On Thu, 4 Nov 1999 17:08:46 +0000 (GMT), Tigran Aivazian
<tigran@sco.COM> said:
> bh = bread(dev, A, 512);
> if (!bh)
> goto out;
> new = getblk(dev, B, 512);
> memcpy(new->b_data, bh->b_data, bh->b_size);
> mark_buffer_dirty(new, 1);
> out:
> brelse(bh);
> brelse(new);
After the
new = getblk()
you need to do a
if (!buffer_uptodate(new))
wait_on_buffer(new);
to address a race Andrea spotted recently in several other places in the
kernel.
--Stephen
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