[PATCH 0/1] patches to improve cluster raid1 performance [V3]

[dongmao zhang <dmzhang@suse.com>]

use DM_INTEGRATED_FLUSH to indicate the new option of flush request.
when using DM_INTEGRATED_FLUSH, the payload of flush request is the 
same as mark region request.

'X' means we have this kind of request, while '0' means none.

mark request :     X               X               0

clear request:     X               0               X

flush method:    payload_flush   payload_flush   delayed flush

dongmao zhang (1):
  improve the performance of dm-log-userspace

 drivers/md/dm-log-userspace-base.c    |  133 +++++++++++++++++++++++++++++----
 include/uapi/linux/dm-log-userspace.h |    6 +-
 2 files changed, 121 insertions(+), 18 deletions(-)

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1.7.3.4