Messages in this thread Patch in this message | | | Date | Tue, 7 Mar 2006 09:47:11 +0800 | From | Wu Fengguang <> | Subject | [PATCH] mm: shrink_inactive_lis() nr_scan accounting fix |
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In shrink_inactive_lis(), nr_scan is not accounted when nr_taken is 0. But 0 pages taken does not mean 0 pages scanned.
Move the goto statement below the accounting code to fix it.
Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn> ---
--- linux-2.6.16-rc5-mm2.orig/mm/vmscan.c +++ linux-2.6.16-rc5-mm2/mm/vmscan.c @@ -1132,9 +1132,6 @@ static unsigned long shrink_inactive_lis zone->pages_scanned += nr_scan; spin_unlock_irq(&zone->lru_lock); - if (nr_taken == 0) - goto done; - nr_scanned += nr_scan; nr_freed = shrink_page_list(&page_list, sc); nr_reclaimed += nr_freed; @@ -1146,6 +1143,11 @@ static unsigned long shrink_inactive_lis __mod_page_state_zone(zone, pgscan_direct, nr_scan); __mod_page_state_zone(zone, pgsteal, nr_freed); + if (nr_taken == 0) { + local_irq_enable(); + goto done; + } + spin_lock(&zone->lru_lock); /* * Put back any unfreeable pages. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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