[Qemu-devel] [PATCH 0/3] COW: Speed up writes

[Charlie Shepherd]

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.

Patch 2 was written initially I was intending to use cow_co_is_allocated in
Patch 3 and needed it to consider all sectors but in the end cow_find_streak
was sufficient, so it may not strictly be necessary.

Charlie Shepherd (3):
  COW: Speed up writes
  COW: Extend checking allocated bits to beyond one sector
  COW: Skip setting already set bits

 block/cow.c | 122 ++++++++++++++++++++++++++++++++++++------------------------
 1 file changed, 74 insertions(+), 48 deletions(-)

-- 
1.8.4.rc3