linux-kernel - Re: [PATCH] kernfs: use stack-buf for small writes.

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Message-ID: <20140923041817.GA11740@mtj.dyndns.org>
Date:	Tue, 23 Sep 2014 00:18:17 -0400
From:	Tejun Heo <tj@...nel.org>
To:	NeilBrown <neilb@...e.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kernfs: use stack-buf for small writes.

On Tue, Sep 23, 2014 at 02:06:33PM +1000, NeilBrown wrote:
...
> Note that reads from a sysfs file are already safe due to the use for
> seqfile.  The first read will allocate a buffer (m->buf) which will
> be used for all subsequent reads.

Hmmm?  How is seqfile safe?  Where would the seq op write to?

Thanks.

-- 
tejun
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