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Date: Sun, 7 Nov 2010 12:45:39 +0100
From: Jens Axboe <jaxboe@fusionio.com>
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To: Mike Snitzer <snitzer@redhat.com>
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Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	Neil Brown <neilb@suse.de>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"drbd-dev@lists.linbit.com" <drbd-dev@lists.linbit.com>
Subject: Re: [Drbd-dev] [PATCH] block: read i_size with i_size_read()
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On 2010-11-05 20:27, Mike Snitzer wrote:
> Convert direct reads of an inode's i_size to using i_size_read().
> 
> i_size_{read,write} use a seqcount to protect reads from accessing
> incomple writes.  Concurrent i_size_write()s require mutual exclussion
> to protect the seqcount that is used by i_size_{read,write}.  But
> i_size_read() callers do not need to use additional locking.

Thanks Mike, I'll queue this up.

-- 
Jens Axboe