git: DragonFly_RELEASE_5_0 kernel - Refactor vm_fault and vm_map a bit (partial MFC)

[Matthew Dillon]

commit a974df6046ae008361d5ffa07fc97d60397278dd
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Wed Nov 1 19:23:50 2017 -0700

    kernel - Refactor vm_fault and vm_map a bit (partial MFC)
    
    * Fix an incorrect assertion in vm_map_split().
    
    * Make sure OBJ_ONEMAPPING is cleared for nobject in vm_map_split().
    
    * Fix a bug in the virtual copy test.  Multiple elements were
      not being retested after reacquiring the map lock.
    
    * NOTE: moving the chain acquisition out of vm_map_split() not MFCd.

Summary of changes:
 sys/vm/vm_fault.c | 118 +++++++++++++++++++++++++++++++++++-------------------
 sys/vm/vm_map.c   |   9 ++++-
 2 files changed, 85 insertions(+), 42 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/a974df6046ae008361d5ffa07fc97d60397278dd


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