Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block: (153 commits)
  block: add request clone interface (v2)
  floppy: fix hibernation
  ramdisk: remove long-deprecated "ramdisk=" boot-time parameter
  fs/bio.c: add missing __user annotation
  block: prevent possible io_context->refcount overflow
  Add serial number support for virtio_blk, V4a
  block: Add missing bounce_pfn stacking and fix comments
  Revert "block: Fix bounce limit setting in DM"
  cciss: decode unit attention in SCSI error handling code
  cciss: Remove no longer needed sendcmd reject processing code
  cciss: change SCSI error handling routines to work with interrupts enabled.
  cciss: separate error processing and command retrying code in sendcmd_withirq_core()
  cciss: factor out fix target status processing code from sendcmd functions
  cciss: simplify interface of sendcmd() and sendcmd_withirq()
  cciss: factor out core of sendcmd_withirq() for use by SCSI error handling code
  cciss: Use schedule_timeout_uninterruptible in SCSI error handling code
  block: needs to set the residual length of a bidi request
  Revert "block: implement blkdev_readpages"
  block: Fix bounce limit setting in DM
  Removed reference to non-existing file Documentation/PCI/PCI-DMA-mapping.txt
  ...

Manually fix conflicts with tracing updates in:
	block/blk-sysfs.c
	drivers/ide/ide-atapi.c
	drivers/ide/ide-cd.c
	drivers/ide/ide-floppy.c
	drivers/ide/ide-tape.c
	include/trace/events/block.h
	kernel/trace/blktrace.c

1 files changed, 16 insertions, 20 deletions

diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 2eecb779437b..b5621f27c4be 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -584,8 +584,8 @@ static void gdrom_readdisk_dma(struct work_struct *work)
         list_for_each_safe(elem, next, &gdrom_deferred) {
                 req = list_entry(elem, struct request, queuelist);
                 spin_unlock(&gdrom_lock);
-                block = req->sector/GD_TO_BLK + GD_SESSION_OFFSET;
-                block_cnt = req->nr_sectors/GD_TO_BLK;
+                block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;
+                block_cnt = blk_rq_sectors(req)/GD_TO_BLK;
                 ctrl_outl(PHYSADDR(req->buffer), GDROM_DMA_STARTADDR_REG);
                 ctrl_outl(block_cnt * GDROM_HARD_SECTOR, GDROM_DMA_LENGTH_REG);
                 ctrl_outl(1, GDROM_DMA_DIRECTION_REG);
@@ -632,39 +632,35 @@ static void gdrom_readdisk_dma(struct work_struct *work)
                 * before handling ending the request */
                 spin_lock(&gdrom_lock);
                 list_del_init(&req->queuelist);
-                __blk_end_request(req, err, blk_rq_bytes(req));
+                __blk_end_request_all(req, err);
         }
         spin_unlock(&gdrom_lock);
         kfree(read_command);
 }
 
-static void gdrom_request_handler_dma(struct request *req)
-{
-        /* dequeue, add to list of deferred work
-        * and then schedule workqueue */
-        blkdev_dequeue_request(req);
-        list_add_tail(&req->queuelist, &gdrom_deferred);
-        schedule_work(&work);
-}
-
 static void gdrom_request(struct request_queue *rq)
 {
         struct request *req;
 
-        while ((req = elv_next_request(rq)) != NULL) {
+        while ((req = blk_fetch_request(rq)) != NULL) {
                 if (!blk_fs_request(req)) {
                         printk(KERN_DEBUG "GDROM: Non-fs request ignored\n");
-                        end_request(req, 0);
+                        __blk_end_request_all(req, -EIO);
+                        continue;
                 }
                 if (rq_data_dir(req) != READ) {
                         printk(KERN_NOTICE "GDROM: Read only device -");
                         printk(" write request ignored\n");
-                        end_request(req, 0);
+                        __blk_end_request_all(req, -EIO);
+                        continue;
                 }
-                if (req->nr_sectors)
-                        gdrom_request_handler_dma(req);
-                else
-                        end_request(req, 0);
+
+                /*
+                 * Add to list of deferred work and then schedule
+                 * workqueue.
+                 */
+                list_add_tail(&req->queuelist, &gdrom_deferred);
+                schedule_work(&work);
         }
 }
 
@@ -743,7 +739,7 @@ static void __devinit probe_gdrom_setupdisk(void)
 
 static int __devinit probe_gdrom_setupqueue(void)
 {
-        blk_queue_hardsect_size(gd.gdrom_rq, GDROM_HARD_SECTOR);
+        blk_queue_logical_block_size(gd.gdrom_rq, GDROM_HARD_SECTOR);
         /* using DMA so memory will need to be contiguous */
         blk_queue_max_hw_segments(gd.gdrom_rq, 1);
         /* set a large max size to get most from DMA */