diff options
| -rw-r--r-- | fs/proc/page.c | 6 | ||||
| -rw-r--r-- | include/linux/page-flags.h | 2 | ||||
| -rw-r--r-- | mm/internal.h | 3 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 |
4 files changed, 6 insertions, 7 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c index b2855ee..0be626d 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -103,9 +103,9 @@ u64 stable_page_flags(struct page *page) * pseudo flags for the well known (anonymous) memory mapped pages * * Note that page->_mapcount is overloaded in SLOB/SLUB/SLQB, so the - * simple test in page_mapcount() is not enough. + * simple test in page_mapped() is not enough. */ - if (!PageSlab(page) && page_mapcount(page)) + if (!PageSlab(page) && page_mapped(page)) u |= 1 << KPF_MMAP; if (PageAnon(page)) u |= 1 << KPF_ANON; @@ -148,6 +148,8 @@ u64 stable_page_flags(struct page *page) */ if (PageBuddy(page)) u |= 1 << KPF_BUDDY; + else if (page_count(page) == 0 && is_free_buddy_page(page)) + u |= 1 << KPF_BUDDY; if (PageBalloon(page)) u |= 1 << KPF_BALLOON; diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 19724e6..5976955 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -593,6 +593,8 @@ static inline void __ClearPageBuddy(struct page *page) atomic_set(&page->_mapcount, -1); } +extern bool is_free_buddy_page(struct page *page); + #define PAGE_BALLOON_MAPCOUNT_VALUE (-256) static inline int PageBalloon(struct page *page) diff --git a/mm/internal.h b/mm/internal.h index ad9400d..b95952c 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -148,9 +148,6 @@ extern int __isolate_free_page(struct page *page, unsigned int order); extern void __free_pages_bootmem(struct page *page, unsigned long pfn, unsigned int order); extern void prep_compound_page(struct page *page, unsigned int order); -#ifdef CONFIG_MEMORY_FAILURE -extern bool is_free_buddy_page(struct page *page); -#endif extern int user_min_free_kbytes; #if defined CONFIG_COMPACTION || defined CONFIG_CMA diff --git a/mm/page_alloc.c b/mm/page_alloc.c index c46b75d..c7332a4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7152,7 +7152,6 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn) } #endif -#ifdef CONFIG_MEMORY_FAILURE bool is_free_buddy_page(struct page *page) { struct zone *zone = page_zone(page); @@ -7171,4 +7170,3 @@ bool is_free_buddy_page(struct page *page) return order < MAX_ORDER; } -#endif |
