AcoSail/kernel_optimize_test
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[PATCH] mm: shrink_inactive_lis() nr_scan accounting fix

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In shrink_inactive_list(), 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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Wu Fengguang 2006-03-22 00:08:28 -08:00 committed by Linus Torvalds
parent c9b02d970c
commit fb8d14e172
1 changed files with 5 additions and 4 deletions
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9
mm/vmscan.c
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@ -1132,9 +1132,6 @@ static unsigned long shrink_inactive_list(unsigned long max_scan,
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 +1143,9 @@ static unsigned long shrink_inactive_list(unsigned long max_scan,
__mod_page_state_zone(zone, pgscan_direct, nr_scan);
__mod_page_state_zone(zone, pgsteal, nr_freed);
if (nr_taken == 0)
goto done;
spin_lock(&zone->lru_lock);
/*
* Put back any unfreeable pages.
@ -1166,8 +1166,9 @@ static unsigned long shrink_inactive_list(unsigned long max_scan,
}
}
} while (nr_scanned < max_scan);
spin_unlock_irq(&zone->lru_lock);
spin_unlock(&zone->lru_lock);
done:
local_irq_enable();
pagevec_release(&pvec);
return nr_reclaimed;
}