[PATCH] lower VM_DONTCOPY total_vm

[Hugh Dickins]

dup_mmap of a VM_DONTCOPY vma forgot to lower the child's total_vm.  (But
no way does this account for the recent report of total_vm seen too low.)

Signed-off-by: Hugh Dickins <hugh@xxxxxxxxxxx>
---

 kernel/fork.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

--- 2.6.13-rc2-mm1/kernel/fork.c	2005-07-07 12:33:21.000000000 +0100
+++ linux/kernel/fork.c	2005-07-11 18:47:33.000000000 +0100
@@ -210,8 +210,10 @@ static inline int dup_mmap(struct mm_str
 		struct file *file;
 
 		if (mpnt->vm_flags & VM_DONTCOPY) {
+			long pages = vma_pages(mpnt);
+			mm->total_vm -= pages;
 			__vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
-							-vma_pages(mpnt));
+								-pages);
 			continue;
 		}
 		charge = 0;
-
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