From d74f81f8adc504a23be3babf347b9f69e9389924 Mon Sep 17 00:00:00 2001
From: Milan Broz <mbroz@redhat.com>
Date: Fri, 8 Feb 2008 02:11:27 +0000
Subject: [PATCH] dm snapshot: combine consecutive exceptions in memory

Provided sector_t is 64 bits, reduce the in-memory footprint of the
snapshot exception table by the simple method of using unused bits of
the chunk number to combine consecutive entries.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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