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Diffstat (limited to 'mm/debug.c')
-rw-r--r--mm/debug.c25
1 files changed, 6 insertions, 19 deletions
diff --git a/mm/debug.c b/mm/debug.c
index c1c1a6a484e4..69e524c3e601 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -55,25 +55,17 @@ static void __dump_folio(struct folio *folio, struct page *page,
unsigned long pfn, unsigned long idx)
{
struct address_space *mapping = folio_mapping(folio);
- int mapcount = 0;
+ int mapcount = atomic_read(&page->_mapcount);
char *type = "";
- /*
- * page->_mapcount space in struct page is used by slab pages to
- * encode own info, and we must avoid calling page_folio() again.
- */
- if (!folio_test_slab(folio)) {
- mapcount = atomic_read(&page->_mapcount) + 1;
- if (folio_test_large(folio))
- mapcount += folio_entire_mapcount(folio);
- }
-
+ mapcount = page_type_has_type(mapcount) ? 0 : mapcount + 1;
pr_warn("page: refcount:%d mapcount:%d mapping:%p index:%#lx pfn:%#lx\n",
folio_ref_count(folio), mapcount, mapping,
folio->index + idx, pfn);
if (folio_test_large(folio)) {
- pr_warn("head: order:%u entire_mapcount:%d nr_pages_mapped:%d pincount:%d\n",
+ pr_warn("head: order:%u mapcount:%d entire_mapcount:%d nr_pages_mapped:%d pincount:%d\n",
folio_order(folio),
+ folio_mapcount(folio),
folio_entire_mapcount(folio),
folio_nr_pages_mapped(folio),
atomic_read(&folio->_pincount));
@@ -99,7 +91,8 @@ static void __dump_folio(struct folio *folio, struct page *page,
*/
pr_warn("%sflags: %pGp%s\n", type, &folio->flags,
is_migrate_cma_folio(folio, pfn) ? " CMA" : "");
- pr_warn("page_type: %pGt\n", &folio->page.page_type);
+ if (page_has_type(&folio->page))
+ pr_warn("page_type: %pGt\n", &folio->page.page_type);
print_hex_dump(KERN_WARNING, "raw: ", DUMP_PREFIX_NONE, 32,
sizeof(unsigned long), page,
@@ -180,9 +173,6 @@ EXPORT_SYMBOL(dump_vma);
void dump_mm(const struct mm_struct *mm)
{
pr_emerg("mm %px task_size %lu\n"
-#ifdef CONFIG_MMU
- "get_unmapped_area %px\n"
-#endif
"mmap_base %lu mmap_legacy_base %lu\n"
"pgd %px mm_users %d mm_count %d pgtables_bytes %lu map_count %d\n"
"hiwater_rss %lx hiwater_vm %lx total_vm %lx locked_vm %lx\n"
@@ -208,9 +198,6 @@ void dump_mm(const struct mm_struct *mm)
"def_flags: %#lx(%pGv)\n",
mm, mm->task_size,
-#ifdef CONFIG_MMU
- mm->get_unmapped_area,
-#endif
mm->mmap_base, mm->mmap_legacy_base,
mm->pgd, atomic_read(&mm->mm_users),
atomic_read(&mm->mm_count),