Merge branch 'master' into gfs2

16 files changed, 417 insertions, 150 deletions

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index a360215..b3f639f 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -770,7 +770,7 @@ static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
 static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
 {
   DAC960_Controller_T *Controller = Command->Controller;
-  DECLARE_COMPLETION(Completion);
+  DECLARE_COMPLETION_ONSTACK(Completion);
   unsigned long flags;
   Command->Completion = &Completion;
 
@@ -3331,7 +3331,7 @@ static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_
 		Command->DmaDirection = PCI_DMA_TODEVICE;
 		Command->CommandType = DAC960_WriteCommand;
 	}
-	Command->Completion = Request->waiting;
+	Command->Completion = Request->end_io_data;
 	Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
 	Command->BlockNumber = Request->sector;
 	Command->BlockCount = Request->nr_sectors;
diff --git a/drivers/block/DAC960.h b/drivers/block/DAC960.h
index a82f37f..f9217c3 100644
--- a/drivers/block/DAC960.h
+++ b/drivers/block/DAC960.h
@@ -71,7 +71,7 @@
   Define a Boolean data type.
 */
 
-typedef enum { false, true } __attribute__ ((packed)) boolean;
+typedef bool boolean;
 
 
 /*
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index b5382ce..422e31d 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -2,6 +2,8 @@
 # Block device driver configuration
 #
 
+if BLOCK
+
 menu "Block devices"
 
 config BLK_DEV_FD
@@ -468,3 +470,5 @@ config ATA_OVER_ETH
 	devices like the Coraid EtherDrive (R) Storage Blade.
 
 endmenu
+
+endif
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 2cd3391..99f87ef 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -144,13 +144,13 @@ static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
 			   int clear_all);
 
-static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
-				int withirq, unsigned int *total_size,
-				unsigned int *block_size);
-static void cciss_geometry_inquiry(int ctlr, int logvol, int withirq,
-				   unsigned int total_size,
-				   unsigned int block_size,
-				   InquiryData_struct *inq_buff,
+static void cciss_read_capacity(int ctlr, int logvol, int withirq,
+			sector_t *total_size, unsigned int *block_size);
+static void cciss_read_capacity_16(int ctlr, int logvol, int withirq,
+			sector_t *total_size, unsigned int *block_size);
+static void cciss_geometry_inquiry(int ctlr, int logvol,
+			int withirq, sector_t total_size,
+			unsigned int block_size, InquiryData_struct *inq_buff,
 				   drive_info_struct *drv);
 static void cciss_getgeometry(int cntl_num);
 static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
@@ -879,7 +879,7 @@ static int cciss_ioctl(struct inode *inode, struct file *filep,
 			char *buff = NULL;
 			u64bit temp64;
 			unsigned long flags;
-			DECLARE_COMPLETION(wait);
+			DECLARE_COMPLETION_ONSTACK(wait);
 
 			if (!arg)
 				return -EINVAL;
@@ -997,7 +997,7 @@ static int cciss_ioctl(struct inode *inode, struct file *filep,
 			BYTE sg_used = 0;
 			int status = 0;
 			int i;
-			DECLARE_COMPLETION(wait);
+			DECLARE_COMPLETION_ONSTACK(wait);
 			__u32 left;
 			__u32 sz;
 			BYTE __user *data_ptr;
@@ -1229,7 +1229,6 @@ static inline void complete_buffers(struct bio *bio, int status)
 		int nr_sectors = bio_sectors(bio);
 
 		bio->bi_next = NULL;
-		blk_finished_io(len);
 		bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
 		bio = xbh;
 	}
@@ -1326,10 +1325,9 @@ static void cciss_update_drive_info(int ctlr, int drv_index)
 {
 	ctlr_info_t *h = hba[ctlr];
 	struct gendisk *disk;
-	ReadCapdata_struct *size_buff = NULL;
 	InquiryData_struct *inq_buff = NULL;
 	unsigned int block_size;
-	unsigned int total_size;
+	sector_t total_size;
 	unsigned long flags = 0;
 	int ret = 0;
 
@@ -1348,15 +1346,25 @@ static void cciss_update_drive_info(int ctlr, int drv_index)
 		return;
 
 	/* Get information about the disk and modify the driver structure */
-	size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
-	if (size_buff == NULL)
-		goto mem_msg;
 	inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
 	if (inq_buff == NULL)
 		goto mem_msg;
 
-	cciss_read_capacity(ctlr, drv_index, size_buff, 1,
+	cciss_read_capacity(ctlr, drv_index, 1,
 			    &total_size, &block_size);
+
+	/* total size = last LBA + 1 */
+	/* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */
+	/* so we assume this volume this must be >2TB in size */
+	if (total_size == (__u32) 0) {
+		cciss_read_capacity_16(ctlr, drv_index, 1,
+		&total_size, &block_size);
+		h->cciss_read = CCISS_READ_16;
+		h->cciss_write = CCISS_WRITE_16;
+	} else {
+		h->cciss_read = CCISS_READ_10;
+		h->cciss_write = CCISS_WRITE_10;
+	}
 	cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
 			       inq_buff, &h->drv[drv_index]);
 
