mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-03 16:13:17 +01:00
Nick Piggin
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 <[email protected]> Signed-off-by: Christoph Lameter <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
42 lines
781 B
C
42 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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