MFC r260567

  Correctly update the count of stuck pages, "addl_page_shortage", in
  vm_pageout_scan().  There were missing increments in two less common
  cases.

  Don't conflate the count of stuck pages and the pageout deficit provided
  by vm_page_alloc{,_contig}().

  Handle held pages consistently in the inactive queue scan.  In the more
  common case, we did not move the page to the tail of the queue.  Whereas,
  in the less common case, we did.  There's no particular reason to move
  the page in the less common case, so remove it.

  Perform the calculation of the page shortage for the active queue scan a
  little earlier, before the active queue lock is acquired.  The correctness
  of this calculation doesn't depend on the active queue lock being held.

  Eliminate a redundant variable, "pcount".  Use the more descriptive
  variable, "maxscan", in its place.

  Apply a few nearby style fixes, e.g., eliminate stray whitespace and
  excess parentheses.

0 files changed, 0 insertions, 0 deletions