linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Badari Pulavarty <pbadari@us.ibm.com>
To: Nathan Scott <nathans@sgi.com>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>, christoph <hch@lst.de>,
	mcao@us.ibm.com, akpm@osdl.org,
	lkml <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	vs@namesys.com, zam@namesys.com
Subject: Re: [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages()
Date: Tue, 07 Mar 2006 01:00:45 -0800	[thread overview]
Message-ID: <440D4BBD.20405@us.ibm.com> (raw)
In-Reply-To: 20060307093930.D219568@wobbly.melbourne.sgi.com



Nathan Scott wrote:

>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.
>

I agree,  I haven't made up my mind either on if its really worth doing.

I was hoping that it will help simple cases + it will help filesystems 
which use
page->private for something other than buffer heads.

Thanks,
Badari

>




      reply	other threads:[~2006-03-07  1:01 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-20 21:21 [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Badari Pulavarty
2006-02-20 21:23 ` [PATCH 1/3] pass b_size to ->get_block() Badari Pulavarty
2006-02-20 21:23 ` [PATCH 2/3] map multiple blocks for mpage_readpages() Badari Pulavarty
2006-02-23  3:29   ` Suparna Bhattacharya
2006-02-23 22:18     ` Badari Pulavarty
2006-02-20 21:24 ` [PATCH 3/3] remove ->get_blocks() support Badari Pulavarty
2006-02-20 21:59 ` [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Nathan Scott
2006-02-20 23:06   ` Badari Pulavarty
2006-02-20 23:16     ` Nathan Scott
2006-02-21  2:41   ` Jeremy Higdon
2006-02-21 16:03     ` Badari Pulavarty
2006-02-21 21:39       ` Nathan Scott
2006-02-22 15:12 ` christoph
2006-02-22 16:58   ` Badari Pulavarty
2006-02-22 16:59     ` christoph
2006-02-23  1:40       ` Nathan Scott
2006-02-23  1:59         ` Andrew Morton
2006-02-23 16:28           ` [PATCH] change b_size to size_t Badari Pulavarty
2006-02-23 16:32             ` Benjamin LaHaise
2006-02-23 17:20               ` Badari Pulavarty
2006-02-23 17:28               ` Badari Pulavarty
2006-02-23 17:29                 ` Benjamin LaHaise
2006-02-23 18:46                   ` Badari Pulavarty
2006-02-23 17:40                 ` Badari Pulavarty
2006-02-23 16:40             ` Dave Kleikamp
2006-02-22 17:23     ` [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Peter Staubach
2006-02-22 18:37     ` Dave Kleikamp
2006-02-22 19:00       ` Badari Pulavarty
2006-02-24 17:19   ` Badari Pulavarty
2006-03-06 10:03     ` Suparna Bhattacharya
2006-03-06 22:39       ` Nathan Scott
2006-03-07  9:00         ` Badari Pulavarty [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=440D4BBD.20405@us.ibm.com \
    --to=pbadari@us.ibm.com \
    --cc=akpm@osdl.org \
    --cc=hch@lst.de \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mcao@us.ibm.com \
    --cc=nathans@sgi.com \
    --cc=suparna@in.ibm.com \
    --cc=vs@namesys.com \
    --cc=zam@namesys.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).