diff options
Diffstat (limited to 'mm/page_isolation.c')
| -rw-r--r-- | mm/page_isolation.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 3444b58033c..b70a7fec1ff 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -2,7 +2,6 @@ * linux/mm/page_isolation.c */ -#include <stddef.h> #include <linux/mm.h> #include <linux/page-isolation.h> #include <linux/pageblock-flags.h> @@ -115,8 +114,10 @@ __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn) int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn) { - unsigned long pfn; + unsigned long pfn, flags; struct page *page; + struct zone *zone; + int ret; pfn = start_pfn; /* @@ -132,7 +133,9 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn) if (pfn < end_pfn) return -EBUSY; /* Check all pages are free or Marked as ISOLATED */ - if (__test_page_isolated_in_pageblock(start_pfn, end_pfn)) - return 0; - return -EBUSY; + zone = page_zone(pfn_to_page(pfn)); + spin_lock_irqsave(&zone->lock, flags); + ret = __test_page_isolated_in_pageblock(start_pfn, end_pfn); + spin_unlock_irqrestore(&zone->lock, flags); + return ret ? 0 : -EBUSY; } |