Revision 276cbc7f
| ID | 276cbc7f2fc1bd3810887995dbc9cbb739c975bf |
cow: make reads go at a decent speed
Do not do two reads for each sector; load each sector of the bitmap
and use bitmap operations to process it.
Writes are still dog slow!
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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