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From: Christoph Hellwig <hch@lst.de>
Subject: reduce lookups in the COW extent tree
Date: Tue, 10 Jul 2018 08:05:22 +0200
Message-Id: <20180710060528.4071-1-hch@lst.de>
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To: linux-xfs@vger.kernel.org

This series (on top of the iomap series) reduce the number of lookups we
do in the COW tree by adding a sequence number that counts modifications
to the extent tree.