@@ -1392,7 +1400,6 @@ static void cciss_update_drive_info(int ctlr, int drv_index)
 	}
 
       freeret:
-	kfree(size_buff);
 	kfree(inq_buff);
 	return;
       mem_msg:
@@ -1717,6 +1724,22 @@ static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_
 			c->Request.Timeout = 0;
 			c->Request.CDB[0] = cmd;
 			break;
+		case CCISS_READ_CAPACITY_16:
+			c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
+			c->Header.LUN.LogDev.Mode = 1;
+			c->Request.CDBLen = 16;
+			c->Request.Type.Attribute = ATTR_SIMPLE;
+			c->Request.Type.Direction = XFER_READ;
+			c->Request.Timeout = 0;
+			c->Request.CDB[0] = cmd;
+			c->Request.CDB[1] = 0x10;
+			c->Request.CDB[10] = (size >> 24) & 0xFF;
+			c->Request.CDB[11] = (size >> 16) & 0xFF;
+			c->Request.CDB[12] = (size >> 8) & 0xFF;
+			c->Request.CDB[13] = size & 0xFF;
+			c->Request.Timeout = 0;
+			c->Request.CDB[0] = cmd;
+			break;
 		case CCISS_CACHE_FLUSH:
 			c->Request.CDBLen = 12;
 			c->Request.Type.Attribute = ATTR_SIMPLE;
@@ -1750,6 +1773,7 @@ static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_
 			memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
 			c->Request.CDB[0] = cmd;	/* reset */
 			c->Request.CDB[1] = 0x04;	/* reset a LUN */
+			break;
 		case 3:	/* No-Op message */
 			c->Request.CDBLen = 1;
 			c->Request.Type.Attribute = ATTR_SIMPLE;
@@ -1792,7 +1816,7 @@ static int sendcmd_withirq(__u8 cmd,
 	u64bit buff_dma_handle;
 	unsigned long flags;
 	int return_status;
-	DECLARE_COMPLETION(wait);
+	DECLARE_COMPLETION_ONSTACK(wait);
 
 	if ((c = cmd_alloc(h, 0)) == NULL)
 		return -ENOMEM;
@@ -1893,12 +1917,15 @@ static int sendcmd_withirq(__u8 cmd,
 }
 
 static void cciss_geometry_inquiry(int ctlr, int logvol,
-				   int withirq, unsigned int total_size,
+				   int withirq, sector_t total_size,
 				   unsigned int block_size,
 				   InquiryData_struct *inq_buff,
 				   drive_info_struct *drv)
 {
 	int return_code;
+	unsigned long t;
+	unsigned long rem;
+
 	memset(inq_buff, 0, sizeof(InquiryData_struct));
 	if (withirq)
 		return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
@@ -1917,10 +1944,10 @@ static void cciss_geometry_inquiry(int ctlr, int logvol,
 			drv->nr_blocks = total_size;
 			drv->heads = 255;
 			drv->sectors = 32;	// Sectors per track
-			drv->cylinders = total_size / 255 / 32;
+			t = drv->heads * drv->sectors;
+			drv->cylinders = total_size;
+			rem = do_div(drv->cylinders, t);
 		} else {
-			unsigned int t;
-
 			drv->block_size = block_size;
 			drv->nr_blocks = total_size;
 			drv->heads = inq_buff->data_byte[6];
@@ -1930,42 +1957,84 @@ static void cciss_geometry_inquiry(int ctlr, int logvol,
 			drv->raid_level = inq_buff->data_byte[8];
 			t = drv->heads * drv->sectors;
 			if (t > 1) {
-				drv->cylinders = total_size / t;
+				drv->cylinders = total_size;
+				rem = do_div(drv->cylinders, t);
 			}
 		}
 	} else {		/* Get geometry failed */
 		printk(KERN_WARNING "cciss: reading geometry failed\n");
 	}
-	printk(KERN_INFO "      heads= %d, sectors= %d, cylinders= %d\n\n",
+	printk(KERN_INFO "      heads=%d, sectors=%d, cylinders=%d\n\n",
 	       drv->heads, drv->sectors, drv->cylinders);
 }
 
