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 49cb8f7..9282116 100644 (file)
--- 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;