Messages in this thread | | | From | "Manfred Spraul" <> | Subject | Re: 64-bit block sizes on 32-bit systems | Date | Mon, 26 Mar 2001 23:53:05 +0200 |
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From: "LA Walsh" <law@sgi.com> > Manfred Spraul wrote: > > > > >4k page size * 2GB = 8TB. > > > > Try it. > > If your drive (array) is larger than 512byte*4G (4TB) linux will eat > > your data. > --- > I have a block device that doesn't use 'sectors'. It > only uses the logical block size (which is currently set for > 1K). Seems I could up that to the max blocksize (4k?) and > get 8TB...No? > > I don't use the generic block make request (have my > own). > Which field do you access? bh->b_blocknr instead of bh->r_sector?
There were plans to split the buffer_head into 2 structures: buffer cache data and the block io data. b_blocknr is buffer cache only, no driver should access them.
http://groups.google.com/groups?q=NeilBrown+io_head&hl=en&lr=&safe=off&r num=1&seld=928643305&ic=1
-- Manfred
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