Messages in this thread | | | Date | Thu, 9 May 2002 23:36:24 +0200 | From | Pavel Machek <> | Subject | Re: Reading page from given block device |
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Hi!
> > 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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