cvs commit: src/sys/vm vm_map.c vm_map.h vm_mmap.c

[Konstantin Belousov]

kib         2007-08-20 12:05:45 UTC

  FreeBSD src repository

  Modified files:
    sys/vm               vm_map.c vm_map.h vm_mmap.c 
  Log:
  Do not drop vm_map lock between doing vm_map_remove() and vm_map_insert().
  For this, introduce vm_map_fixed() that does that for MAP_FIXED case.
  
  Dropping the lock allowed for parallel thread to occupy the freed space.
  
  Reported by:    Tijl Coosemans <tijl ulyssis org>
  Reviewed by:    alc
  Approved by:    re (kensmith)
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.387     +35 -16    src/sys/vm/vm_map.c
  1.120     +1 -0      src/sys/vm/vm_map.h
  1.213     +4 -2      src/sys/vm/vm_mmap.c