CURRENT->cmd, CURRENT->sector,
 		       CURRENT->current_nr_sectors);
 #endif
@@ -526,10 +523,10 @@ static void do_ps2esdi_request(request_queue_t * q)
 
 		switch (rq_data_dir(CURRENT)) {
 		case READ:
-			ps2esdi_readwrite(READ, DEVICE_NR(CURRENT->rq_dev), block, count);
+			ps2esdi_readwrite(READ, unit, block, count);
 			break;
 		case WRITE:
-			ps2esdi_readwrite(WRITE, DEVICE_NR(CURRENT->rq_dev), block, count);
+			ps2esdi_readwrite(WRITE, unit, block, count);
 			break;
 		default:
 			printk("%s: Unknown command\n", DEVICE_NAME);
@@ -540,7 +537,7 @@ static void do_ps2esdi_request(request_queue_t * q)
 	/* is request is valid */ 
 	else {
 		printk("Grrr. error. ps2esdi_drives: %d, %lu %lu\n", ps2esdi_drives,
-		       CURRENT->sector, ps2esdi[minor(CURRENT->rq_dev)].nr_sects);
+		       CURRENT->sector, get_capacity(&ps2esdi_gendisk[unit]));
 		end_request(CURRENT, FAIL);
 	}
 

drivers/block/umem.c

@@ -159,9 +159,6 @@ static struct cardinfo cards[MM_MAXCARDS];
 static struct block_device_operations mm_fops;
 static struct timer_list battery_timer;
 
-
-static struct hd_struct mm_partitions[MM_MAXCARDS << MM_SHIFT];
-
 static int num_cards = 0;
 
 static struct gendisk mm_gendisk[MM_MAXCARDS];
@@ -812,7 +809,7 @@ static void del_battery_timer(void)
 static int mm_revalidate(kdev_t i_rdev)
 {
 	int card_number = DEVICE_NR(i_rdev);
-	mm_partitions[minor(i_rdev)].nr_sects = cards[card_number].mm_size << 1;
+	set_capacity(mm_gendisk + card_number, cards[card_number].mm_size << 1);
 	return 0;
 }
 /*
@@ -1192,8 +1189,6 @@ int __init mm_init(void)
 		struct gendisk *disk = mm_gendisk + i;
 		sprintf(mm_names + i*6, "umem%c", 'a'+i);
 		spin_lock_init(&cards[i].lock);
-		disk->part  = mm_partitions + (i << MM_SHIFT);
-		disk->nr_real = 1;
 		disk->major = major_nr;
 		disk->first_minor  = i << MM_SHIFT;
 		disk->major_name = mm_names + i*6;
@@ -1222,10 +1217,8 @@ void __exit mm_cleanup(void)
 
 	del_battery_timer();
 
-	for (i=0; i < num_cards ; i++) {
-		devfs_register_partitions(mm_gendisk + i, i<<MM_SHIFT, 1);
+	for (i=0; i < num_cards ; i++)
 		del_gendisk(mm_gendisk + i);
-	}
 	if (devfs_handle)
 		devfs_unregister(devfs_handle);
 	devfs_handle = NULL;

drivers/block/xd.c

@@ -121,8 +121,6 @@ static unsigned int xd_bases[] __initdata =
 	0xE0000
 };
 
-static struct hd_struct xd_struct[XD_MAXDRIVES << 6];
-
 static spinlock_t xd_lock = SPIN_LOCK_UNLOCKED;
 
 extern struct block_device_operations xd_fops;
@@ -133,17 +131,13 @@ static struct gendisk xd_gendisk[2] = {
 	.first_minor =	0,
 	.major_name =	"xda",
 	.minor_shift =	6,
-	.part =		xd_struct,
 	.fops =		&xd_fops,
-	.nr_real =	1
 },{
 	.major =	MAJOR_NR,
 	.first_minor =	64,
 	.major_name =	"xdb",
 	.minor_shift =	6,
-	.part =		xd_struct + 64,
 	.fops =		&xd_fops,
-	.nr_real =	1
 }
 };
 
