Merge http://linus.bkbits.net/linux-2.5

into maxwell.earthlink.net:/tmp/linus-2.5

53 files changed, 1263 insertions, 226 deletions

diff --git a/include/asm-alpha/rmap.h b/include/asm-alpha/rmap.h
new file mode 100644
index 000000000000..08b2236efd3a
--- /dev/null
+++ b/include/asm-alpha/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _ALPHA_RMAP_H
+#define _ALPHA_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-arm/proc-armv/rmap.h b/include/asm-arm/proc-armv/rmap.h
new file mode 100644
index 000000000000..f775d26eea88
--- /dev/null
+++ b/include/asm-arm/proc-armv/rmap.h
@@ -0,0 +1,51 @@
+#ifndef _ARMV_RMAP_H
+#define _ARMV_RMAP_H
+/*
+ * linux/include/asm-arm/proc-armv/rmap.h
+ *
+ * Architecture dependant parts of the reverse mapping code,
+ *
+ * ARM is different since hardware page tables are smaller than
+ * the page size and Linux uses a "duplicate" one with extra info.
+ * For rmap this means that the first 2 kB of a page are the hardware
+ * page tables and the last 2 kB are the software page tables.
+ */
+
+static inline void pgtable_add_rmap(pte_t * ptep, struct mm_struct * mm, unsigned long address)
+{
+	struct page * page = virt_to_page(ptep);
+
+	page->mm = mm;
+	page->index = address & ~((PTRS_PER_PTE * PAGE_SIZE) - 1);
+	inc_page_state(nr_page_table_pages);
+}
+
+static inline void pgtable_remove_rmap(pte_t * ptep)
+{
+	struct page * page = virt_to_page(ptep);
+
+	page->mm = NULL;
+	page->index = 0;
+	dec_page_state(nr_page_table_pages);
+}
+
+static inline struct mm_struct * ptep_to_mm(pte_t * ptep)
+{
+	struct page * page = virt_to_page(ptep);
+
+	return page->mm;
+}
+
+/* The page table takes half of the page */
+#define PTE_MASK  ((PAGE_SIZE / 2) - 1)
+
+static inline unsigned long ptep_to_address(pte_t * ptep)
+{
+	struct page * page = virt_to_page(ptep);
+	unsigned long low_bits;
+
+	low_bits = ((unsigned long)ptep & PTE_MASK) * PTRS_PER_PTE;
+	return page->index + low_bits;
+}
+
+#endif /* _ARMV_RMAP_H */
diff --git a/include/asm-arm/rmap.h b/include/asm-arm/rmap.h
new file mode 100644
index 000000000000..d79cb373829b
--- /dev/null
+++ b/include/asm-arm/rmap.h
@@ -0,0 +1,6 @@
+#ifndef _ARM_RMAP_H
+#define _ARM_RMAP_H
+
+#include <asm/proc/rmap.h>
+
+#endif /* _ARM_RMAP_H */
diff --git a/include/asm-cris/rmap.h b/include/asm-cris/rmap.h
new file mode 100644
index 000000000000..c5bf2a811657
--- /dev/null
+++ b/include/asm-cris/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _CRIS_RMAP_H
+#define _CRIS_RMAP_H
+
+/* nothing to see, move along :) */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-generic/rmap.h b/include/asm-generic/rmap.h
new file mode 100644
index 000000000000..c7045f3e6923
--- /dev/null
+++ b/include/asm-generic/rmap.h
@@ -0,0 +1,54 @@
+#ifndef _GENERIC_RMAP_H
+#define _GENERIC_RMAP_H
+/*
+ * linux/include/asm-generic/rmap.h
+ *
+ * Architecture dependant parts of the reverse mapping code,
+ * this version should work for most architectures with a
+ * 'normal' page table layout.
+ *
+ * We use the struct page of the page table page to find out
+ * the process and full address of a page table entry:
+ * - page->mapping points to the process' mm_struct
+ * - page->index has the high bits of the address
+ * - the lower bits of the address are calculated from the
+ *   offset of the page table entry within the page table page
+ */
+#include <linux/mm.h>
+
+static inline void pgtable_add_rmap(struct page * page, struct mm_struct * mm, unsigned long address)
+{
+#ifdef BROKEN_PPC_PTE_ALLOC_ONE
+	/* OK, so PPC calls pte_alloc() before mem_map[] is setup ... ;( */
+	extern int mem_init_done;
+
+	if (!mem_init_done)
+		return;
+#endif
+	page->mapping = (void *)mm;
+	page->index = address & ~((PTRS_PER_PTE * PAGE_SIZE) - 1);
+	inc_page_state(nr_page_table_pages);
+}
+
+static inline void pgtable_remove_rmap(struct page * page)
+{
+	page->mapping = NULL;
+	page->index = 0;
+	dec_page_state(nr_page_table_pages);
+}
+
+static inline struct mm_struct * ptep_to_mm(pte_t * ptep)
+{
+	struct page * page = virt_to_page(ptep);
+	return (struct mm_struct *) page->mapping;
+}
+
+static inline unsigned long ptep_to_address(pte_t * ptep)
+{
+	struct page * page = virt_to_page(ptep);
+	unsigned long low_bits;
+	low_bits = ((unsigned long)ptep & ~PAGE_MASK) * PTRS_PER_PTE;
+	return page->index + low_bits;
+}
+
+#endif /* _GENERIC_RMAP_H */
diff --git a/include/asm-generic/smplock.h b/include/asm-generic/smplock.h
index 96565069c988..d77431f2cb25 100644
--- a/include/asm-generic/smplock.h
+++ b/include/asm-generic/smplock.h
@@ -13,11 +13,10 @@ extern spinlock_t kernel_flag;
 /*
  * Release global kernel lock and global interrupt lock
  */
-#define release_kernel_lock(task, cpu) \
+#define release_kernel_lock(task) \
 do { \
 	if (task->lock_depth >= 0) \
 		spin_unlock(&kernel_flag); \
-	release_irqlock(cpu); \
 	__sti(); \
 } while (0)
 
