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authorMax Reitz <mreitz@redhat.com>2017-05-04 01:11:19 +0200
committerKevin Wolf <kwolf@redhat.com>2017-05-11 12:08:24 +0200
commit293073a56c6c921c9902da17711914a0042f29ba (patch)
treefff27922e591cee8a4a5b509c95baa48e5bccc30 /block/win32-aio.c
parent564a6b693828ac38f3f562eed9e8b1dc62f45253 (diff)
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qcow2: Discard preallocated zero clusters
In discard_single_l2(), we completely discard normal clusters instead of simply turning them into preallocated zero clusters. That means we should probably do the same with such preallocated zero clusters: Discard them instead of keeping them allocated. Reported-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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