@@ -281,15 +275,17 @@ static void do_xd_request (request_queue_t * q)
 		return;
 
 	while (1) {
+		int unit;
 		code = 0;
 		/* do some checking on the request structure */
 		if (blk_queue_empty(QUEUE))
 			return;
 
-		if (DEVICE_NR(CURRENT->rq_dev) < xd_drives
+		unit = DEVICE_NR(CURRENT->rq_dev);
+		if (unit < xd_drives
 		    && (CURRENT->flags & REQ_CMD)
 		    && CURRENT->sector + CURRENT->nr_sectors
-		         <= xd_struct[minor(CURRENT->rq_dev)].nr_sects) {
+		         <= get_capacity(xd_gendisk + unit)) {
 			block = CURRENT->sector;
 			count = CURRENT->nr_sectors;
 
@@ -297,7 +293,7 @@ static void do_xd_request (request_queue_t * q)
 				case READ:
 				case WRITE:
 					for (retry = 0; (retry < XD_RETRIES) && !code; retry++)
-						code = xd_readwrite(rq_data_dir(CURRENT),DEVICE_NR(CURRENT->rq_dev),
+						code = xd_readwrite(rq_data_dir(CURRENT),unit,
 							CURRENT->buffer,block,count);
 					break;
 				default:

drivers/cdrom/cdrom.c

@@ -254,6 +254,7 @@
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/fs.h>
+#include <linux/buffer_head.h>
 #include <linux/major.h>
 #include <linux/types.h>
 #include <linux/errno.h>
@@ -1608,6 +1609,7 @@ int cdrom_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
 		cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
 		if (!CDROM_CAN(CDC_RESET))
 			return -ENOSYS;
+		invalidate_buffers(dev);
 		return cdo->reset(cdi);
 		}
 

drivers/cdrom/cdu31a.c

@@ -331,12 +331,11 @@ static struct timer_list cdu31a_abort_timer;
    from the abort read. */
 static int abort_read_started = 0;
 
-
 /*
- * This routine returns 1 if the disk has been changed since the last
- * check or 0 if it hasn't.
+ * Uniform cdrom interface function
+ * report back, if disc has changed from time of last request.
  */
-static int scd_disk_change(kdev_t full_dev)
+static int scd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
 {
 	int retval;
 
@@ -346,15 +345,6 @@ static int scd_disk_change(kdev_t full_dev)
 	return retval;
 }
 
-/*
- * Uniform cdrom interface function
- * report back, if disc has changed from time of last request.
- */
-static int scd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
-{
-	return scd_disk_change(cdi->dev);
-}
-
 /*
  * Uniform cdrom interface function
  * report back, if drive is ready

drivers/cdrom/mcdx.c

@@ -73,7 +73,6 @@ static const char *mcdx_c_version
 
 #include <linux/major.h>
 #define MAJOR_NR MITSUMI_X_CDROM_MAJOR
-#define DEVICE_NR(device) (minor(device))
 #include <linux/blk.h>
 #include <linux/devfs_fs_kernel.h>
 
@@ -197,7 +196,6 @@ struct s_drive_stuff {
 	void *rreg_status;	/* r status */
 
 	int irq;		/* irq used by this drive */
-	int minor;		/* minor number of this drive */
 	int present;		/* drive present and its capabilities */
 	unsigned char readcmd;	/* read cmd depends on single/double speed */
 	unsigned char playcmd;	/* play should always be single speed */
@@ -207,6 +205,7 @@ struct s_drive_stuff {
 	int lastsector;		/* last block accessible */
 	int status;		/* last operation's error / status */
 	int readerrs;		/* # of blocks read w/o error */
+	struct cdrom_device_info info;
 };
 
 
@@ -305,21 +304,13 @@ static struct cdrom_device_ops mcdx_dops = {
 	    CDC_PLAY_AUDIO | CDC_DRIVE_STATUS,
 };
 
