Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3b6bfcdb authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds
Browse files

[PATCH] lower VM_DONTCOPY total_vm 



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: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 70d1d47c

kernel/fork.c

+3 −1
Original line number Original line Diff line number Diff line
@@ -208,8 +208,10 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm) 
		struct file *file;

		struct file *file;





		if (mpnt->vm_flags & VM_DONTCOPY) {

		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,

			__vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,

							-vma_pages(mpnt));

								-pages);

			continue;

			continue;

		}

		}

		charge = 0;

		charge = 0;