[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23

Signed-off-by: Jens Axboe <axboe@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 35fdb7dc6512..9cfa2e1ecb24 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -5,6 +5,7 @@
 #include <linux/backing-dev.h>
 #include <linux/buffer_head.h>
 #include <linux/smp_lock.h>
+#include <linux/blktrace_api.h>
 #include <asm/uaccess.h>
 
 static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user *arg)
@@ -189,6 +190,11 @@ static int blkdev_locked_ioctl(struct file *file, struct block_device *bdev,
                 return put_ulong(arg, bdev->bd_inode->i_size >> 9);
         case BLKGETSIZE64:
                 return put_u64(arg, bdev->bd_inode->i_size);
+        case BLKTRACESTART:
+        case BLKTRACESTOP:
+        case BLKTRACESETUP:
+        case BLKTRACETEARDOWN:
+                return blk_trace_ioctl(bdev, cmd, (char __user *) arg);
         }
         return -ENOIOCTLCMD;
 }