The patch titled
Subject: mm/compaction.c: fix warning of 'flags' may be used uninitialized
has been added to the -mm tree. Its filename is
mm-compaction-fix-warning-of-flags-may-be-used-uninitialized.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-fix-warning-of-flags-may-be-used-uninitialized.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-fix-warning-of-flags-may-be-used-uninitialized.patch
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------------------------------------------------------
From: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx>
Subject: mm/compaction.c: fix warning of 'flags' may be used uninitialized
C mm/compaction.o
mm/compaction.c: In function isolate_freepages_block:
mm/compaction.c:364:37: warning: flags may be used uninitialized in this function [-Wmaybe-uninitialized]
&& compact_unlock_should_abort(&cc->zone->lock, flags,
^
Signed-off-by: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/compaction.c~mm-compaction-fix-warning-of-flags-may-be-used-uninitialized mm/compaction.c
--- a/mm/compaction.c~mm-compaction-fix-warning-of-flags-may-be-used-uninitialized
+++ a/mm/compaction.c
@@ -344,7 +344,7 @@ static unsigned long isolate_freepages_b
{
int nr_scanned = 0, total_isolated = 0;
struct page *cursor, *valid_page = NULL;
- unsigned long flags;
+ unsigned long flags = 0;
bool locked = false;
unsigned long blockpfn = *start_pfn;
@@ -573,7 +573,7 @@ isolate_migratepages_block(struct compac
unsigned long nr_scanned = 0, nr_isolated = 0;
struct list_head *migratelist = &cc->migratepages;
struct lruvec *lruvec;
- unsigned long flags;
+ unsigned long flags = 0;
bool locked = false;
struct page *page = NULL, *valid_page = NULL;
_
Patches currently in -mm which might be from Li.Xiubo@xxxxxxxxxxxxx are
mm-compaction-fix-warning-of-flags-may-be-used-uninitialized.patch
linux-next.patch
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