tree db0eef6fb2a061b09f7804239a8260e6b45b2df2
parent 6ea44308b0e8156d352f07b97b2b05eaed89aa6d
author Jan Kiszka <jan.kiszka@siemens.com> 1259601680 +0100
committer Anthony Liguori <aliguori@us.ibm.com> 1259858932 -0600

block migration: Cleanup dirty tracking code

This switches the dirty bitmap to a true bitmap, reducing its footprint
(specifically in caches). It moreover fixes off-by-one bugs in
set_dirty_bitmap (nb_sectors+1 were marked) and bdrv_get_dirty (limit
check allowed one sector behind end of drive). And is drops redundant
dirty_tracking field from BlockDriverState.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>