Re: [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages()

[Nathan Scott <nathans@sgi.com>]

On Mon, Mar 06, 2006 at 03:33:21PM +0530, Suparna Bhattacharya wrote:
> On Fri, Feb 24, 2006 at 09:19:08AM -0800, Badari Pulavarty wrote:
> > 
> > I am thinking of having a "fast path" which doesn't deal with any
> > of those and "slow" path to deal with all that non-sense.
> > ...
> > slow_path is going to be slow & ugly. How important is to handle
> > 1k, 2k filesystems efficiently ? Should I try ?
> 
> With 64K page size that could include 4K, 8K, 16K, 32K block size filesystems
> as well, not sure how likely that would be ?

A number of architectures have a pagesize greater than 4K.  Most
(OK, sample size of 2) mkfs programs default to using 4K blocksizes.
So, any/all platforms not having a 4K pagesize will be disadvantaged.
Search on the definition of PAGE_SHIFT in asm-*/page.h and for all
platforms where its not defined to 12, this will hurt.

cheers.

-- 
Nathan
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