0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch 1013 B

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  1. From f5f66abf7c99c7786991f7bdd1b91195e8b48913 Mon Sep 17 00:00:00 2001
  2. From: popcornmix <popcornmix@gmail.com>
  3. Date: Wed, 18 Jun 2014 13:42:01 +0100
  4. Subject: [PATCH 003/381] vmstat: Workaround for issue where dirty page count
  5. goes negative
  6. See:
  7. https://github.com/raspberrypi/linux/issues/617
  8. http://www.spinics.net/lists/linux-mm/msg72236.html
  9. ---
  10. include/linux/vmstat.h | 4 ++++
  11. 1 file changed, 4 insertions(+)
  12. --- a/include/linux/vmstat.h
  13. +++ b/include/linux/vmstat.h
  14. @@ -219,7 +219,11 @@ static inline void __inc_zone_state(stru
  15. static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
  16. {
  17. atomic_long_dec(&zone->vm_stat[item]);
  18. + if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&zone->vm_stat[item]) < 0))
  19. + atomic_long_set(&zone->vm_stat[item], 0);
  20. atomic_long_dec(&vm_stat[item]);
  21. + if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&vm_stat[item]) < 0))
  22. + atomic_long_set(&vm_stat[item], 0);
  23. }
  24. static inline void __inc_zone_page_state(struct page *page,