From: Libin Date: Thu, 23 May 2013 00:37:10 +0000 (+1000) Subject: mm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT X-Git-Tag: next-20130527~1^2~219 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3eb1a6cb4f6022aea98ac8b532939325e0dcdd2a;p=karo-tx-linux.git mm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT (*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented as a inline funcion vma_pages() in linux/mm.h, so using it. Signed-off-by: Libin Signed-off-by: Andrew Morton --- diff --git a/mm/memory.c b/mm/memory.c index 6dc1882fbd72..44bb67b810c9 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2913,7 +2913,7 @@ static inline void unmap_mapping_range_tree(struct rb_root *root, details->first_index, details->last_index) { vba = vma->vm_pgoff; - vea = vba + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) - 1; + vea = vba + vma_pages(vma) - 1; /* Assume for now that PAGE_CACHE_SHIFT == PAGE_SHIFT */ zba = details->first_index; if (zba < vba) diff --git a/mm/mmap.c b/mm/mmap.c index c0f0558f7057..fcedf517e61d 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -955,7 +955,7 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags, if (is_mergeable_vma(vma, file, vm_flags) && is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { pgoff_t vm_pglen; - vm_pglen = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + vm_pglen = vma_pages(vma); if (vma->vm_pgoff + vm_pglen == vm_pgoff) return 1; }