K 10
svn:author
V 3
alc
K 8
svn:date
V 27
2007-03-31T22:13:26.000000Z
K 7
svn:log
V 1094
MFC revision 1.559
  Introduce the function pmap_enter_object().

MFC revision 1.562 (in part)
  Change pmap_enter_quick_locked() to fail rather than wait if it is
  unable to allocate a page table page.  This prevents a race between
  pmap_enter_object() and the page daemon.  Specifically, an inactive
  page that is a successor to the page that was given to
  pmap_enter_quick_locked() might become a cache page while
  pmap_enter_quick_locked() waits and later pmap_enter_object() maps
  the cache page violating the invariant that cache pages are never
  mapped.  Similarly, change
  pmap_enter_quick_locked() to call pmap_try_insert_pv_entry() rather
  than pmap_insert_entry().  Generally speaking,
  pmap_enter_quick_locked() is used to create speculative mappings.  So,
  it should not try hard to allocate memory if free memory is scarce.

  Add an assertion that the object containing m_start is locked in
  pmap_enter_object().  Remove a similar assertion from
  pmap_enter_quick_locked() because that function no longer accesses the
  containing object.

  Remove a stale comment.

END