On Fri, 8 Jul 2005 07:16 am, Nigel Cunningham wrote:
Hi,
> > > +struct io_info {
> > > + struct bio * sys_struct;
> > > + long block[PAGE_SIZE/512];
> >
> > Aah, but for this you should use block_size(io_info->dev) instead. No
> > need to mess with sector sizes. Why is this long by the way?
> > PAGE_SIZE/512 is block size in bytes.
>
> No... it's the maximum number of blocks per page. Depending upon how
> the user has set the blocksize when they created the filesystem (in the
> case of filesystems), the number of blocks we use per page might be 1,
> 2, 4 or 8.
>
MAX_BUF_PER_PAGE
> It's long because a sector number is stored in it.
>
sector_t?
Nick
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