 static void
-cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
-		    int withirq, unsigned int *total_size,
+cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size,
 		    unsigned int *block_size)
 {
+	ReadCapdata_struct *buf;
 	int return_code;
-	memset(buf, 0, sizeof(*buf));
+	buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
+	if (buf == NULL) {
+		printk(KERN_WARNING "cciss: out of memory\n");
+		return;
+	}
+	memset(buf, 0, sizeof(ReadCapdata_struct));
 	if (withirq)
 		return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
-					      ctlr, buf, sizeof(*buf), 1,
-					      logvol, 0, TYPE_CMD);
+				ctlr, buf, sizeof(ReadCapdata_struct),
+					1, logvol, 0, TYPE_CMD);
 	else
 		return_code = sendcmd(CCISS_READ_CAPACITY,
-				      ctlr, buf, sizeof(*buf), 1, logvol, 0,
-				      NULL, TYPE_CMD);
+				ctlr, buf, sizeof(ReadCapdata_struct),
+					1, logvol, 0, NULL, TYPE_CMD);
 	if (return_code == IO_OK) {
-		*total_size =
-		    be32_to_cpu(*((__be32 *) & buf->total_size[0])) + 1;
-		*block_size = be32_to_cpu(*((__be32 *) & buf->block_size[0]));
+		*total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1;
+		*block_size = be32_to_cpu(*(__u32 *) buf->block_size);
 	} else {		/* read capacity command failed */
 		printk(KERN_WARNING "cciss: read capacity failed\n");
 		*total_size = 0;
 		*block_size = BLOCK_SIZE;
 	}
-	printk(KERN_INFO "      blocks= %u block_size= %d\n",
+	if (*total_size != (__u32) 0)
+		printk(KERN_INFO "      blocks= %lld block_size= %d\n",
+		*total_size, *block_size);
+	kfree(buf);
+	return;
+}
+
+static void
+cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, 				unsigned int *block_size)
+{
+	ReadCapdata_struct_16 *buf;
+	int return_code;
+	buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
+	if (buf == NULL) {
+		printk(KERN_WARNING "cciss: out of memory\n");
+		return;
+	}
+	memset(buf, 0, sizeof(ReadCapdata_struct_16));
+	if (withirq) {
+		return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
+			ctlr, buf, sizeof(ReadCapdata_struct_16),
+				1, logvol, 0, TYPE_CMD);
+	}
+	else {
+		return_code = sendcmd(CCISS_READ_CAPACITY_16,
+			ctlr, buf, sizeof(ReadCapdata_struct_16),
+				1, logvol, 0, NULL, TYPE_CMD);
+	}
+	if (return_code == IO_OK) {
+		*total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1;
+		*block_size = be32_to_cpu(*(__u32 *) buf->block_size);
+	} else {		/* read capacity command failed */
+		printk(KERN_WARNING "cciss: read capacity failed\n");
+		*total_size = 0;
+		*block_size = BLOCK_SIZE;
+	}
+	printk(KERN_INFO "      blocks= %lld block_size= %d\n",
 	       *total_size, *block_size);
+	kfree(buf);
 	return;
 }
 
@@ -1976,8 +2045,7 @@ static int cciss_revalidate(struct gendisk *disk)
 	int logvol;
 	int FOUND = 0;
 	unsigned int block_size;
-	unsigned int total_size;
-	ReadCapdata_struct *size_buff = NULL;
+	sector_t total_size;
 	InquiryData_struct *inq_buff = NULL;
 
 	for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
@@ -1990,27 +2058,24 @@ static int cciss_revalidate(struct gendisk *disk)
 	if (!FOUND)
 		return 1;
 
-	size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
-	if (size_buff == NULL) {
-		printk(KERN_WARNING "cciss: out of memory\n");
-		return 1;
-	}
 	inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
 	if (inq_buff == NULL) {
 		printk(KERN_WARNING "cciss: out of memory\n");
-		kfree(size_buff);
 		return 1;
 	}
-
-	cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size,
-			    &block_size);
+	if (h->cciss_read == CCISS_READ_10) {
+		cciss_read_capacity(h->ctlr, logvol, 1,
+					&total_size, &block_size);
+	} else {
+		cciss_read_capacity_16(h->ctlr, logvol, 1,
+					&total_size, &block_size);
+	}
 	cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
 			       inq_buff, drv);
 
 	blk_queue_hardsect_size(drv->queue, drv->block_size);
 	set_capacity(disk, drv->nr_blocks);
 
-	kfree(size_buff);
 	kfree(inq_buff);
 	return 0;
 }
@@ -2419,7 +2484,8 @@ static void do_cciss_request(request_queue_t *q)
 {
 	ctlr_info_t *h = q->queuedata;
 	CommandList_struct *c;
-	int start_blk, seg;
+	sector_t start_blk;
+	int seg;
 	struct request *creq;
 	u64bit temp64;
 	struct scatterlist tmp_sg[MAXSGENTRIES];
@@ -2463,10 +2529,10 @@ static void do_cciss_request(request_queue_t *q)
 	c->Request.Type.Type = TYPE_CMD;	// It is a command.
 	c->Request.Type.Attribute = ATTR_SIMPLE;
 	c->Request.Type.Direction =
-	    (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
+	    (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
 	c->Request.Timeout = 0;	// Don't time out
 	c->Request.CDB[0] =
-	    (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
+	    (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
 	start_blk = creq->sector;
 #ifdef CCISS_DEBUG
 	printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector,
@@ -2500,15 +2566,33 @@ static void do_cciss_request(request_queue_t *q)
 #endif				/* CCISS_DEBUG */
 
