[Qemu-devel] [PATCH 0/3] block: blk_co_pcache

[Vladimir Sementsov-Ogievskiy]

Hi all!

Here is small new io API: blk_co_pcache, which does copy-on-read without
extra buffer for read data. This means that only parts that needs COR
will be actually read and only corresponding buffers allocated, no more.

This allows to improve a bit block-stream and NBD_CMD_CACHE

Vladimir Sementsov-Ogievskiy (3):
  block: implement blk_co_pcache
  block/stream: use blk_co_pcache
  nbd: improve CMD_CACHE: use blk_co_pcache

 include/block/block.h          |  8 ++++++-
 include/sysemu/block-backend.h |  7 ++++++
 block/io.c                     | 18 +++++++++-----
 block/stream.c                 | 19 +++++----------
 nbd/server.c                   | 43 +++++++++++++++++++++++++++-------
 5 files changed, 67 insertions(+), 28 deletions(-)

-- 
2.18.0