cvs commit: src/sys/vm device_pager.c

[Alan Cox]

alc         2003/10/05 15:23:44 PDT

  FreeBSD src repository

  Modified files:
    sys/vm               device_pager.c 
  Log:
  The addition of a locking assertion to vm_page_zero_invalid() has revealed
  a long-time bug: vm_pager_get_pages() assumes that m[reqpage] contains a
  valid page upon return from pgo_getpages().  In the case of the device
  pager this page has been freed and replaced by a fake page.  The fake page
  is properly inserted into the vm object but m[reqpage] is left pointing
  to a freed page.  For now, update m[reqpage] to point to the fake page.
  
  Submitted by:   tegge
  
  Revision  Changes    Path
  1.69      +1 -0      src/sys/vm/device_pager.c