Hi,
On Tue, 15 Jan 2008, Geert Uytterhoeven wrote:
The speed doesn't seem to be drastically faster (only twice as fast last I
tested with a simple dd). One reason may be that xhdi.cpp opens the file
Twice as fast is still better...
I did a quick test and without the open/close sequence, it's again almost
twice as fast.
+int nfhd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+{
+ struct nfhd_device *dev = bdev->bd_disk->private_data;
+
+ geo->cylinders = dev->blocks / (64 >> dev->bshift);
+ geo->heads = 4;
+ geo->sectors = 16;
+
+ return 0;
+}
I don't think you need getgeo these days.
AFAICT it's still the only ioctl that makes the partition offset
available, it's only really needed for bootloader, but it doesn't hurt
much either...
+static struct block_device_operations nfhd_ops = {
+ .owner = THIS_MODULE,
+ .ioctl = blkdev_ioctl,
+ .getgeo = nfhd_getgeo,
+};
Same for ioctl?
Interesting, that explains the stack overflow. :)
(blkdev_ioctl is the main entry function)
bye, Roman
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