x86/mm: use pagetable_free()

commit bf9e4e3 upstream.

The kernel's memory management subsystem provides a dedicated interface,
pagetable_free(), for freeing page table pages.  Updates two call sites to
use pagetable_free() instead of the lower-level __free_page() or
free_pages().  This improves code consistency and clarity, and ensures the
correct freeing mechanism is used.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Acked-by: Mike Rapoport (Microsoft) <[email protected]>
Cc: Alistair Popple <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Betkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Jean-Philippe Brucker <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Kevin Tian <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Robin Murohy <[email protected]>
Cc: Thomas Gleinxer <[email protected]>
Cc: "Uladzislau Rezki (Sony)" <[email protected]>
Cc: Vasant Hegde <[email protected]>
Cc: Vinicius Costa Gomes <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yi Lai <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: LuBaolu

arch/x86/mm/init_64.c

@@ -1031,7 +1031,7 @@ static void __meminit free_pagetable(struct page *page, int order)
 		free_reserved_pages(page, nr_pages);
 #endif
 	} else {
-		__free_pages(page, order);
+		pagetable_free(page_ptdesc(page));
 	}
 }
 

arch/x86/mm/pat/set_memory.c

@@ -429,7 +429,7 @@ static void cpa_collapse_large_pages(struct cpa_data *cpa)
 
 	list_for_each_entry_safe(ptdesc, tmp, &pgtables, pt_list) {
 		list_del(&ptdesc->pt_list);
-		__free_page(ptdesc_page(ptdesc));
+		pagetable_free(ptdesc);
 	}
 }