/* Always put back VM_ACCOUNT since we won't unmap */
vma->vm_flags |= VM_ACCOUNT;
- vm_acct_memory(vma_pages(new_vma));
+ vm_acct_memory(new_len >> PAGE_SHIFT);
}
+ /*
+ * VMAs can actually be merged back together in copy_vma
+ * calling merge_vma. This can happen with anonymous vmas
+ * which have not yet been faulted, so if we were to consider
+ * this VMA split we'll end up adding VM_ACCOUNT on the
+ * next VMA, which is completely unrelated if this VMA
+ * was re-merged.
+ */
+ if (split && new_vma == vma)
+ split = 0;
+
/* We always clear VM_LOCKED[ONFAULT] on the old vma */
vma->vm_flags &= VM_LOCKED_CLEAR_MASK;