From: Muhammad Falak R Wani <falakreyaz@gmail.com>
Date: Sat, 21 May 2016 13:11:38 +0000 (+0530)
Subject: misc: mic: scif: use vma_pages().
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=acde785e492d6ce838f50937f7547124e0837a55;p=openwrt%2Fstaging%2Fblogic.git

misc: mic: scif: use vma_pages().

Replace explicit computation of vma page count by a call to
vma_pages()

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/mic/scif/scif_mmap.c b/drivers/misc/mic/scif/scif_mmap.c
index 49cb8f7b4672..928211677079 100644
--- a/drivers/misc/mic/scif/scif_mmap.c
+++ b/drivers/misc/mic/scif/scif_mmap.c
@@ -552,7 +552,7 @@ static void scif_munmap(struct vm_area_struct *vma)
 {
 	struct scif_endpt *ep;
 	struct vma_pvt *vmapvt = vma->vm_private_data;
-	int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+	int nr_pages = vma_pages(vma);
 	s64 offset;
 	struct scif_rma_req req;
 	struct scif_window *window = NULL;
@@ -614,7 +614,7 @@ int scif_mmap(struct vm_area_struct *vma, scif_epd_t epd)
 	struct scif_window *window = NULL;
 	struct scif_endpt *ep = (struct scif_endpt *)epd;
 	s64 start_offset = vma->vm_pgoff << PAGE_SHIFT;
-	int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+	int nr_pages = vma_pages(vma);
 	int err;
 	struct vma_pvt *vmapvt;