Re: [PATCH] mm/mlock.c: drop unneeded initialization in munlock_vma_pages_range()

From: Vlastimil Babka
Date: Tue Nov 10 2015 - 04:27:10 EST

On 11/10/2015 01:22 AM, Alexey Klimov wrote:
Before usage page pointer initialized by NULL is reinitialized by
follow_page_mask(). Drop useless init of page pointer in the beginning
of loop.

Signed-off-by: Alexey Klimov <klimov.linux@xxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>

mm/mlock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mlock.c b/mm/mlock.c
index 339d9e0..9cb87cb 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -425,7 +425,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
vma->vm_flags &= VM_LOCKED_CLEAR_MASK;

while (start < end) {
- struct page *page = NULL;
+ struct page *page;
unsigned int page_mask;
unsigned long page_increm;
struct pagevec pvec;

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