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, 17 insertions, 31 deletions

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index d22cc3856937..cf7877fb8a7d 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -514,7 +514,7 @@ static int floppy_read_sectors(struct floppy_state *fs,
                         ret = swim_read_sector(fs, side, track, sector,
                                                 buffer);
                         if (try-- == 0)
-                                return -1;
+                                return -EIO;
                 } while (ret != 512);
 
                 buffer += ret;
@@ -528,45 +528,31 @@ static void redo_fd_request(struct request_queue *q)
         struct request *req;
         struct floppy_state *fs;
 
-        while ((req = elv_next_request(q))) {
+        req = blk_fetch_request(q);
+        while (req) {
+                int err = -EIO;
 
                 fs = req->rq_disk->private_data;
-                if (req->sector < 0 || req->sector >= fs->total_secs) {
-                        end_request(req, 0);
-                        continue;
-                }
-                if (req->current_nr_sectors == 0) {
-                        end_request(req, 1);
-                        continue;
-                }
-                if (!fs->disk_in) {
-                        end_request(req, 0);
-                        continue;
-                }
-                if (rq_data_dir(req) == WRITE) {
-                        if (fs->write_protected) {
-                                end_request(req, 0);
-                                continue;
-                        }
-                }
+                if (blk_rq_pos(req) >= fs->total_secs)
+                        goto done;
+                if (!fs->disk_in)
+                        goto done;
+                if (rq_data_dir(req) == WRITE && fs->write_protected)
+                        goto done;
+
                 switch (rq_data_dir(req)) {
                 case WRITE:
                         /* NOT IMPLEMENTED */
-                        end_request(req, 0);
                         break;
                 case READ:
-                        if (floppy_read_sectors(fs, req->sector,
-                                                req->current_nr_sectors,
-                                                req->buffer)) {
-                                end_request(req, 0);
-                                continue;
-                        }
-                        req->nr_sectors -= req->current_nr_sectors;
-                        req->sector += req->current_nr_sectors;
-                        req->buffer += req->current_nr_sectors * 512;
-                        end_request(req, 1);
+                        err = floppy_read_sectors(fs, blk_rq_pos(req),
+                                                  blk_rq_cur_sectors(req),
+                                                  req->buffer);
                         break;
                 }
+        done:
+                if (!__blk_end_request_cur(req, err))
+                        req = blk_fetch_request(q);
         }
 }