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qcow2: Calculate refcount block entry count
authorMax Reitz <[email protected]>
Wed, 22 Oct 2014 12:09:28 +0000 (14:09 +0200)
committerKevin Wolf <[email protected]>
Thu, 23 Oct 2014 13:34:01 +0000 (15:34 +0200)
commit1d13d654666a7fd6d6a85a0ce9285dbf0d0444c2
treeafc4fe0f17cb9f8c441ebebdc9597cdb7c6dc1bbtree | snapshot
parent9ebd84480583bb6d9a7666c079d99ff3266c423dcommit | diff
qcow2: Calculate refcount block entry count

The size of a refblock entry is (in theory) variable; calculate
therefore the number of entries per refblock and the according bit shift
(1 << x == entry count) when opening an image.

Signed-off-by: Max Reitz <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>
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