Re: blkdev in pagecache

[Andrea Arcangeli]

On Wed, May 09, 2001 at 05:03:06PM +0200, Reto Baettig wrote:
> Jeff Garzik schrieb:
> > 
> > Martin Dalecki wrote:
> > > > - I force the virtual blocksize for all the blkdev I/O
> > > >   (buffered and direct) to work with a 4096 bytes granularity instead of
> > >
> > > You mean PAGE_SIZE :-).
> 
> Or maybe 8192 bytes on alphas ?!? ;-)

Again, see my argument with Jens, if we make it 8k we risk triggering
lowlevel driver assumption about b_size being <= 4k. At least on my
alpha the fs has a 4k blocksize and I think I never tested myself using
a b_size of 8k yet and so I didn't wanted to put too many unknown
variables into the first equation ;).

Andrea