diff options
Diffstat (limited to 'mm')
-rw-r--r-- | mm/swap.c | 32 |
1 files changed, 22 insertions, 10 deletions
@@ -34,19 +34,22 @@ | |||
34 | /* How many pages do we try to swap or page in/out together? */ | 34 | /* How many pages do we try to swap or page in/out together? */ |
35 | int page_cluster; | 35 | int page_cluster; |
36 | 36 | ||
37 | void put_page(struct page *page) | 37 | static void put_compound_page(struct page *page) |
38 | { | 38 | { |
39 | if (unlikely(PageCompound(page))) { | 39 | page = (struct page *)page_private(page); |
40 | page = (struct page *)page_private(page); | 40 | if (put_page_testzero(page)) { |
41 | if (put_page_testzero(page)) { | 41 | void (*dtor)(struct page *page); |
42 | void (*dtor)(struct page *page); | ||
43 | 42 | ||
44 | dtor = (void (*)(struct page *))page[1].mapping; | 43 | dtor = (void (*)(struct page *))page[1].mapping; |
45 | (*dtor)(page); | 44 | (*dtor)(page); |
46 | } | ||
47 | return; | ||
48 | } | 45 | } |
49 | if (put_page_testzero(page)) | 46 | } |
47 | |||
48 | void put_page(struct page *page) | ||
49 | { | ||
50 | if (unlikely(PageCompound(page))) | ||
51 | put_compound_page(page); | ||
52 | else if (put_page_testzero(page)) | ||
50 | __page_cache_release(page); | 53 | __page_cache_release(page); |
51 | } | 54 | } |
52 | EXPORT_SYMBOL(put_page); | 55 | EXPORT_SYMBOL(put_page); |
@@ -244,6 +247,15 @@ void release_pages(struct page **pages, int nr, int cold) | |||
244 | struct page *page = pages[i]; | 247 | struct page *page = pages[i]; |
245 | struct zone *pagezone; | 248 | struct zone *pagezone; |
246 | 249 | ||
250 | if (unlikely(PageCompound(page))) { | ||
251 | if (zone) { | ||
252 | spin_unlock_irq(&zone->lru_lock); | ||
253 | zone = NULL; | ||
254 | } | ||
255 | put_compound_page(page); | ||
256 | continue; | ||
257 | } | ||
258 | |||
247 | if (!put_page_testzero(page)) | 259 | if (!put_page_testzero(page)) |
248 | continue; | 260 | continue; |
249 | 261 | ||