mm/vmscan: make inactive_anon/file_is_low return bool
Make inactive_anon/file_is_low return bool due to these particular functions only using either one or zero as their return value. No functional change. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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14
mm/vmscan.c
14
mm/vmscan.c
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@ -1859,7 +1859,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
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}
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#ifdef CONFIG_SWAP
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static int inactive_anon_is_low_global(struct zone *zone)
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static bool inactive_anon_is_low_global(struct zone *zone)
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{
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unsigned long active, inactive;
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@ -1876,14 +1876,14 @@ static int inactive_anon_is_low_global(struct zone *zone)
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* Returns true if the zone does not have enough inactive anon pages,
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* meaning some active anon pages need to be deactivated.
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*/
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static int inactive_anon_is_low(struct lruvec *lruvec)
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static bool inactive_anon_is_low(struct lruvec *lruvec)
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{
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/*
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* If we don't have swap space, anonymous page deactivation
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* is pointless.
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*/
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if (!total_swap_pages)
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return 0;
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return false;
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if (!mem_cgroup_disabled())
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return mem_cgroup_inactive_anon_is_low(lruvec);
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@ -1891,9 +1891,9 @@ static int inactive_anon_is_low(struct lruvec *lruvec)
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return inactive_anon_is_low_global(lruvec_zone(lruvec));
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}
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#else
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static inline int inactive_anon_is_low(struct lruvec *lruvec)
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static inline bool inactive_anon_is_low(struct lruvec *lruvec)
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{
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return 0;
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return false;
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}
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#endif
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@ -1911,7 +1911,7 @@ static inline int inactive_anon_is_low(struct lruvec *lruvec)
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* This uses a different ratio than the anonymous pages, because
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* the page cache uses a use-once replacement algorithm.
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*/
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static int inactive_file_is_low(struct lruvec *lruvec)
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static bool inactive_file_is_low(struct lruvec *lruvec)
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{
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unsigned long inactive;
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unsigned long active;
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@ -1922,7 +1922,7 @@ static int inactive_file_is_low(struct lruvec *lruvec)
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return active > inactive;
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}
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static int inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru)
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static bool inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru)
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{
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if (is_file_lru(lru))
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return inactive_file_is_low(lruvec);
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