cvs commit: src/sys/vm vm_fault.c

[Alan Cox]

alc         2004-11-28 00:36:57 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/vm               vm_fault.c 
  Log:
  MFC revision 1.198
   Remove unnecessary check for curthread == NULL.
  
  MFC revision 1.197
   System maps are prohibited from mapping vnode-backed objects.  Take
   advantage of this restriction to avoid acquiring and releasing Giant when
   wiring pages within a system map.
  
  MFC revisions 1.193 and 1.194
   Further reduce the use of Giant by vm_fault(): Giant is held only when
   manipulating a vnode, e.g., calling vput().  This reduces contention for
   Giant during many copy-on-write faults, resulting in some additional
   speedup on SMPs.
  
  Revision   Changes    Path
  1.192.2.1  +11 -7     src/sys/vm/vm_fault.c