 	c->Header.SGList = c->Header.SGTotal = seg;
-	c->Request.CDB[1] = 0;
-	c->Request.CDB[2] = (start_blk >> 24) & 0xff;	//MSB
-	c->Request.CDB[3] = (start_blk >> 16) & 0xff;
-	c->Request.CDB[4] = (start_blk >> 8) & 0xff;
-	c->Request.CDB[5] = start_blk & 0xff;
-	c->Request.CDB[6] = 0;	// (sect >> 24) & 0xff; MSB
-	c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff;
-	c->Request.CDB[8] = creq->nr_sectors & 0xff;
-	c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
+	if(h->cciss_read == CCISS_READ_10) {
+		c->Request.CDB[1] = 0;
+		c->Request.CDB[2] = (start_blk >> 24) & 0xff;	//MSB
+		c->Request.CDB[3] = (start_blk >> 16) & 0xff;
+		c->Request.CDB[4] = (start_blk >> 8) & 0xff;
+		c->Request.CDB[5] = start_blk & 0xff;
+		c->Request.CDB[6] = 0;	// (sect >> 24) & 0xff; MSB
+		c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff;
+		c->Request.CDB[8] = creq->nr_sectors & 0xff;
+		c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
+	} else {
+		c->Request.CDBLen = 16;
+		c->Request.CDB[1]= 0;
+		c->Request.CDB[2]= (start_blk >> 56) & 0xff;	//MSB
+		c->Request.CDB[3]= (start_blk >> 48) & 0xff;
+		c->Request.CDB[4]= (start_blk >> 40) & 0xff;
+		c->Request.CDB[5]= (start_blk >> 32) & 0xff;
+		c->Request.CDB[6]= (start_blk >> 24) & 0xff;
+		c->Request.CDB[7]= (start_blk >> 16) & 0xff;
+		c->Request.CDB[8]= (start_blk >>  8) & 0xff;
+		c->Request.CDB[9]= start_blk & 0xff;
+		c->Request.CDB[10]= (creq->nr_sectors >>  24) & 0xff;
+		c->Request.CDB[11]= (creq->nr_sectors >>  16) & 0xff;
+		c->Request.CDB[12]= (creq->nr_sectors >>  8) & 0xff;
+		c->Request.CDB[13]= creq->nr_sectors & 0xff;
+		c->Request.CDB[14] = c->Request.CDB[15] = 0;
+	}
 
 	spin_lock_irq(q->queue_lock);
 
@@ -2518,9 +2602,9 @@ static void do_cciss_request(request_queue_t *q)
 		h->maxQsinceinit = h->Qdepth;
 
 	goto queue;
-      full:
+full:
 	blk_stop_queue(q);
-      startio:
+startio:
 	/* We will already have the driver lock here so not need
 	 * to lock it.
 	 */
@@ -2948,31 +3032,23 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
 static void cciss_getgeometry(int cntl_num)
 {
 	ReportLunData_struct *ld_buff;
-	ReadCapdata_struct *size_buff;
 	InquiryData_struct *inq_buff;
 	int return_code;
 	int i;
 	int listlength = 0;
 	__u32 lunid = 0;
 	int block_size;
-	int total_size;
+	sector_t total_size;
 
 	ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
 	if (ld_buff == NULL) {
 		printk(KERN_ERR "cciss: out of memory\n");
 		return;
 	}
-	size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
-	if (size_buff == NULL) {
-		printk(KERN_ERR "cciss: out of memory\n");
-		kfree(ld_buff);
-		return;
-	}
 	inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
 	if (inq_buff == NULL) {
 		printk(KERN_ERR "cciss: out of memory\n");
 		kfree(ld_buff);
-		kfree(size_buff);
 		return;
 	}
 	/* Get the firmware version */
@@ -3027,7 +3103,6 @@ static void cciss_getgeometry(int cntl_num)
 #endif				/* CCISS_DEBUG */
 
 	hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1;
-//      for(i=0; i<  hba[cntl_num]->num_luns; i++)
 	for (i = 0; i < CISS_MAX_LUN; i++) {
 		if (i < hba[cntl_num]->num_luns) {
 			lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
@@ -3046,8 +3121,26 @@ static void cciss_getgeometry(int cntl_num)
 			       ld_buff->LUN[i][2], ld_buff->LUN[i][3],
 			       hba[cntl_num]->drv[i].LunID);
 #endif				/* CCISS_DEBUG */
-			cciss_read_capacity(cntl_num, i, size_buff, 0,
+
+		/* testing to see if 16-byte CDBs are already being used */
+		if(hba[cntl_num]->cciss_read == CCISS_READ_16) {
+			cciss_read_capacity_16(cntl_num, i, 0,
 					    &total_size, &block_size);
+			goto geo_inq;
+		}
+		cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size);
+
+		/* total_size = last LBA + 1 */
+		if(total_size == (__u32) 0) {
+			cciss_read_capacity_16(cntl_num, i, 0,
+			&total_size, &block_size);
+			hba[cntl_num]->cciss_read = CCISS_READ_16;
+			hba[cntl_num]->cciss_write = CCISS_WRITE_16;
+		} else {
+			hba[cntl_num]->cciss_read = CCISS_READ_10;
+			hba[cntl_num]->cciss_write = CCISS_WRITE_10;
+		}
+geo_inq:
 			cciss_geometry_inquiry(cntl_num, i, 0, total_size,
 					       block_size, inq_buff,
 					       &hba[cntl_num]->drv[i]);
@@ -3057,7 +3150,6 @@ static void cciss_getgeometry(int cntl_num)
 		}
 	}
 	kfree(ld_buff);
-	kfree(size_buff);
 	kfree(inq_buff);
 }
 
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 868e0d8..562235c 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -76,6 +76,9 @@ struct ctlr_info
 	unsigned int intr[4];
 	unsigned int msix_vector;
 	unsigned int msi_vector;
+	BYTE	cciss_read;
+	BYTE	cciss_write;
+	BYTE	cciss_read_capacity;
 
 	// information about each logical volume
 	drive_info_struct drv[CISS_MAX_LUN];
diff --git a/drivers/block/cciss_cmd.h b/drivers/block/cciss_cmd.h
index 53fea54..4af7c4c 100644
--- a/drivers/block/cciss_cmd.h
+++ b/drivers/block/cciss_cmd.h
@@ -118,11 +118,34 @@ typedef struct _ReadCapdata_struct
   BYTE block_size[4];	// Size of blocks in bytes
 } ReadCapdata_struct;
 
