[PATCH] mm: vm_stat_account unshackled

The original vm_stat_account has fallen into disuse, with only one user, and
only one user of vm_stat_unaccount.  It's easier to keep track if we convert
them all to __vm_stat_account, then free it from its __shackles.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 14 insertions, 14 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index fa11d91..e178026 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -832,7 +832,7 @@ none:
 }
 
 #ifdef CONFIG_PROC_FS
-void __vm_stat_account(struct mm_struct *mm, unsigned long flags,
+void vm_stat_account(struct mm_struct *mm, unsigned long flags,
 						struct file *file, long pages)
 {
 	const unsigned long stack_flags
@@ -1110,7 +1110,7 @@ munmap_back:
 	}
 out:	
 	mm->total_vm += len >> PAGE_SHIFT;
-	__vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
+	vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
 	if (vm_flags & VM_LOCKED) {
 		mm->locked_vm += len >> PAGE_SHIFT;
 		make_pages_present(addr, addr + len);
@@ -1475,7 +1475,7 @@ static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size, un
 	mm->total_vm += grow;
 	if (vma->vm_flags & VM_LOCKED)
 		mm->locked_vm += grow;
-	__vm_stat_account(mm, vma->vm_flags, vma->vm_file, grow);
+	vm_stat_account(mm, vma->vm_flags, vma->vm_file, grow);
 	return 0;
 }
 
@@ -1610,15 +1610,15 @@ find_extend_vma(struct mm_struct * mm, unsigned long addr)
  * By the time this function is called, the area struct has been
  * removed from the process mapping list.
  */
-static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *area)
+static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *vma)
 {
-	size_t len = area->vm_end - area->vm_start;
+	long nrpages = vma_pages(vma);
 
-	area->vm_mm->total_vm -= len >> PAGE_SHIFT;
-	if (area->vm_flags & VM_LOCKED)
-		area->vm_mm->locked_vm -= len >> PAGE_SHIFT;
-	vm_stat_unaccount(area);
-	remove_vm_struct(area);
+	mm->total_vm -= nrpages;
+	if (vma->vm_flags & VM_LOCKED)
+		mm->locked_vm -= nrpages;
+	vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
+	remove_vm_struct(vma);
 }
 
 /*
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 57577f6..b426f01 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -168,8 +168,8 @@ success:
 	vma->vm_flags = newflags;
 	vma->vm_page_prot = newprot;
 	change_protection(vma, start, end, newprot);
-	__vm_stat_account(mm, oldflags, vma->vm_file, -nrpages);
-	__vm_stat_account(mm, newflags, vma->vm_file, nrpages);
+	vm_stat_account(mm, oldflags, vma->vm_file, -nrpages);
+	vm_stat_account(mm, newflags, vma->vm_file, nrpages);
 	return 0;
 
 fail:
diff --git a/mm/mremap.c b/mm/mremap.c
index f343fc7..55df8f5 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -233,7 +233,7 @@ static unsigned long move_vma(struct vm_area_struct *vma,
 	 * since do_munmap() will decrement it by old_len == new_len
 	 */
 	mm->total_vm += new_len >> PAGE_SHIFT;
-	__vm_stat_account(mm, vma->vm_flags, vma->vm_file, new_len>>PAGE_SHIFT);
+	vm_stat_account(mm, vma->vm_flags, vma->vm_file, new_len>>PAGE_SHIFT);
 
 	if (do_munmap(mm, old_addr, old_len) < 0) {
 		/* OOM: unable to split vma, just get accounts right */
@@ -384,7 +384,7 @@ unsigned long do_mremap(unsigned long addr,
 				addr + new_len, vma->vm_pgoff, NULL);
 
 			current->mm->total_vm += pages;
-			__vm_stat_account(vma->vm_mm, vma->vm_flags,
+			vm_stat_account(vma->vm_mm, vma->vm_flags,
 							vma->vm_file, pages);
 			if (vma->vm_flags & VM_LOCKED) {
 				current->mm->locked_vm += pages;