v3:
  - Refix cow_update_bitmap and squash patches 1 & 3 together to ensuring that 
we only flush if
    necessary, patch 1 on its own would change this causing a regression.
v2:
  - Fix bit position calculations in cow_update_bitmap
  - Add necessary check in cow_set_bits

Following on from Paolo's commits 26ae980 and 276cbc7, this patchset
implements some changes he recommended earlier which I didn't previously have
time to do while on GSoC.

Charlie Shepherd (2):
  COW: Speed up writes
  COW: Extend checking allocated bits to beyond one sector

 block/cow.c | 123 ++++++++++++++++++++++++++++++++++++------------------------
 1 file changed, 75 insertions(+), 48 deletions(-)

-- 
1.8.4.rc3


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