On Mon 09-01-23 12:53:07, Suren Baghdasaryan wrote: > diff --git a/kernel/fork.c b/kernel/fork.c > index 5986817f393c..c026d75108b3 100644 > --- a/kernel/fork.c > +++ b/kernel/fork.c > @@ -474,6 +474,7 @@ struct vm_area_struct *vm_area_dup(struct vm_area_struct > *orig) > */ > *new = data_race(*orig); > INIT_LIST_HEAD(&new->anon_vma_chain); > + vma_init_lock(new); > dup_anon_vma_name(orig, new); > } > return new; > @@ -1145,6 +1146,9 @@ static struct mm_struct *mm_init(struct mm_struct *mm, > struct task_struct *p, > seqcount_init(&mm->write_protect_seq); > mmap_init_lock(mm); > INIT_LIST_HEAD(&mm->mmlist); > +#ifdef CONFIG_PER_VMA_LOCK > + WRITE_ONCE(mm->mm_lock_seq, 0); > +#endif
The mm shouldn't be visible so why WRITE_ONCE? -- Michal Hocko SUSE Labs