-// 12 byte commands not implemented in firmware yet. 
-// #define CCISS_READ 	0xa8	// Read(12)
-// #define CCISS_WRITE	0xaa	// Write(12)
- #define CCISS_READ   0x28    // Read(10)
- #define CCISS_WRITE  0x2a    // Write(10)
+#define CCISS_READ_CAPACITY_16 0x9e /* Read Capacity 16 */
+
+/* service action to differentiate a 16 byte read capacity from
+   other commands that use the 0x9e SCSI op code */
+
+#define CCISS_READ_CAPACITY_16_SERVICE_ACT 0x10
+
+typedef struct _ReadCapdata_struct_16
+{
+	BYTE total_size[8];   /* Total size in blocks */
+	BYTE block_size[4];   /* Size of blocks in bytes */
+	BYTE prot_en:1;       /* protection enable bit */
+	BYTE rto_en:1;        /* reference tag own enable bit */
+	BYTE reserved:6;      /* reserved bits */
+	BYTE reserved2[18];   /* reserved bytes per spec */
+} ReadCapdata_struct_16;
+
+/* Define the supported read/write commands for cciss based controllers */
+
+#define CCISS_READ_10   0x28    /* Read(10)  */
+#define CCISS_WRITE_10  0x2a    /* Write(10) */
+#define CCISS_READ_16   0x88    /* Read(16)  */
+#define CCISS_WRITE_16  0x8a    /* Write(16) */
+
+/* Define the CDB lengths supported by cciss based controllers */
+
+#define CDB_LEN10	10
+#define CDB_LEN16	16
 
 // BMIC commands 
 #define BMIC_READ 0x26
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 05f79d7..bb15051 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -766,7 +766,7 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
 			int direction)
 {
 	unsigned long flags;
-	DECLARE_COMPLETION(wait);
+	DECLARE_COMPLETION_ONSTACK(wait);
 
 	cp->cmd_type = CMD_IOCTL_PEND;		// treat this like an ioctl 
 	cp->scsi_cmd = NULL;
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 78082ed..4abc193 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -989,7 +989,6 @@ static inline void complete_buffers(struct bio *bio, int ok)
 		xbh = bio->bi_next;
 		bio->bi_next = NULL;
 		
-		blk_finished_io(nr_sectors);
 		bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO);
 
 		bio = xbh;
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index ad1d706..629c576 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -2991,8 +2991,8 @@ static void do_fd_request(request_queue_t * q)
 	if (usage_count == 0) {
 		printk("warning: usage count=0, current_req=%p exiting\n",
 		       current_req);
-		printk("sect=%ld flags=%lx\n", (long)current_req->sector,
-		       current_req->flags);
+		printk("sect=%ld type=%x flags=%x\n", (long)current_req->sector,
+		       current_req->cmd_type, current_req->cmd_flags);
 		return;
 	}
 	if (test_bit(0, &fdc_busy)) {
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index c774121..d6bb8da 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -66,12 +66,14 @@
 #include <linux/swap.h>
 #include <linux/slab.h>
 #include <linux/loop.h>
+#include <linux/compat.h>
 #include <linux/suspend.h>
 #include <linux/writeback.h>
 #include <linux/buffer_head.h>		/* for invalidate_bdev() */
 #include <linux/completion.h>
 #include <linux/highmem.h>
 #include <linux/gfp.h>
+#include <linux/kthread.h>
 
 #include <asm/uaccess.h>
 
@@ -522,15 +524,12 @@ static int loop_make_request(request_queue_t *q, struct bio *old_bio)
 		goto out;
 	if (unlikely(rw == WRITE && (lo->lo_flags & LO_FLAGS_READ_ONLY)))
 		goto out;
-	lo->lo_pending++;
 	loop_add_bio(lo, old_bio);
+	wake_up(&lo->lo_event);
 	spin_unlock_irq(&lo->lo_lock);
-	complete(&lo->lo_bh_done);
 	return 0;
 
 out:
-	if (lo->lo_pending == 0)
-		complete(&lo->lo_bh_done);
 	spin_unlock_irq(&lo->lo_lock);
 	bio_io_error(old_bio, old_bio->bi_size);
 	return 0;
@@ -570,14 +569,18 @@ static inline void loop_handle_bio(struct loop_device *lo, struct bio *bio)
  * to avoid blocking in our make_request_fn. it also does loop decrypting
  * on reads for block backed loop, as that is too heavy to do from
  * b_end_io context where irqs may be disabled.
+ *
+ * Loop explanation:  loop_clr_fd() sets lo_state to Lo_rundown before
+ * calling kthread_stop().  Therefore once kthread_should_stop() is
+ * true, make_request will not place any more requests.  Therefore
+ * once kthread_should_stop() is true and lo_bio is NULL, we are
+ * done with the loop.
  */
 static int loop_thread(void *data)
 {
 	struct loop_device *lo = data;
 	struct bio *bio;
 
-	daemonize("loop%d", lo->lo_number);
-
 	/*
 	 * loop can be used in an encrypted device,
 	 * hence, it mustn't be stopped at all
@@ -587,47 +590,21 @@ static int loop_thread(void *data)
 
 	set_user_nice(current, -20);
 
-	lo->lo_state = Lo_bound;
-	lo->lo_pending = 1;
+	while (!kthread_should_stop() || lo->lo_bio) {
 
