1 files changed, 27 insertions, 98 deletions

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 2eea1ff235e..8636e905426 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -4,24 +4,26 @@
  */
 
 #include <linux/stddef.h>
+#include <linux/module.h>
 #include <linux/bootmem.h>
-#include <linux/gfp.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
+#include <linux/slab.h>
 #include <asm/fixmap.h>
 #include <asm/page.h>
-#include "as-layout.h"
-#include "init.h"
-#include "kern.h"
-#include "kern_util.h"
-#include "mem_user.h"
-#include "os.h"
+#include <as-layout.h>
+#include <init.h>
+#include <kern.h>
+#include <kern_util.h>
+#include <mem_user.h>
+#include <os.h>
 
 /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */
 unsigned long *empty_zero_page = NULL;
+EXPORT_SYMBOL(empty_zero_page);
 /* allocated in paging_init and unchanged thereafter */
-unsigned long *empty_bad_page = NULL;
+static unsigned long *empty_bad_page = NULL;
 
 /*
  * Initialized during boot, and readonly for initializing page tables
@@ -40,17 +42,12 @@ static unsigned long brk_end;
 static void setup_highmem(unsigned long highmem_start,
 			  unsigned long highmem_len)
 {
-	struct page *page;
 	unsigned long highmem_pfn;
 	int i;
 
 	highmem_pfn = __pa(highmem_start) >> PAGE_SHIFT;
-	for (i = 0; i < highmem_len >> PAGE_SHIFT; i++) {
-		page = &mem_map[highmem_pfn + i];
-		ClearPageReserved(page);
-		init_page_count(page);
-		__free_page(page);
-	}
+	for (i = 0; i < highmem_len >> PAGE_SHIFT; i++)
+		free_highmem_page(&mem_map[highmem_pfn + i]);
 }
 #endif
 
@@ -68,21 +65,14 @@ void __init mem_init(void)
 	uml_reserved = brk_end;
 
 	/* this will put all low memory onto the freelists */
-	totalram_pages = free_all_bootmem();
+	free_all_bootmem();
 	max_low_pfn = totalram_pages;
 #ifdef CONFIG_HIGHMEM
-	totalhigh_pages = highmem >> PAGE_SHIFT;
-	totalram_pages += totalhigh_pages;
+	setup_highmem(end_iomem, highmem);
 #endif
-	num_physpages = totalram_pages;
 	max_pfn = totalram_pages;
-	printk(KERN_INFO "Memory: %luk available\n",
-	       (unsigned long) nr_free_pages() << (PAGE_SHIFT-10));
+	mem_init_print_info(NULL);
 	kmalloc_ok = 1;
-
-#ifdef CONFIG_HIGHMEM
-	setup_highmem(end_iomem, highmem);
-#endif
 }
 
 /*
@@ -240,37 +230,6 @@ void __init paging_init(void)
 #endif
 }
 
-struct page *arch_validate(struct page *page, gfp_t mask, int order)
-{
-	unsigned long addr, zero = 0;
-	int i;
-
- again:
-	if (page == NULL)
-		return page;
-	if (PageHighMem(page))
-		return page;
-
-	addr = (unsigned long) page_address(page);
-	for (i = 0; i < (1 << order); i++) {
-		current->thread.fault_addr = (void *) addr;
-		if (__do_copy_to_user((void __user *) addr, &zero,
-				     sizeof(zero),
-				     &current->thread.fault_addr,
-				     &current->thread.fault_catcher)) {
-			if (!(mask & __GFP_WAIT))
-				return NULL;
-			else break;
-		}
-		addr += PAGE_SIZE;
-	}
-
-	if (i == (1 << order))
-		return page;
-	page = alloc_pages(mask, order);
-	goto again;
-}
-
 /*
  * This can't do anything because nothing in the kernel image can be freed
  * since it's not in kernel physical memory.
@@ -283,49 +242,10 @@ void free_initmem(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	if (start < end)
-		printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
-		       (end - start) >> 10);
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-	}
+	free_reserved_area((void *)start, (void *)end, -1, "initrd");
 }
 #endif
 
-void show_mem(void)
-{
-	int pfn, total = 0, reserved = 0;
-	int shared = 0, cached = 0;
-	int high_mem = 0;
-	struct page *page;
-
-	printk(KERN_INFO "Mem-info:\n");
-	show_free_areas();
-	printk(KERN_INFO "Free swap:       %6ldkB\n",
-	       nr_swap_pages<<(PAGE_SHIFT-10));
-	pfn = max_mapnr;
-	while (pfn-- > 0) {
-		page = pfn_to_page(pfn);
-		total++;
-		if (PageHighMem(page))
-			high_mem++;
-		if (PageReserved(page))
-			reserved++;
-		else if (PageSwapCache(page))
-			cached++;
-		else if (page_count(page))
-			shared += page_count(page) - 1;
-	}
-	printk(KERN_INFO "%d pages of RAM\n", total);
-	printk(KERN_INFO "%d pages of HIGHMEM\n", high_mem);
-	printk(KERN_INFO "%d reserved pages\n", reserved);
-	printk(KERN_INFO "%d pages shared\n", shared);
-	printk(KERN_INFO "%d pages swap cached\n", cached);
-}
-
 /* Allocate and free page tables. */
 
 pgd_t *pgd_alloc(struct mm_struct *mm)
@@ -359,8 +279,12 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
 	struct page *pte;
 
 	pte = alloc_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
-	if (pte)
-		pgtable_page_ctor(pte);
+	if (!pte)
+		return NULL;
+	if (!pgtable_page_ctor(pte)) {
+		__free_page(pte);
+		return NULL;
+	}
 	return pte;
 }
 
@@ -375,3 +299,8 @@ pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 	return pmd;
 }
 #endif
+
+void *uml_kmalloc(int size, int flags)
+{
+	return kmalloc(size, flags);
+}