From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd@arndb.de>
Subject: Re: Proposal to improve filesystem/block snapshot interaction
Date: Tue, 30 Oct 2007 13:38:55 +0100
Message-ID: <200710301338.56592.arnd@arndb.de>
References: <20070927063113.GD2989@sgi.com> <200710301115.30376.arnd@arndb.de> <7fe698080710300349x5df5d9b9kb3bd69a3077940bc@mail.gmail.com>
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Cc: "Greg Banks" <gnb@sgi.com>,
	"Linux Filesystem Mailing List" <linux-fsdevel@vger.kernel.org>,
	"David Chinner" <dgc@melbourne.sgi.com>,
	"Donald Douwsma" <donaldd@melbourne.sgi.com>,
	"Christoph Hellwig" <hch@infradead.org>,
	"Roger Strassburg" <rls@sgi.com>, "Mark Goodwin" <markgw@sgi.com>,
	"Brett Jon Grandbois" <brettg@melbourne.sgi.com>
To: "Dongjun Shin" <djshin90@gmail.com>
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On Tuesday 30 October 2007, Dongjun Shin wrote:
> Anyway, BIO_HINT_RELEASE could destroy the content of the blocks
> after being passed to the device. I think that other bio should not be
> reordered accross that hint (just like barrier).

Not sure. Why shouldn't you be able to reorder the hints provided that
they don't overlap with read/write bios for the same block?

	Arnd <><