-	/*
-	 * complete it, we are running
-	 */
-	complete(&lo->lo_done);
-
-	for (;;) {
-		int pending;
+		wait_event_interruptible(lo->lo_event,
+				lo->lo_bio || kthread_should_stop());
 
-		if (wait_for_completion_interruptible(&lo->lo_bh_done))
+		if (!lo->lo_bio)
 			continue;
-
 		spin_lock_irq(&lo->lo_lock);
-
-		/*
-		 * could be completed because of tear-down, not pending work
-		 */
-		if (unlikely(!lo->lo_pending)) {
-			spin_unlock_irq(&lo->lo_lock);
-			break;
-		}
-
 		bio = loop_get_bio(lo);
-		lo->lo_pending--;
-		pending = lo->lo_pending;
 		spin_unlock_irq(&lo->lo_lock);
 
 		BUG_ON(!bio);
 		loop_handle_bio(lo, bio);
-
-		/*
-		 * upped both for pending work and tear-down, lo_pending
-		 * will hit zero then
-		 */
-		if (unlikely(!pending))
-			break;
 	}
 
-	complete(&lo->lo_done);
 	return 0;
 }
 
@@ -840,12 +817,26 @@ static int loop_set_fd(struct loop_device *lo, struct file *lo_file,
 
 	set_blocksize(bdev, lo_blocksize);
 
-	error = kernel_thread(loop_thread, lo, CLONE_KERNEL);
-	if (error < 0)
-		goto out_putf;
-	wait_for_completion(&lo->lo_done);
+	lo->lo_thread = kthread_create(loop_thread, lo, "loop%d",
+						lo->lo_number);
+	if (IS_ERR(lo->lo_thread)) {
+		error = PTR_ERR(lo->lo_thread);
+		goto out_clr;
+	}
+	lo->lo_state = Lo_bound;
+	wake_up_process(lo->lo_thread);
 	return 0;
 
+out_clr:
+	lo->lo_thread = NULL;
+	lo->lo_device = NULL;
+	lo->lo_backing_file = NULL;
+	lo->lo_flags = 0;
+	set_capacity(disks[lo->lo_number], 0);
+	invalidate_bdev(bdev, 0);
+	bd_set_size(bdev, 0);
+	mapping_set_gfp_mask(mapping, lo->old_gfp_mask);
+	lo->lo_state = Lo_unbound;
  out_putf:
 	fput(file);
  out:
@@ -907,12 +898,9 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
 
 	spin_lock_irq(&lo->lo_lock);
 	lo->lo_state = Lo_rundown;
-	lo->lo_pending--;
-	if (!lo->lo_pending)
-		complete(&lo->lo_bh_done);
 	spin_unlock_irq(&lo->lo_lock);
 
-	wait_for_completion(&lo->lo_done);
+	kthread_stop(lo->lo_thread);
 
 	lo->lo_backing_file = NULL;
 
@@ -925,6 +913,7 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
 	lo->lo_sizelimit = 0;
 	lo->lo_encrypt_key_size = 0;
 	lo->lo_flags = 0;
+	lo->lo_thread = NULL;
 	memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE);
 	memset(lo->lo_crypt_name, 0, LO_NAME_SIZE);
 	memset(lo->lo_file_name, 0, LO_NAME_SIZE);
@@ -1177,6 +1166,162 @@ static int lo_ioctl(struct inode * inode, struct file * file,
 	return err;
 }
 