-static struct cdrom_device_info mcdx_info = {
-	ops:&mcdx_dops,
-	speed:2,
-	capacity:1,
-	name:"mcdx",
-};
-
-
 /* KERNEL INTERFACE FUNCTIONS **************************************/
 
 
 static int mcdx_audio_ioctl(struct cdrom_device_info *cdi,
 			    unsigned int cmd, void *arg)
 {
-	struct s_drive_stuff *stuffp = mcdx_stuffp[minor(cdi->dev)];
+	struct s_drive_stuff *stuffp = cdi->handle;
 
 	if (!stuffp->present)
 		return -ENXIO;
@@ -627,7 +618,7 @@ static int mcdx_open(struct cdrom_device_info *cdi, int purpose)
 {
 	struct s_drive_stuff *stuffp;
 	xtrace(OPENCLOSE, "open()\n");
-	stuffp = mcdx_stuffp[minor(cdi->dev)];
+	stuffp = cdi->handle;
 	if (!stuffp->present)
 		return -ENXIO;
 
@@ -776,7 +767,7 @@ static void mcdx_close(struct cdrom_device_info *cdi)
 
 	xtrace(OPENCLOSE, "close()\n");
 
-	stuffp = mcdx_stuffp[minor(cdi->dev)];
+	stuffp = cdi->handle;
 
 	--stuffp->users;
 }
@@ -787,10 +778,9 @@ static int mcdx_media_changed(struct cdrom_device_info *cdi, int disc_nr)
 {
 	struct s_drive_stuff *stuffp;
 
-	xinfo("mcdx_media_changed called for device %s\n",
-	      kdevname(cdi->dev));
+	xinfo("mcdx_media_changed called for device %s\n", cdi->name);
 
-	stuffp = mcdx_stuffp[minor(cdi->dev)];
+	stuffp = cdi->handle;
 	mcdx_getstatus(stuffp, 1);
 
 	if (stuffp->yyy == 0)
@@ -1027,14 +1017,13 @@ void __exit mcdx_exit(void)
 	xinfo("cleanup_module called\n");
 
 	for (i = 0; i < MCDX_NDRIVES; i++) {
-		struct s_drive_stuff *stuffp;
-		if (unregister_cdrom(&mcdx_info)) {
+		struct s_drive_stuff *stuffp = mcdx_stuffp[i];
+		if (!stuffp)
+			continue;
+		if (unregister_cdrom(&stuffp->info)) {
 			printk(KERN_WARNING "Can't unregister cdrom mcdx\n");
 			return;
 		}
-		stuffp = mcdx_stuffp[i];
-		if (!stuffp)
-			continue;
 		release_region((unsigned long) stuffp->wreg_data,
 			       MCDX_IO_SIZE);
 		free_irq(stuffp->irq, NULL);
@@ -1208,15 +1197,19 @@ int __init mcdx_init_drive(int drive)
 	xtrace(INIT, "init() set non dma but irq mode\n");
 	mcdx_config(stuffp, 1);
 
-	stuffp->minor = drive;
+	stuffp->info.ops = &mcdx_dops;
+	stuffp->info.speed = 2;
+	stuffp->info.capacity = 1;
+	stuffp->info.handle = stuffp;
+	sprintf(stuffp->info.name, "mcdx%d", drive);
+	stuffp->info.dev = mk_kdev(MAJOR_NR, drive);
 
