diff options
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/mm/swap.c b/mm/swap.c index bc2442a7b0ee..cce3dda59c59 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -34,19 +34,22 @@ /* How many pages do we try to swap or page in/out together? */ int page_cluster; -void put_page(struct page *page) +static void put_compound_page(struct page *page) { - if (unlikely(PageCompound(page))) { - page = (struct page *)page_private(page); - if (put_page_testzero(page)) { - void (*dtor)(struct page *page); + page = (struct page *)page_private(page); + if (put_page_testzero(page)) { + void (*dtor)(struct page *page); - dtor = (void (*)(struct page *))page[1].mapping; - (*dtor)(page); - } - return; + dtor = (void (*)(struct page *))page[1].lru.next; + (*dtor)(page); } - if (put_page_testzero(page)) +} + +void put_page(struct page *page) +{ + if (unlikely(PageCompound(page))) + put_compound_page(page); + else if (put_page_testzero(page)) __page_cache_release(page); } EXPORT_SYMBOL(put_page); @@ -244,6 +247,15 @@ void release_pages(struct page **pages, int nr, int cold) struct page *page = pages[i]; struct zone *pagezone; + if (unlikely(PageCompound(page))) { + if (zone) { + spin_unlock_irq(&zone->lru_lock); + zone = NULL; + } + put_compound_page(page); + continue; + } + if (!put_page_testzero(page)) continue; |