+#ifdef CONFIG_COMPAT
+struct compat_loop_info {
+	compat_int_t	lo_number;      /* ioctl r/o */
+	compat_dev_t	lo_device;      /* ioctl r/o */
+	compat_ulong_t	lo_inode;       /* ioctl r/o */
+	compat_dev_t	lo_rdevice;     /* ioctl r/o */
+	compat_int_t	lo_offset;
+	compat_int_t	lo_encrypt_type;
+	compat_int_t	lo_encrypt_key_size;    /* ioctl w/o */
+	compat_int_t	lo_flags;       /* ioctl r/o */
+	char		lo_name[LO_NAME_SIZE];
+	unsigned char	lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
+	compat_ulong_t	lo_init[2];
+	char		reserved[4];
+};
+
+/*
+ * Transfer 32-bit compatibility structure in userspace to 64-bit loop info
+ * - noinlined to reduce stack space usage in main part of driver
+ */
+static noinline int
+loop_info64_from_compat(const struct compat_loop_info *arg,
+			struct loop_info64 *info64)
+{
+	struct compat_loop_info info;
+
+	if (copy_from_user(&info, arg, sizeof(info)))
+		return -EFAULT;
+
+	memset(info64, 0, sizeof(*info64));
+	info64->lo_number = info.lo_number;
+	info64->lo_device = info.lo_device;
+	info64->lo_inode = info.lo_inode;
+	info64->lo_rdevice = info.lo_rdevice;
+	info64->lo_offset = info.lo_offset;
+	info64->lo_sizelimit = 0;
+	info64->lo_encrypt_type = info.lo_encrypt_type;
+	info64->lo_encrypt_key_size = info.lo_encrypt_key_size;
+	info64->lo_flags = info.lo_flags;
+	info64->lo_init[0] = info.lo_init[0];
+	info64->lo_init[1] = info.lo_init[1];
+	if (info.lo_encrypt_type == LO_CRYPT_CRYPTOAPI)
+		memcpy(info64->lo_crypt_name, info.lo_name, LO_NAME_SIZE);
+	else
+		memcpy(info64->lo_file_name, info.lo_name, LO_NAME_SIZE);
+	memcpy(info64->lo_encrypt_key, info.lo_encrypt_key, LO_KEY_SIZE);
+	return 0;
+}
+
+/*
+ * Transfer 64-bit loop info to 32-bit compatibility structure in userspace
+ * - noinlined to reduce stack space usage in main part of driver
+ */
+static noinline int
+loop_info64_to_compat(const struct loop_info64 *info64,
+		      struct compat_loop_info __user *arg)
+{
+	struct compat_loop_info info;
+
+	memset(&info, 0, sizeof(info));
+	info.lo_number = info64->lo_number;
+	info.lo_device = info64->lo_device;
+	info.lo_inode = info64->lo_inode;
+	info.lo_rdevice = info64->lo_rdevice;
+	info.lo_offset = info64->lo_offset;
+	info.lo_encrypt_type = info64->lo_encrypt_type;
+	info.lo_encrypt_key_size = info64->lo_encrypt_key_size;
+	info.lo_flags = info64->lo_flags;
+	info.lo_init[0] = info64->lo_init[0];
+	info.lo_init[1] = info64->lo_init[1];
+	if (info.lo_encrypt_type == LO_CRYPT_CRYPTOAPI)
+		memcpy(info.lo_name, info64->lo_crypt_name, LO_NAME_SIZE);
+	else
+		memcpy(info.lo_name, info64->lo_file_name, LO_NAME_SIZE);
+	memcpy(info.lo_encrypt_key, info64->lo_encrypt_key, LO_KEY_SIZE);
+
+	/* error in case values were truncated */
+	if (info.lo_device != info64->lo_device ||
+	    info.lo_rdevice != info64->lo_rdevice ||
+	    info.lo_inode != info64->lo_inode ||
+	    info.lo_offset != info64->lo_offset ||
+	    info.lo_init[0] != info64->lo_init[0] ||
+	    info.lo_init[1] != info64->lo_init[1])
+		return -EOVERFLOW;
+
+	if (copy_to_user(arg, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int
+loop_set_status_compat(struct loop_device *lo,
+		       const struct compat_loop_info __user *arg)
+{
+	struct loop_info64 info64;
+	int ret;
+
+	ret = loop_info64_from_compat(arg, &info64);
+	if (ret < 0)
+		return ret;
+	return loop_set_status(lo, &info64);
+}
+
+static int
+loop_get_status_compat(struct loop_device *lo,
+		       struct compat_loop_info __user *arg)
+{
+	struct loop_info64 info64;
+	int err = 0;
+
+	if (!arg)
+		err = -EINVAL;
+	if (!err)
+		err = loop_get_status(lo, &info64);
+	if (!err)
+		err = loop_info64_to_compat(&info64, arg);
+	return err;
+}
+
+static long lo_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct inode *inode = file->f_dentry->d_inode;
+	struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
+	int err;
+
+	lock_kernel();
+	switch(cmd) {
+	case LOOP_SET_STATUS:
+		mutex_lock(&lo->lo_ctl_mutex);
+		err = loop_set_status_compat(
+			lo, (const struct compat_loop_info __user *) arg);
+		mutex_unlock(&lo->lo_ctl_mutex);
+		break;
+	case LOOP_GET_STATUS:
+		mutex_lock(&lo->lo_ctl_mutex);
+		err = loop_get_status_compat(
+			lo, (struct compat_loop_info __user *) arg);
+		mutex_unlock(&lo->lo_ctl_mutex);
+		break;
+	case LOOP_CLR_FD:
+	case LOOP_GET_STATUS64:
+	case LOOP_SET_STATUS64:
+		arg = (unsigned long) compat_ptr(arg);
+	case LOOP_SET_FD:
+	case LOOP_CHANGE_FD:
+		err = lo_ioctl(inode, file, cmd, arg);
+		break;
+	default:
+		err = -ENOIOCTLCMD;
+		break;
+	}
+	unlock_kernel();
+	return err;
+}
+#endif
+
 static int lo_open(struct inode *inode, struct file *file)
 {
 	struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
@@ -1204,6 +1349,9 @@ static struct block_device_operations lo_fops = {
 	.open =		lo_open,
 	.release =	lo_release,
 	.ioctl =	lo_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl =	lo_compat_ioctl,
+#endif
 };
 
 /*
@@ -1287,9 +1435,9 @@ static int __init loop_init(void)
 		if (!lo->lo_queue)
 			goto out_mem4;
 		mutex_init(&lo->lo_ctl_mutex);
-		init_completion(&lo->lo_done);
-		init_completion(&lo->lo_bh_done);
 		lo->lo_number = i;
+		lo->lo_thread = NULL;
+		init_waitqueue_head(&lo->lo_event);
 		spin_lock_init(&lo->lo_lock);
 		disk->major = LOOP_MAJOR;
 		disk->first_minor = i;
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index bdbade9..9d1035e 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -407,10 +407,10 @@ static void do_nbd_request(request_queue_t * q)
 		struct nbd_device *lo;
 
 		blkdev_dequeue_request(req);
-		dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%lx)\n",
-				req->rq_disk->disk_name, req, req->flags);
+		dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%x)\n",
+				req->rq_disk->disk_name, req, req->cmd_type);
 
