linux-kernel - Re: Tux3 Report: Faster than tmpfs, what?

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Message-Id: <97A34425-E663-4322-BEFF-6426C54572F9@dilger.ca>
Date:	Wed, 15 May 2013 11:10:52 -0600
From:	Andreas Dilger <adilger@...ger.ca>
To:	Daniel Phillips <daniel.raymond.phillips@...il.com>
Cc:	Theodore Ts'o <tytso@....edu>, Dave Chinner <david@...morbit.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tux3@...3.org" <tux3@...3.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: Tux3 Report: Faster than tmpfs, what?

On 2013-05-14, at 0:25, Daniel Phillips <daniel.raymond.phillips@...il.com> wrote:
> Interesting, Andreas. We don't do anything as heavyweight as
> allocating an inode in this path, just mark the inode dirty (which
> puts it on a list) and set a bit in the inode flags.

The new inode allocation is only needed for the truncate-to-zero case. If the inode is being deleted it is used directly. 

Sorry for confusion, it has been a long time since I looked at that code. 

Cheers, Andreas--
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