When I compiled today, I met following warning. Correct it. mm/memory.c: In function ‘copy_page_range’: include/linux/mmu_notifier.h:235:38: warning: ‘mmun_end’ may be used uninitialized in this function [-Wuninitialized] mm/memory.c:1043:16: note: ‘mmun_end’ was declared here include/linux/mmu_notifier.h:235:38: warning: ‘mmun_start’ may be used uninitialized in this function [-Wuninitialized] mm/memory.c:1042:16: note: ‘mmun_start’ was declared here LD mm/built-in.o Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx> Cc: Haggai Eran <haggaie@xxxxxxxxxxxx> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> --- mm/memory.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index 10e9b38..d000449 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1039,8 +1039,8 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, unsigned long next; unsigned long addr = vma->vm_start; unsigned long end = vma->vm_end; - unsigned long mmun_start; /* For mmu_notifiers */ - unsigned long mmun_end; /* For mmu_notifiers */ + unsigned long uninitialized_var(mmun_start); /* For mmu_notifiers */ + unsigned long uninitialized_var(mmun_end); /* For mmu_notifiers */ int ret; /* -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>