m68k: remove use of page->index

Switch to using struct ptdesc to store the markbits which will allow us to
remove index from struct page.

Link: https://lkml.kernel.org/r/20250516151332.3705351-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2025-05-16 16:13:29 +01:00 committed by Andrew Morton
parent c544a952ba
commit e94715982c

View file

@ -105,7 +105,8 @@ static struct list_head ptable_list[3] = {
#define PD_PTABLE(page) ((ptable_desc *)&(virt_to_page((void *)(page))->lru))
#define PD_PAGE(ptable) (list_entry(ptable, struct page, lru))
#define PD_MARKBITS(dp) (*(unsigned int *)&PD_PAGE(dp)->index)
#define PD_PTDESC(ptable) (list_entry(ptable, struct ptdesc, pt_list))
#define PD_MARKBITS(dp) (*(unsigned int *)&PD_PTDESC(dp)->pt_index)
static const int ptable_shift[3] = {
7+2, /* PGD */