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Date: Thu, 18 Dec 2003 00:39:57 -0800
From: Mike Fedyk <mfedyk@matchmail.com>
To: jshankar <jshankar@CS.ColoState.EDU>
Cc: Hans Reiser <reiser@namesys.com>, linux-fsdevel@vger.kernel.org,
       linux-kernel@vger.kernel.org
Subject: Re: ext3 file system
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On Wed, Dec 17, 2003 at 09:47:59PM -0700, jshankar wrote:
> Hello Hans,
> 
> >Filesystems don't usually wait on the IO to complete before submitting
> >more IO in response to the next write() syscall.  They can do this by
> >batching a whole bunch of operations into one committed transaction.
> >
> 
> Is there a timeout mechanism for batching operations. What if certain 
> operation
> is done after the batch operation is executed. Does it mean that the new 
> operation has to wait.

You don't have to wait unless you run out of available non-dirty memory, or
issue a call to sync to the disks.