Merge branch 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block:
  block: implement drain buffers
  __bio_clone: don't calculate hw/phys segment counts
  block: allow queue dma_alignment of zero
  blktrace: Add blktrace ioctls to SCSI generic devices

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 17216b76efdc..aba28f335b88 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -48,6 +48,7 @@ static int sg_version_num = 30534;	/* 2 digits for each component */
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/scatterlist.h>
+#include <linux/blktrace_api.h>
 
 #include "scsi.h"
 #include <scsi/scsi_dbg.h>
@@ -1067,6 +1068,17 @@ sg_ioctl(struct inode *inode, struct file *filp,
         case BLKSECTGET:
                 return put_user(sdp->device->request_queue->max_sectors * 512,
                                 ip);
+        case BLKTRACESETUP:
+                return blk_trace_setup(sdp->device->request_queue,
+                                       sdp->disk->disk_name,
+                                       sdp->device->sdev_gendev.devt,
+                                       (char *)arg);
+        case BLKTRACESTART:
+                return blk_trace_startstop(sdp->device->request_queue, 1);
+        case BLKTRACESTOP:
+                return blk_trace_startstop(sdp->device->request_queue, 0);
+        case BLKTRACETEARDOWN:
+                return blk_trace_remove(sdp->device->request_queue);
         default:
                 if (read_only)
                         return -EPERM;  /* don't know so take safe approach */