Re: [PATCH v2 1/6] mm: introduce vma->vm_flags modifier functions

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On Wed, Jan 25, 2023 at 10:33 AM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
>
> On Wed, Jan 25, 2023 at 12:38:46AM -0800, Suren Baghdasaryan wrote:
> > +/* Use when VMA is not part of the VMA tree and needs no locking */
> > +static inline void init_vm_flags(struct vm_area_struct *vma,
> > +                              unsigned long flags)
> > +{
> > +     vma->vm_flags = flags;
>
> vm_flags are supposed to have type vm_flags_t.  That's not been
> fully realised yet, but perhaps we could avoid making it worse?
>
> >       pgprot_t vm_page_prot;
> > -     unsigned long vm_flags;         /* Flags, see mm.h. */
> > +
> > +     /*
> > +      * Flags, see mm.h.
> > +      * WARNING! Do not modify directly.
> > +      * Use {init|reset|set|clear|mod}_vm_flags() functions instead.
> > +      */
> > +     unsigned long vm_flags;
>
> Including changing this line to vm_flags_t

Good point. Will make the change. Thanks!



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