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| author | Ingo Molnar <mingo@elte.hu> | 2008-10-12 15:05:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-12 15:05:39 +0200 |
| commit | a9b9e81c915e4a57ac3b21d1a7fa7ff184639780 (patch) | |
| tree | 98304395fbb5b9c74fca35b196cd414c1949f280 /mm/page_isolation.c | |
| parent | a8b71a2810386a5ac8f43d2095fe3355f0d8db37 (diff) | |
| parent | fd048088306656824958e7783ffcee27e241b361 (diff) | |
Merge branch 'linus' into x86/memory-corruption-check
Diffstat (limited to 'mm/page_isolation.c')
| -rw-r--r-- | mm/page_isolation.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index c69f84fe038d..b70a7fec1ff6 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -114,8 +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; /* @@ -131,7 +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; } |