lkml.org 
[lkml]   [2006]   [Mar]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages()
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-06 23:43    [W:0.104 / U:0.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site