Messages in this thread |  | | Date | Tue, 13 Nov 2001 10:02:30 +0100 | From | Jens Axboe <> | Subject | Re: [Evms-devel] Re: Re: Hardsector size support in 2.4 and 2.5 |
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On Mon, Nov 12 2001, Christoph Hellwig wrote: > On Mon, Nov 12, 2001 at 02:05:19PM -0600, Mark Peloquin wrote: > > So any block device, can always expect to receive buffer heads > > whose b_rsector value represents the offset from the beginning > > of that device in 512 byte multiples? And this will continue > > to hold true in 2.5 as well? > > There is a good chance that no 2.5 block driver will ever see a buffer_head, > take a look at http://www.kernel.org/pub/linux/kernel/people/axboe/v2.5/ for > details.
To expand on the specific point -- in 2.5, what will change is that b_rsector (or equiv field, bi_sector in bio) will be offset from the beginning of the disk, not the beginning of the partition. This moves toe partion remaps out of the driver itself.
-- Jens Axboe
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