m68k: mm: Convert free_pointer_table() to use ptdescs

Motorola uses free_pointer_table() for page tables, so it should be using
struct ptdesc, not struct page.

This helps us prepare to allocate ptdescs as their own memory
descriptor, and prepares to remove a user of page->lru.

Signed-off-by: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/20250611001255.527952-3-vishal.moola@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index 8d54c1a7eaf58aa66e7352b859a6258ebdb92562..6d655ef349b4be5b021d394cbfac2f42830c0897 100644 (file)
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -202,21 +202,20 @@ int free_pointer_table(void *table, int type)
 {
        ptable_desc *dp;
        unsigned long ptable = (unsigned long)table;
-       unsigned long page = ptable & PAGE_MASK;
-       unsigned int mask = 1U << ((ptable - page)/ptable_size(type));
+       unsigned long pt_addr = ptable & PAGE_MASK;
+       unsigned int mask = 1U << ((ptable - pt_addr)/ptable_size(type));
 
-       dp = PD_PTABLE(page);
+       dp = PD_PTABLE(pt_addr);
        if (PD_MARKBITS (dp) & mask)
                panic ("table already free!");
 
        PD_MARKBITS (dp) |= mask;
 
        if (PD_MARKBITS(dp) == ptable_mask(type)) {
-               /* all tables in page are free, free page */
+               /* all tables in ptdesc are free, free ptdesc */
                list_del(dp);
-               mmu_page_dtor((void *)page);
-               pagetable_dtor(virt_to_ptdesc((void *)page));
-               free_page (page);
+               mmu_page_dtor((void *)pt_addr);
+               pagetable_dtor_free(virt_to_ptdesc((void *)pt_addr));
                return 1;
        } else if (ptable_list[type].next != dp) {
                /*