git: kernel -- vm_object locking: Interlock vm_object work in vm_fault.c and vm_map.c with per-object token. Handle NULL objects for _hold and _drop.

[Venkatesh Srinivas]

commit b4460ab356b9d7f1bd11c8badbf2a6dc97a7776f
Author: Venkatesh Srinivas <me at endeavour.zapto.org>
Date:   Tue Jun 7 13:13:34 2011 -0700

    kernel -- vm_object locking: Interlock vm_object work in vm_fault.c
    and vm_map.c with per-object token. Handle NULL objects for _hold and _drop.

Summary of changes:
 sys/vm/vm_fault.c    |   16 ++++++++--------
 sys/vm/vm_map.c      |    3 +++
 sys/vm/vm_object.c   |   10 ++++++++++
 sys/vm/vm_object.h   |    4 ++++
 sys/vm/vnode_pager.c |    2 +-
 5 files changed, 26 insertions(+), 9 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b4460ab356b9d7f1bd11c8badbf2a6dc97a7776f


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