linux-kernel - [PATCH] mm: Remove useless vma parameter to offset_il

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Message-Id: <1502899755-23146-1-git-send-email-ldufour@linux.vnet.ibm.com>
Date:   Wed, 16 Aug 2017 18:09:15 +0200
From:   Laurent Dufour <ldufour@...ux.vnet.ibm.com>
To:     linux-mm@...ck.org, akpm@...ux-foundation.org, mhocko@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: Remove useless vma parameter to offset_il_node

While reading the code I found that offset_il_node() has a vm_area_struct
pointer parameter which is unused.

Signed-off-by: Laurent Dufour <ldufour@...ux.vnet.ibm.com>
---
 mm/mempolicy.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d911fa5cb2a7..f2598578e63c 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1688,8 +1688,7 @@ unsigned int mempolicy_slab_node(void)
  * node in pol->v.nodes (starting from n=0), wrapping around if n exceeds the
  * number of present nodes.
  */
-static unsigned offset_il_node(struct mempolicy *pol,
-			       struct vm_area_struct *vma, unsigned long n)
+static unsigned offset_il_node(struct mempolicy *pol, unsigned long n)
 {
 	unsigned nnodes = nodes_weight(pol->v.nodes);
 	unsigned target;
@@ -1722,7 +1721,7 @@ static inline unsigned interleave_nid(struct mempolicy *pol,
 		BUG_ON(shift < PAGE_SHIFT);
 		off = vma->vm_pgoff >> (shift - PAGE_SHIFT);
 		off += (addr - vma->vm_start) >> shift;
-		return offset_il_node(pol, vma, off);
+		return offset_il_node(pol, off);
 	} else
 		return interleave_nodes(pol);
 }
@@ -2190,7 +2189,7 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long
 
 		pgoff = vma->vm_pgoff;
 		pgoff += (addr - vma->vm_start) >> PAGE_SHIFT;
-		polnid = offset_il_node(pol, vma, pgoff);
+		polnid = offset_il_node(pol, pgoff);
 		break;
 
 	case MPOL_PREFERRED:
-- 
2.7.4