[PATCH] lower VM_DONTCOPY total_vm

3b6bfcdb · Hugh Dickins <[email protected]> · 2005-07-12 13:58:09 -07:00

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 <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 3b6bfcdb116f2cc2cab921fcac6d39d4022952d2
Parents: 70d1d47c

Changes

1 files changed · +3 −1

File	Status	Add	Del	Content
kernel/fork.c	modified	+3	−1	View file

kernel/fork.c

View file

diff --git a/kernel/fork.c b/kernel/fork.c
index cdef6ce..b65187f 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -208,8 +208,10 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm)
 		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;