Would anyone please take a look at this ? Thanks Jianchao On 11/2/18 3:08 PM, Jianchao Wang wrote: > Hi Jens > > These patch set refactors the code of issueing request driectly and > fix some defects. > > The 1st patch make __blk_mq_issue_directly be able to accept NULL cookie > pointer. > > The 2nd patch refactors the code of issue request directly. > It merges the blk_mq_try_issue_directly and __blk_mq_try_issue_directly > and make it handle the return value of .queue_rq itself. > > The 3rd patch let the requests be inserted into hctx->dispatch when > the queue is stopped or quiesced if bypass is true. > > The 4th patch make blk_mq_sched_insert_requests issue requests directly > with 'bypass' false, then it needn't to handle the non-issued requests > any more. > > The 5th patch ensures the hctx to be ran on its mapped cpu in issue directly > path. > > V4: > - split the original patch 1 into two patches, 1st and 2nd patch currently > - rename the mq_decision to mq_issue_decision > - comment changes > > V3: > - Correct the code about the case bypass_insert is true and io scheduler > attached. The request still need to be issued in case above. (1/4) > - Refactor the code to make code clearer. blk_mq_make_request is introduced > to decide insert, end or just return based on the return value of .queue_rq > and bypass_insert (1/4) > - Add the 2nd patch. It introduce a new decision result which indicates to > insert request with blk_mq_request_bypass_insert. > - Modify the code to adapt the new patch 1. > > V2: > - Add 1st and 2nd patch > > Jianchao Wang (5) > blk-mq: make __blk_mq_issue_directly be able to accept > blk-mq: refactor the code of issue request directly > blk-mq: fix issue directly case when q is stopped or > blk-mq: issue directly with bypass 'false' in > blk-mq: ensure hctx to be ran on mapped cpu when issue > > block/blk-mq-sched.c | 8 ++- > block/blk-mq.c | 149 ++++++++++++++++++++++++++++++--------------------- > 2 files changed, 92 insertions(+), 65 deletions(-) > > Thanks > Jianchao >
