linux-kernel - [PATCH] mm: Use vma

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Message-Id: <1511364410-13499-1-git-send-email-gomonovych@gmail.com>
Date:   Wed, 22 Nov 2017 16:26:50 +0100
From:   Vasyl Gomonovych <gomonovych@...il.com>
To:     dledford@...hat.com, dave@...olabs.net, mst@...hat.com,
        jglisse@...hat.com, peterz@...radead.org, linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, gomonovych@...il.com
Subject: [PATCH] mm: Use vma_pages helper

Use vma_pages function on vma object instead of explicit computation.
mm/interval_tree.c:21:27-33: WARNING: Consider using vma_pages helper
Generated by: scripts/coccinelle/api/vma_pages.cocci

Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
---
 mm/interval_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/interval_tree.c b/mm/interval_tree.c
index b47664358796..27ddfd29112a 100644
--- a/mm/interval_tree.c
+++ b/mm/interval_tree.c
@@ -18,7 +18,7 @@ static inline unsigned long vma_start_pgoff(struct vm_area_struct *v)
 
 static inline unsigned long vma_last_pgoff(struct vm_area_struct *v)
 {
-	return v->vm_pgoff + ((v->vm_end - v->vm_start) >> PAGE_SHIFT) - 1;
+	return v->vm_pgoff + vma_pages(v) - 1;
 }
 
 INTERVAL_TREE_DEFINE(struct vm_area_struct, shared.rb,
-- 
1.9.1