[PATCH v1 7/9] mm: Introduce unmap_desc struct to reduce function arguments

[Lorenzo Stoakes]

On Tue, Sep 09, 2025 at 02:44:05PM -0700, Suren Baghdasaryan wrote:
> On Tue, Sep 9, 2025 at 12:11 PM Liam R. Howlett <Liam.Howlett at oracle.com> wrote:
> > +struct unmap_desc {
> > +       struct  ma_state *mas;        /* the maple state point to the first vma */
> > +       struct vm_area_struct *first; /* The first vma */
> > +       unsigned long first_pgaddr;   /* The first pagetable address to free */
> > +       unsigned long last_pgaddr;    /* The last pagetable address to free */
> > +       unsigned long vma_min;        /* The min vma address */
> > +       unsigned long vma_max;        /* The max vma address */
> > +       unsigned long tree_max;       /* Maximum for the vma tree search */
> > +       unsigned long tree_reset;     /* Where to reset the vma tree walk */
> > +       bool mm_wr_locked;            /* If the mmap write lock is held */
> > +};
> > +
> > +#define UNMAP_REGION(name, _vmi, _vma, _vma_min, _vma_max, _prev, _next)      \
>
> Maybe DEFINE_UNMAP_REGION() similar to DEFINE_PER_CPU() or DEFINE_SPINLOCK()?

Look at MMAP_STATE(), VMG_MMAP_STATE() for precedent in vma.c