cvs commit: src/sys/dev/cxgb/ulp/tom cxgb_vm.c

[Kip Macy]

kmacy       2008-09-29 22:13:29 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/cxgb/ulp/tom cxgb_vm.c 
  Log:
  SVN rev 183478 on 2008-09-29 22:13:29Z by kmacy
  
  vm_fault_hold_user_pages will not return if an address in the range passed in is mapped RO
  but an RW mapping exists for the underlying page. This change fixes the bug by using the
  page / NULL returned from pmap_extract_and_hold to determine whether or not vm_fault needs
  to be called.
  
  The bug was pointed out by alc.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.3       +8 -14     src/sys/dev/cxgb/ulp/tom/cxgb_vm.c