forked from mirrors/linux
053837fce7
Migration code currently does not take a reference to target page properly, so between unlocking the pte and trying to take a new reference to the page with isolate_lru_page, anything could happen to it. Fix this by holding the pte lock until we get a chance to elevate the refcount. Other small cleanups while we're here. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
41 lines
781 B
C
41 lines
781 B
C
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static inline void
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add_page_to_active_list(struct zone *zone, struct page *page)
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{
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list_add(&page->lru, &zone->active_list);
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zone->nr_active++;
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}
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static inline void
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add_page_to_inactive_list(struct zone *zone, struct page *page)
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{
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list_add(&page->lru, &zone->inactive_list);
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zone->nr_inactive++;
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}
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static inline void
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del_page_from_active_list(struct zone *zone, struct page *page)
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{
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list_del(&page->lru);
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zone->nr_active--;
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}
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static inline void
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del_page_from_inactive_list(struct zone *zone, struct page *page)
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{
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list_del(&page->lru);
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zone->nr_inactive--;
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}
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static inline void
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del_page_from_lru(struct zone *zone, struct page *page)
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{
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list_del(&page->lru);
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if (PageActive(page)) {
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ClearPageActive(page);
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zone->nr_active--;
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} else {
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zone->nr_inactive--;
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}
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}
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