patch-2.1.101 linux/arch/m68k/mm/init.c

• Lines: 58
• Date: Fri May 8 00:15:22 1998
• Orig file: v2.1.100/linux/arch/m68k/mm/init.c
• Orig date: Tue Feb 17 13:12:45 1998

diff -u --recursive --new-file v2.1.100/linux/arch/m68k/mm/init.c linux/arch/m68k/mm/init.c
@@ -30,6 +30,40 @@
 extern void die_if_kernel(char *,struct pt_regs *,long);
 extern void init_kpointer_table(void);
 extern void show_net_buffers(void);
+extern const char PgtabStr_bad_pmd[];
+
+struct pgtable_cache_struct quicklists;
+
+void __bad_pte(pmd_t *pmd)
+{
+	printk("Bad pmd in pte_alloc: %08lx\n", pmd_val(*pmd));
+	pmd_set(pmd, BAD_PAGETABLE);
+}
+
+pte_t *get_pte_slow(pmd_t *pmd, unsigned long offset)
+{
+	pte_t *pte;
+
+	pte = (pte_t *) __get_free_page(GFP_KERNEL);
+	if (pmd_none(*pmd)) {
+		if (pte) {
+			memset(pte, 0, PAGE_SIZE)
+ 			flush_page_to_ram((unsigned long)pte);
+			flush_tlb_kernel_page((unsigned long)pte);
+			nocache_page((unsigned long)pte);
+			pmd_set(pmd, pte);
+			return pte + offset;
+		}
+		pmd_set(pmd, BAD_PAGETABLE);
+		return NULL;
+	}
+	free_page((unsigned long)pte);
+	if (pmd_bad(*pmd)) {
+		__bad_pte(pmd);
+		return NULL;
+	}
+	return (pte_t *) pmd_page(*pmd) + offset;
+}
 
 /*
  * BAD_PAGE is the page that is used for page faults when linux
@@ -76,7 +110,7 @@
 	total++;
 	if (PageReserved(mem_map+i))
 	    reserved++;
-	if (PageSwapCache(mem_map+i))
+	else if (PageSwapCache(mem_map+i))
 	    cached++;
 	else if (!atomic_read(&mem_map[i].count))
 	    free++;
@@ -91,6 +125,7 @@
     printk("%d pages nonshared\n",nonshared);
     printk("%d pages shared\n",shared);
     printk("%d pages swap cached\n",cached);
+    printk("%d pages in page table cache\n",pgtable_cache_size);
     show_buffers();
 #ifdef CONFIG_NET
     show_net_buffers();