diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 1b4e4a597caa..a3d669f8e25e 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1628,6 +1628,13 @@ static void get_scan_count(struct zone *zone, struct scan_control *sc, } /* + * With swappiness at 100, anonymous and file have the same priority. + * This scanning priority is essentially the inverse of IO cost. + */ + anon_prio = sc->swappiness; + file_prio = 200 - sc->swappiness; + + /* * OK, so we have swap space and a fair amount of page cache * pages. We use the recently rotated / recently scanned * ratios to determine how valuable each cache is. @@ -1638,28 +1645,18 @@ static void get_scan_count(struct zone *zone, struct scan_control *sc, * * anon in [0], file in [1] */ + spin_lock_irq(&zone->lru_lock); if (unlikely(reclaim_stat->recent_scanned[0] > anon / 4)) { - spin_lock_irq(&zone->lru_lock); reclaim_stat->recent_scanned[0] /= 2; reclaim_stat->recent_rotated[0] /= 2; - spin_unlock_irq(&zone->lru_lock); } if (unlikely(reclaim_stat->recent_scanned[1] > file / 4)) { - spin_lock_irq(&zone->lru_lock); reclaim_stat->recent_scanned[1] /= 2; reclaim_stat->recent_rotated[1] /= 2; - spin_unlock_irq(&zone->lru_lock); } /* - * With swappiness at 100, anonymous and file have the same priority. - * This scanning priority is essentially the inverse of IO cost. - */ - anon_prio = sc->swappiness; - file_prio = 200 - sc->swappiness; - - /* * The amount of pressure on anon vs file pages is inversely * proportional to the fraction of recently scanned pages on * each list that were recently referenced and in active use. @@ -1669,6 +1666,7 @@ static void get_scan_count(struct zone *zone, struct scan_control *sc, fp = (file_prio + 1) * (reclaim_stat->recent_scanned[1] + 1); fp /= reclaim_stat->recent_rotated[1] + 1; + spin_unlock_irq(&zone->lru_lock); fraction[0] = ap; fraction[1] = fp; |