git: dsched_fq - Refactor and clean; handle flushes

[Alex Hornung <alexh@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 3ee00e04e58b9c411500d32ca897e49bfb913596
Author: Alex Hornung <ahornung@gmail.com>
Date:   Thu Apr 1 01:09:59 2010 +0000

    dsched_fq - Refactor and clean; handle flushes
    
    * Factor out an fq_drain which will either cancel or dispatch all the
      bios we have currently in all our fqp queues.
    
    * Clean out old comments and code.
    
    * Deal with flushes by not queuing them but rather letting dsched handle
      them. By returning EINVAL, dsched_queue will dispatch the flush
      itself.

Summary of changes:
 sys/dsched/fq/dsched_fq.h         |   10 ++----
 sys/dsched/fq/dsched_fq_core.c    |   38 ++------------------
 sys/dsched/fq/dsched_fq_diskops.c |   70 +++++++++++++++++++++++-------------
 sys/dsched/fq/dsched_fq_procops.c |    2 +-
 4 files changed, 53 insertions(+), 67 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/3ee00e04e58b9c411500d32ca897e49bfb913596


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