Merge branch 'linus' into x86/mm

x86/mm is on 32-rc4 and missing the spinlock namespace changes which
are needed for further commits into this topic.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

9 files changed, 39 insertions, 34 deletions

diff --git a/arch/score/include/asm/asm-offsets.h b/arch/score/include/asm/asm-offsets.h
new file mode 100644
index 00000000000..d370ee36a18
--- /dev/null
+++ b/arch/score/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>
diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
index 07cc8fc457c..1d545d0ce20 100644
--- a/arch/score/include/asm/cacheflush.h
+++ b/arch/score/include/asm/cacheflush.h
@@ -14,9 +14,12 @@ extern void flush_cache_sigtramp(unsigned long addr);
 extern void flush_icache_all(void);
 extern void flush_icache_range(unsigned long start, unsigned long end);
 extern void flush_dcache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_page(struct page *page);
+
+#define PG_dcache_dirty         PG_arch_1
 
 #define flush_cache_dup_mm(mm)                  do {} while (0)
-#define flush_dcache_page(page)                 do {} while (0)
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
 #define flush_dcache_mmap_lock(mapping)         do {} while (0)
 #define flush_dcache_mmap_unlock(mapping)       do {} while (0)
 #define flush_cache_vmap(start, end)            do {} while (0)
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
index 6726ec199dc..529e494712a 100644
--- a/arch/score/include/asm/delay.h
+++ b/arch/score/include/asm/delay.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_SCORE_DELAY_H
 #define _ASM_SCORE_DELAY_H
 
+#include <asm-generic/param.h>
+
 static inline void __delay(unsigned long loops)
 {
         /* 3 cycles per loop. */
diff --git a/arch/score/include/asm/elf.h b/arch/score/include/asm/elf.h
index 43526d9fda9..f478ce94181 100644
--- a/arch/score/include/asm/elf.h
+++ b/arch/score/include/asm/elf.h
@@ -61,7 +61,6 @@ struct task_struct;
 struct pt_regs;
 
 #define CORE_DUMP_USE_REGSET
-#define USE_ELF_CORE_DUMP
 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 
 /* This yields a mask that user programs can use to figure out what
diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
index d92a5a2d36d..1e9ade8e77e 100644
--- a/arch/score/include/asm/page.h
+++ b/arch/score/include/asm/page.h
@@ -74,7 +74,7 @@ extern unsigned long max_pfn;
 #define page_to_bus(page)       (page_to_phys(page))
 #define phys_to_page(paddr)     (pfn_to_page(phys_to_pfn(paddr)))
 
-#define pfn_valid(pfn)          ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
+#define pfn_valid(pfn)          (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn))
 
 #define ARCH_PFN_OFFSET         (PAGE_OFFSET >> PAGE_SHIFT)
 
diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
index 6a2503c75c4..6f898c05787 100644
--- a/arch/score/kernel/setup.c
+++ b/arch/score/kernel/setup.c
@@ -49,6 +49,7 @@ static void __init bootmem_init(void)
 
         min_low_pfn = PFN_UP(MEMORY_START);
         max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);
+        max_mapnr = max_low_pfn - min_low_pfn;
 
         /* Initialize the boot-time allocator with low memory only. */
         bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
index 00124946986..856ed68a58e 100644
--- a/arch/score/kernel/sys_score.c
+++ b/arch/score/kernel/sys_score.c
@@ -36,34 +36,16 @@ asmlinkage long
 sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
           unsigned long flags, unsigned long fd, unsigned long pgoff)
 {
-        int error = -EBADF;
-        struct file *file = NULL;
-
-        if (pgoff & (~PAGE_MASK >> 12))
-                return -EINVAL;
-
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-        if (!(flags & MAP_ANONYMOUS)) {
-                file = fget(fd);
-                if (!file)
-                        return error;
-        }
-
-        down_write(&current->mm->mmap_sem);
-        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-        up_write(&current->mm->mmap_sem);
-
-        if (file)
-                fput(file);
-
-        return error;
+        return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
 }
 
 asmlinkage long
 sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
-        unsigned long flags, unsigned long fd, off_t pgoff)
+        unsigned long flags, unsigned long fd, off_t offset)
 {
-        return sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
+        if (unlikely(offset & ~PAGE_MASK))
+                return -EINVAL;
+        return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
 }
 
 asmlinkage long
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c
index dbac9d9dfdd..b25e9574360 100644
--- a/arch/score/mm/cache.c
+++ b/arch/score/mm/cache.c
@@ -29,6 +29,7 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/fs.h>
 
 #include <asm/mmu_context.h>
 
@@ -51,6 +52,27 @@ static void flush_data_cache_page(unsigned long addr)
         }
 }
 
+void flush_dcache_page(struct page *page)
+{
+        struct address_space *mapping = page_mapping(page);
+        unsigned long addr;
+
+        if (PageHighMem(page))
+                return;
+        if (mapping && !mapping_mapped(mapping)) {
+                set_bit(PG_dcache_dirty, &(page)->flags);
+                return;
+        }
+
+        /*
+         * We could delay the flush for the !page_mapping case too.  But that
+         * case is for exec env/arg pages and those are %99 certainly going to
+         * get faulted into the tlb (and thus flushed) anyways.
+         */
+        addr = (unsigned long) page_address(page);
+        flush_data_cache_page(addr);
+}
+
 /* called by update_mmu_cache. */
 void __update_cache(struct vm_area_struct *vma, unsigned long address,
                 pte_t pte)
@@ -63,11 +85,11 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address,
         if (unlikely(!pfn_valid(pfn)))
                 return;
         page = pfn_to_page(pfn);
-        if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
+        if (page_mapping(page) && test_bit(PG_dcache_dirty, &(page)->flags)) {
                 addr = (unsigned long) page_address(page);
                 if (exec)
                         flush_data_cache_page(addr);
-                clear_bit(PG_arch_1, &page->flags);
+                clear_bit(PG_dcache_dirty, &(page)->flags);
         }
 }
 
diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
index f684a590c21..7f001bbedb0 100644
--- a/arch/score/mm/init.c
+++ b/arch/score/mm/init.c
@@ -83,7 +83,6 @@ void __init mem_init(void)
         unsigned long codesize, reservedpages, datasize, initsize;
         unsigned long tmp, ram = 0;
 
-        max_mapnr = max_low_pfn;
         high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
         totalram_pages += free_all_bootmem();
         totalram_pages -= setup_zero_page();    /* Setup zeroed pages. */
@@ -101,17 +100,13 @@ void __init mem_init(void)
         datasize = (unsigned long) &_edata - (unsigned long) &_etext;
         initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
 
-        kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
-        kclist_add(&kcore_vmalloc, (void *) VMALLOC_START,
-                        VMALLOC_END - VMALLOC_START);
-
         printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
                         "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
                         (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
                         ram << (PAGE_SHIFT-10), codesize >> 10,
                         reservedpages << (PAGE_SHIFT-10), datasize >> 10,
                         initsize >> 10,
-                        (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)));
+                        totalhigh_pages << (PAGE_SHIFT-10));
 }
 #endif /* !CONFIG_NEED_MULTIPLE_NODES */