 	sprintf(msg, " mcdx: Mitsumi CD-ROM installed at 0x%3p, irq %d."
 		" (Firmware version %c %x)\n",
 		stuffp->wreg_data, stuffp->irq, version.code, version.ver);
 	mcdx_stuffp[drive] = stuffp;
 	xtrace(INIT, "init() mcdx_stuffp[%d] = %p\n", drive, stuffp);
-	mcdx_info.dev = mk_kdev(MAJOR_NR, 0);
-	if (register_cdrom(&mcdx_info) != 0) {
+	if (register_cdrom(&stuffp->info) != 0) {
 		printk("Cannot register Mitsumi CD-ROM!\n");
 		release_region((unsigned long) stuffp->wreg_data,
 			       MCDX_IO_SIZE);
@@ -1227,7 +1220,7 @@ int __init mcdx_init_drive(int drive)
 		blk_cleanup_queue(BLK_DEFAULT_QUEUE(MAJOR_NR));
 		return 2;
 	}
-	devfs_plain_cdrom(&mcdx_info, &mcdx_bdops);
+	devfs_plain_cdrom(&stuffp->info, &mcdx_bdops);
 	printk(msg);
 	return 0;
 }
@@ -1685,7 +1678,7 @@ mcdx_playtrk(struct s_drive_stuff *stuffp, const struct cdrom_ti *ti)
 
 static int mcdx_tray_move(struct cdrom_device_info *cdi, int position)
 {
-	struct s_drive_stuff *stuffp = mcdx_stuffp[minor(cdi->dev)];
+	struct s_drive_stuff *stuffp = cdi->handle;
 
 	if (!stuffp->present)
 		return -ENXIO;
@@ -1875,7 +1868,7 @@ static int mcdx_reset(struct s_drive_stuff *stuffp, enum resetmodes mode, int tr
 
 static int mcdx_lockdoor(struct cdrom_device_info *cdi, int lock)
 {
-	struct s_drive_stuff *stuffp = mcdx_stuffp[minor(cdi->dev)];
+	struct s_drive_stuff *stuffp = cdi->handle;
 	char cmd[2] = { 0xfe };
 
 	if (!(stuffp->present & DOOR))

drivers/ide/ide-disk.c

@@ -1516,8 +1516,6 @@ static void idedisk_add_settings(ide_drive_t *drive)
 
 static void idedisk_setup (ide_drive_t *drive)
 {
-	int i;
-	
 	struct hd_driveid *id = drive->id;
 	unsigned long capacity;
 	
@@ -1538,15 +1536,6 @@ static void idedisk_setup (ide_drive_t *drive)
 			drive->doorlocking = 1;
 		}
 	}
-	for (i = 0; i < MAX_DRIVES; ++i) {
-		ide_hwif_t *hwif = HWIF(drive);
-
-		if (drive != &hwif->drives[i]) continue;
-		hwif->gd[i]->de_arr[i] = drive->de;
-		if (drive->removable)
-			hwif->gd[i]->flags[i] |= GENHD_FL_REMOVABLE;
-		break;
-	}
 
 #if 1
 	(void) probe_lba_addressing(drive, 1);
@@ -1629,9 +1618,7 @@ static void idedisk_setup (ide_drive_t *drive)
 
 static int idedisk_cleanup (ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
-	int unit = drive - hwif->drives;
-	struct gendisk *g = hwif->gd[unit];
+	struct gendisk *g = drive->disk;
 	if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
 		if (do_idedisk_flushcache(drive))
 			printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
@@ -1683,9 +1670,7 @@ MODULE_DESCRIPTION("ATA DISK Driver");
 
 static int idedisk_reinit(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
-	int unit = drive - hwif->drives;
-	struct gendisk *g = hwif->gd[unit];
+	struct gendisk *g = drive->disk;
 
 	/* strstr("foo", "") is non-NULL */
 	if (!strstr("ide-disk", drive->driver_req))
@@ -1714,6 +1699,9 @@ static int idedisk_reinit(ide_drive_t *drive)
 	}
 	DRIVER(drive)->busy--;
 	g->minor_shift = PARTN_BITS;
+	g->de = drive->de;
+	g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
+	g->flags |= GENHD_FL_DEVFS;
 	add_gendisk(g);
 	register_disk(g, mk_kdev(g->major,g->first_minor),
 		      1<<g->minor_shift, ide_fops,