git: kernel - Do a better job locking CAM ref counts

[Matthew Dillon]

commit b3fef7a1c7af0e46de2e155f1c8e644545bfa7cf
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Tue Dec 27 17:30:23 2016 -0800

    kernel - Do a better job locking CAM ref counts
    
    * Fix some ref-count races inside CAM which can be triggered particularly
      by asynchronous AHCI probing.

Summary of changes:
 sys/bus/cam/cam_xpt.c | 161 ++++++++++++++++++++++++++++++++++----------------
 1 file changed, 110 insertions(+), 51 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b3fef7a1c7af0e46de2e155f1c8e644545bfa7cf


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