From: Suparna Bhattacharya <suparna@in.ibm.com>
To: Mingming Cao <cmm@us.ibm.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>,
Andrew Morton <akpm@osdl.org>,
"Stephen C. Tweedie" <sct@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
ext2-devel <ext2-devel@lists.sourceforge.net>,
linux-fsdevel@vger.kernel.org
Subject: Re: [Ext2-devel] [RFC] Adding multiple block allocation
Date: Sat, 30 Apr 2005 21:40:43 +0530 [thread overview]
Message-ID: <20050430161043.GB3941@in.ibm.com> (raw)
In-Reply-To: <1114816980.10473.90.camel@localhost.localdomain>
On Fri, Apr 29, 2005 at 04:22:59PM -0700, Mingming Cao wrote:
> On Fri, 2005-04-29 at 11:45 -0700, Badari Pulavarty wrote:
> > I touch tested your patch earlier and seems to work fine. Lets integrate
> > Mingming's getblocks() patches with this and see if we get any benifit
> > from the whole effort.
> >
>
> I tried Suparna's mpage_writepages_getblocks patch with my
> ext3_get_blocks patch, seems to work fine, except that still only one
> block is allocated at a time. I got a little confused....
>
> I did not see any delayed allocation code in your patch, I assume you
> have to update ext3_prepare_write to not call ext3_get_block, so that
> block allocation will be defered at ext3_writepages time. So without the
> delayed allocation part, the get_blocks in mpage_writepages is doing
> multiple blocks look up only, right?
That's right - so you could try it with mmapped writes (which don't
go through a prepare write) or with Badari's patch to not call
ext3_get_block in prepare write.
Regards
Suparna
>
>
> Mingming
>
>
>
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--
Suparna Bhattacharya (suparna@in.ibm.com)
Linux Technology Center
IBM Software Lab, India
next prev parent reply other threads:[~2005-04-30 16:02 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-05 3:51 ext3 allocate-with-reservation latencies Lee Revell
2005-04-05 4:13 ` Ingo Molnar
2005-04-05 6:10 ` Mingming Cao
2005-04-05 16:38 ` Lee Revell
2005-04-06 5:35 ` Mingming Cao
2005-04-06 9:51 ` Stephen C. Tweedie
2005-04-06 16:53 ` Mingming Cao
2005-04-06 18:22 ` Stephen C. Tweedie
2005-04-06 19:03 ` Mingming Cao
2005-04-07 8:14 ` Ingo Molnar
2005-04-07 13:08 ` Stephen C. Tweedie
2005-04-07 19:16 ` Mingming Cao
2005-04-07 23:37 ` Mingming Cao
2005-04-08 14:40 ` Stephen C. Tweedie
2005-04-08 16:06 ` Arjan van de Ven
2005-04-08 18:10 ` Mingming Cao
2005-04-08 18:12 ` Lee Revell
2005-04-11 11:48 ` Stephen C. Tweedie
2005-04-11 18:38 ` Mingming Cao
2005-04-11 19:12 ` Lee Revell
2005-04-11 19:22 ` Lee Revell
2005-04-11 19:57 ` Stephen C. Tweedie
2005-04-12 6:41 ` Mingming Cao
2005-04-12 11:18 ` Stephen C. Tweedie
2005-04-12 23:27 ` Mingming Cao
2005-04-13 10:29 ` Stephen C. Tweedie
[not found] ` <1113597161.3899.80.camel@localhost.localdomain>
2005-04-18 18:00 ` Stephen C. Tweedie
2005-04-18 21:56 ` [Ext2-devel] " Mingming Cao
2005-04-22 22:10 ` [RFC][PATCH] Reduce ext3 allocate-with-reservation lock latencies Mingming Cao
2005-04-28 3:45 ` Lee Revell
2005-04-28 7:37 ` Mingming Cao
2005-04-28 16:12 ` Lee Revell
2005-04-28 18:34 ` Mingming Cao
2005-04-29 6:18 ` Mingming Cao
2005-04-28 19:14 ` [RFC] Adding multiple block allocation to current ext3 Mingming Cao
2005-04-29 13:52 ` [Ext2-devel] [RFC] Adding multiple block allocation Suparna Bhattacharya
2005-04-29 17:10 ` Mingming Cao
2005-04-29 19:42 ` Mingming Cao
2005-04-29 20:57 ` Andrew Morton
2005-04-29 21:12 ` Mingming Cao
2005-04-29 21:34 ` Andrew Morton
2005-04-30 16:00 ` Suparna Bhattacharya
2005-04-29 18:45 ` Badari Pulavarty
2005-04-29 23:22 ` Mingming Cao
2005-04-30 16:10 ` Suparna Bhattacharya [this message]
2005-04-30 17:11 ` Suparna Bhattacharya
2005-04-30 18:07 ` Mingming Cao
2005-05-02 4:46 ` Suparna Bhattacharya
2005-04-30 16:52 ` Suparna Bhattacharya
2005-04-30 0:33 ` Mingming Cao
2005-04-30 0:44 ` Mingming Cao
2005-04-30 17:03 ` Suparna Bhattacharya
2006-01-10 23:26 ` [PATCH 0/5] multiple block allocation to current ext3 Mingming Cao
2006-01-11 5:25 ` Andrew Morton
2006-01-11 19:17 ` Mingming Cao
2006-01-11 19:43 ` Andrew Morton
2006-01-11 21:31 ` Mingming Cao
2006-01-14 1:12 ` Fall back io scheduler for 2.6.15? Mingming Cao
2006-01-14 1:49 ` Andrew Morton
2006-01-14 5:22 ` Dave Jones
2006-01-16 8:43 ` Jens Axboe
2006-01-16 19:45 ` [PATCH] Fall back io scheduler ( Re: [Ext2-devel] Re: Fall back io scheduler for 2.6.15?) Mingming Cao
2006-01-16 19:49 ` Jens Axboe
2006-01-16 19:57 ` Mingming Cao
2006-01-19 19:37 ` Fall back io scheduler for 2.6.15? Nate Diller
2006-01-20 8:10 ` Jens Axboe
2006-01-16 19:38 ` [Ext2-devel] " Mingming Cao
2005-04-29 6:28 ` [PATCH] Reduce ext3 allocate-with-reservation lock latencies Mingming Cao
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