ext4: Fallback to vmalloc if kmalloc can't allocate s_flex_groups array

[safe/jmp/linux-2.6] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 62773ab..8a45093 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -22,13 +22,17 @@
 #include <asm/pgalloc.h>
 #include <asm/pat.h>
 
-#ifdef CONFIG_X86_64
-
-static inline int phys_addr_valid(unsigned long addr)
+static inline int phys_addr_valid(resource_size_t addr)
 {
-       return addr < (1UL << boot_cpu_data.x86_phys_bits);
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+       return !(addr >> boot_cpu_data.x86_phys_bits);
+#else
+       return 1;
+#endif
 }
 
+#ifdef CONFIG_X86_64
+
 unsigned long __phys_addr(unsigned long x)
 {
        if (x >= __START_KERNEL_map) {
@@ -65,11 +69,6 @@ EXPORT_SYMBOL(__virt_addr_valid);
 
 #else
 
-static inline int phys_addr_valid(unsigned long addr)
-{
-       return 1;
-}
-
 #ifdef CONFIG_DEBUG_VIRTUAL
 unsigned long __phys_addr(unsigned long x)
 {
@@ -87,6 +86,8 @@ bool __virt_addr_valid(unsigned long x)
                return false;
        if (__vmalloc_start_set && is_vmalloc_addr((void *) x))
                return false;
+       if (x >= FIXADDR_START)
+               return false;
        return pfn_valid((x - PAGE_OFFSET) >> PAGE_SHIFT);
 }
 EXPORT_SYMBOL(__virt_addr_valid);
@@ -279,15 +280,16 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
                return NULL;
        area->phys_addr = phys_addr;
        vaddr = (unsigned long) area->addr;
-       if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
+
+       if (kernel_map_sync_memtype(phys_addr, size, prot_val)) {
                free_memtype(phys_addr, phys_addr + size);
                free_vm_area(area);
                return NULL;
        }
 
-       if (ioremap_change_attr(vaddr, size, prot_val) < 0) {
+       if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
                free_memtype(phys_addr, phys_addr + size);
-               vunmap(area->addr);
+               free_vm_area(area);
                return NULL;
        }
 
@@ -373,7 +375,8 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
         * - UC_MINUS for non-WB-able memory with no other conflicting mappings
         * - Inherit from confliting mappings otherwise
         */
-       err = reserve_memtype(phys_addr, phys_addr + size, -1, &flags);
+       err = reserve_memtype(phys_addr, phys_addr + size,
+                               _PAGE_CACHE_WB, &flags);
        if (err < 0)
                return NULL;
 
@@ -504,13 +507,19 @@ static inline pte_t * __init early_ioremap_pte(unsigned long addr)
        return &bm_pte[pte_index(addr)];
 }
 
+static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;
+
 void __init early_ioremap_init(void)
 {
        pmd_t *pmd;
+       int i;
 
        if (early_ioremap_debug)
                printk(KERN_INFO "early_ioremap_init()\n");
 
+       for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
+               slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
+
        pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
        memset(bm_pte, 0, sizeof(bm_pte));
        pmd_populate_kernel(&init_mm, pmd, bm_pte);
@@ -540,7 +549,7 @@ void __init early_ioremap_reset(void)
 }
 
 static void __init __early_set_fixmap(enum fixed_addresses idx,
-                                  unsigned long phys, pgprot_t flags)
+                                     phys_addr_t phys, pgprot_t flags)
 {
        unsigned long addr = __fix_to_virt(idx);
        pte_t *pte;
@@ -559,7 +568,7 @@ static void __init __early_set_fixmap(enum fixed_addresses idx,
 }
 
 static inline void __init early_set_fixmap(enum fixed_addresses idx,
-                                          unsigned long phys, pgprot_t prot)
+                                          phys_addr_t phys, pgprot_t prot)
 {
        if (after_paging_init)
                __set_fixmap(idx, phys, prot);
@@ -577,6 +586,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
 
 static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
 static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
+
 static int __init check_early_ioremap_leak(void)
 {
        int count = 0;
@@ -598,9 +608,11 @@ static int __init check_early_ioremap_leak(void)
 }
 late_initcall(check_early_ioremap_leak);
 
-static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
+static void __init __iomem *
+__early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
 {
-       unsigned long offset, last_addr;
+       unsigned long offset;
+       resource_size_t last_addr;
        unsigned int nrpages;
        enum fixed_addresses idx0, idx;
        int i, slot;
@@ -616,15 +628,15 @@ static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned lo
        }
 
        if (slot < 0) {
-               printk(KERN_INFO "early_iomap(%08lx, %08lx) not found slot\n",
-                        phys_addr, size);
+               printk(KERN_INFO "early_iomap(%08llx, %08lx) not found slot\n",
+                        (u64)phys_addr, size);
                WARN_ON(1);
                return NULL;
        }
 
        if (early_ioremap_debug) {
-               printk(KERN_INFO "early_ioremap(%08lx, %08lx) [%d] => ",
-                      phys_addr, size, slot);
+               printk(KERN_INFO "early_ioremap(%08llx, %08lx) [%d] => ",
+                      (u64)phys_addr, size, slot);
                dump_stack();
        }
 
@@ -664,20 +676,22 @@ static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned lo
                --nrpages;
        }
        if (early_ioremap_debug)
-               printk(KERN_CONT "%08lx + %08lx\n", offset, fix_to_virt(idx0));
+               printk(KERN_CONT "%08lx + %08lx\n", offset, slot_virt[slot]);
 
-       prev_map[slot] = (void __iomem *)(offset + fix_to_virt(idx0));
+       prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]);
        return prev_map[slot];
 }
 
 /* Remap an IO device */
-void __init __iomem *early_ioremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *
+early_ioremap(resource_size_t phys_addr, unsigned long size)
 {
        return __early_ioremap(phys_addr, size, PAGE_KERNEL_IO);
 }
 
 /* Remap memory */
-void __init __iomem *early_memremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *
+early_memremap(resource_size_t phys_addr, unsigned long size)
 {
        return __early_ioremap(phys_addr, size, PAGE_KERNEL);
 }
@@ -734,8 +748,3 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
        }
        prev_map[slot] = NULL;
 }
-
-void __this_fixmap_does_not_exist(void)
-{
-       WARN_ON(1);
-}