Merge pull request #5293 from majianpeng/oprequest-markevent

osd: Oprequest markevent

Reviewed-by: Huang Jun <hjwsm1989@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/osd/OSD.cc
Simple merge

diff --cc src/osd/PG.cc
Simple merge

diff --cc src/osd/ReplicatedPG.cc
Simple merge