The patch titled
Subject: mm/page_isolation: fix tracepoint to mirror check function behavior
has been added to the -mm tree. Its filename is
mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior.patch
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------------------------------------------------------
From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Joonsoo Kim <js1304@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/page_isolation.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/trace/events/page_isolation.h~mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior include/trace/events/page_isolation.h
--- a/include/trace/events/page_isolation.h~mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior
+++ a/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 */
_
Patches currently in -mm which might be from l.stach@xxxxxxxxxxxxxx are
mm-page_isolation-fix-tracepoint-to-mirror-check-function-behavior.patch
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