> > Well, I'm doing it during boot, and this is swap partition; it should
> > not have been accessed previously.
> >
> > > > bdev = bdget(kdev_t_to_nr(dev));
> > > > if (!bdev) {
> > > > printk("No block device for %s\n", __bdevname(dev));
> > > > BUG();
> > > > }
> > > > printk("C");
>
> blkdev_open(bdev, FMODE_READ, O_RDONLY, BDEV_RAW)
blkdev_open is
fs.h:extern int blkdev_open(struct inode *, struct file *);
... I can't see how to use it in this context.
> > > > if (!bh || (!bh->b_data)) {
> > > > return -1;
>
> However, I would really suggest to open the bugger once, do all IO and
> then close it. See how raw.c and friends deal with these problems.
Performance should not matter here.
Pavel
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