tree 8cb0076737679544da5de89484548c921e2131cc
parent e8037d49835482c9534a9a07bed0d0ea831135ae
author Shaohua Li <shaohua.li@intel.com> 1314194672 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1314194672 +0200

block: change force plug flush call order

Do blk_flush_plug_list() first and then add new request aDo blk_flush_plug_list() first and then add new request aDo blk_flush_plug_list() first and then add new request at the tail. New
request can't be merged to existing requests, but later new requests might
be merged with this new one. If blk_flush_plug_list() is done later, the
merge doesn't happen.
Believe it or not, this fixes a 10% regression running sysbench workload.

Signed-off-by: Shaohua Li <shli@kernel.org>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>