-		if (!(req->flags & REQ_CMD))
+		if (!blk_fs_request(req))
 			goto error_out;
 
 		lo = req->rq_disk->private_data;
@@ -489,7 +489,7 @@ static int nbd_ioctl(struct inode *inode, struct file *file,
 	switch (cmd) {
 	case NBD_DISCONNECT:
 	        printk(KERN_INFO "%s: NBD_DISCONNECT\n", lo->disk->disk_name);
-		sreq.flags = REQ_SPECIAL;
+		sreq.cmd_type = REQ_TYPE_SPECIAL;
 		nbd_cmd(&sreq) = NBD_CMD_DISC;
 		/*
 		 * Set these to sane values in case server implementation
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 2403721..40a11e5 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -437,7 +437,7 @@ static char *pd_buf;		/* buffer for request in progress */
 
 static enum action do_pd_io_start(void)
 {
-	if (pd_req->flags & REQ_SPECIAL) {
+	if (blk_special_request(pd_req)) {
 		phase = pd_special;
 		return pd_special();
 	}
@@ -713,20 +713,18 @@ static void do_pd_request(request_queue_t * q)
 static int pd_special_command(struct pd_unit *disk,
 		      enum action (*func)(struct pd_unit *disk))
 {
-	DECLARE_COMPLETION(wait);
+	DECLARE_COMPLETION_ONSTACK(wait);
 	struct request rq;
 	int err = 0;
 
 	memset(&rq, 0, sizeof(rq));
 	rq.errors = 0;
-	rq.rq_status = RQ_ACTIVE;
 	rq.rq_disk = disk->gd;
 	rq.ref_count = 1;
-	rq.waiting = &wait;
+	rq.end_io_data = &wait;
 	rq.end_io = blk_end_sync_rq;
 	blk_insert_request(disk->gd->queue, &rq, 0, func);
 	wait_for_completion(&wait);
-	rq.waiting = NULL;
 	if (rq.errors)
 		err = -EIO;
 	blk_put_request(&rq);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 451b996..a6b2aa6 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -348,7 +348,7 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
 	char sense[SCSI_SENSE_BUFFERSIZE];
 	request_queue_t *q;
 	struct request *rq;
-	DECLARE_COMPLETION(wait);
+	DECLARE_COMPLETION_ONSTACK(wait);
 	int err = 0;
 
 	q = bdev_get_queue(pd->bdev);
@@ -365,17 +365,17 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
 	rq->sense = sense;
 	memset(sense, 0, sizeof(sense));
 	rq->sense_len = 0;
-	rq->flags |= REQ_BLOCK_PC | REQ_HARDBARRIER;
+	rq->cmd_type = REQ_TYPE_BLOCK_PC;
+	rq->cmd_flags |= REQ_HARDBARRIER;
 	if (cgc->quiet)
-		rq->flags |= REQ_QUIET;
+		rq->cmd_flags |= REQ_QUIET;
 	memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
 	if (sizeof(rq->cmd) > CDROM_PACKET_SIZE)
 		memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE);
 	rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
 
 	rq->ref_count++;
-	rq->flags |= REQ_NOMERGE;
-	rq->waiting = &wait;
+	rq->end_io_data = &wait;
 	rq->end_io = blk_end_sync_rq;
 	elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
 	generic_unplug_device(q);
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index cc42e76..f2305ee 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -319,8 +319,8 @@ static void start_request(struct floppy_state *fs)
 		printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
 		       req->rq_disk->disk_name, req->cmd,
 		       (long)req->sector, req->nr_sectors, req->buffer);
-		printk("           rq_status=%d errors=%d current_nr_sectors=%ld\n",
-		       req->rq_status, req->errors, req->current_nr_sectors);
+		printk("           errors=%d current_nr_sectors=%ld\n",
+		       req->errors, req->current_nr_sectors);
 #endif
 
 		if (req->sector < 0 || req->sector >= fs->total_secs) {
diff --git a/drivers/block/swim_iop.c b/drivers/block/swim_iop.c
index 89e3c2f..dfda796e 100644
--- a/drivers/block/swim_iop.c
+++ b/drivers/block/swim_iop.c
@@ -529,8 +529,8 @@ static void start_request(struct floppy_state *fs)
 		printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
 		       CURRENT->rq_disk->disk_name, CURRENT->cmd,
 		       CURRENT->sector, CURRENT->nr_sectors, CURRENT->buffer);
-		printk("           rq_status=%d errors=%d current_nr_sectors=%ld\n",
-		       CURRENT->rq_status, CURRENT->errors, CURRENT->current_nr_sectors);
+		printk("           errors=%d current_nr_sectors=%ld\n",
+		      CURRENT->errors, CURRENT->current_nr_sectors);
 #endif
 
 		if (CURRENT->sector < 0 || CURRENT->sector >= fs->total_secs) {
diff --git a/drivers/block/xd.c b/drivers/block/xd.c
index e828e4c..ebf3025 100644
--- a/drivers/block/xd.c
+++ b/drivers/block/xd.c
@@ -313,7 +313,7 @@ static void do_xd_request (request_queue_t * q)
 		int res = 0;
 		int retry;
 
-		if (!(req->flags & REQ_CMD)) {
+		if (!blk_fs_request(req)) {
 			end_request(req, 0);
 			continue;
 		}