I apologize for the hasty of posting. I post the patch again.
I confirmed that the contents of the log is same with the
contents of blktrace. I hope this helps somebody-newbie-like me.
--- linux-2.6.20/block/ll_rw_blk.c.sx 2007-02-05 03:44:54.000000000 +0900
+++ linux-2.6.20/block/ll_rw_blk.c 2007-02-12 22:35:34.000000000 +0900
@@ -3150,6 +3150,8 @@
old_sector = -1;
old_dev = 0;
do {
+ struct bio *pb;
+ int r;
char b[BDEVNAME_SIZE];
q = bdev_get_queue(bio->bi_bdev);
@@ -3209,6 +3211,14 @@
}
}
+ pb = bio;
+ printk(KERN_INFO "device:[%s:%d] sector:[%8ld/%8ld] [%5s] %3d\n",
+ pb->bi_bdev->bd_disk->disk_name,
+ pb->bi_bdev->bd_disk->major,
+ pb->bi_sector, pb->bi_bdev->bd_disk->capacity,
+ (pb->bi_rw << (sizeof(unsigned long) - 1)) ? "write" : "read",
+ r);
+
ret = q->make_request_fn(q, bio);
} while (ret);
}
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