mm/page_isolation: fix tracepoint to mirror check function behavior

Page isolation has not failed if the fin pfn extends beyond the end pfn
and test_pages_isolated checks this correctly.  Fix the tracepoint to
report the same result as the actual check function.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/trace/events/page_isolation.h b/include/trace/events/page_isolation.h
index 6fb644029c8018bae5518d0d7be21cc55efc4c4d..8738a78e6bf491a4691ed1dd232463ac78fb80fd 100644 (file)
--- a/include/trace/events/page_isolation.h
+++ b/include/trace/events/page_isolation.h
@@ -29,7 +29,7 @@ TRACE_EVENT(test_pages_isolated,
 
        TP_printk("start_pfn=0x%lx end_pfn=0x%lx fin_pfn=0x%lx ret=%s",
                __entry->start_pfn, __entry->end_pfn, __entry->fin_pfn,
-               __entry->end_pfn == __entry->fin_pfn ? "success" : "fail")
+               __entry->end_pfn <= __entry->fin_pfn ? "success" : "fail")
 );
 
 #endif /* _TRACE_PAGE_ISOLATION_H */