cvs commit: src/sys/vm device_pager.c

[Ed Maste]

emaste      2006-01-12 19:56:58 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_4)
    sys/vm               device_pager.c 
  Log:
  Merge device_pager.c:1.69 from HEAD to RELENG_4:
    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
  
  Approved by:    alc, rwatson (mentor)
  
  Revision  Changes    Path
  1.46.2.3  +1 -0      src/sys/vm/device_pager.c