diff --git a/include/asm-i386/hardirq.h b/include/asm-i386/hardirq.h
index ed73b0444f6b..cbd78d1dcaa1 100644
--- a/include/asm-i386/hardirq.h
+++ b/include/asm-i386/hardirq.h
@@ -8,8 +8,6 @@
 /* assembly code in softirq.h is sensitive to the offsets of these fields */
 typedef struct {
 	unsigned int __softirq_pending;
-	unsigned int __local_irq_count;
-	unsigned int __local_bh_count;
 	unsigned int __syscall_count;
 	struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
 	unsigned long idle_timestamp;
@@ -18,77 +16,27 @@ typedef struct {
 
 #include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
 
+#define IRQ_OFFSET 64
+
 /*
  * Are we in an interrupt context? Either doing bottom half
  * or hardware interrupt processing?
  */
-#define in_interrupt() ({ int __cpu = smp_processor_id(); \
-	(local_irq_count(__cpu) + local_bh_count(__cpu) != 0); })
-
-#define in_irq() (local_irq_count(smp_processor_id()) != 0)
-
-#ifndef CONFIG_SMP
-
-#define hardirq_trylock(cpu)	(local_irq_count(cpu) == 0)
-#define hardirq_endlock(cpu)	do { } while (0)
+#define in_interrupt() \
+		((preempt_count() & ~PREEMPT_ACTIVE) >= IRQ_OFFSET)
 
-#define irq_enter(cpu, irq)	(local_irq_count(cpu)++)
-#define irq_exit(cpu, irq)	(local_irq_count(cpu)--)
+#define in_irq in_interrupt
 
-#define synchronize_irq()	barrier()
+#define hardirq_trylock()	(!in_interrupt())
+#define hardirq_endlock()	do { } while (0)
 
-#define release_irqlock(cpu)	do { } while (0)
+#define irq_enter()		(preempt_count() += IRQ_OFFSET)
+#define irq_exit()		(preempt_count() -= IRQ_OFFSET)
 
+#ifndef CONFIG_SMP
+# define synchronize_irq(irq)	barrier()
 #else
-
-#include <asm/atomic.h>
-#include <asm/smp.h>
-
-extern unsigned char global_irq_holder;
-extern unsigned volatile long global_irq_lock; /* long for set_bit -RR */
-
-static inline int irqs_running (void)
-{
-	int i;
-
-	for (i = 0; i < NR_CPUS; i++)
-		if (local_irq_count(i))
-			return 1;
-	return 0;
-}
-
-static inline void release_irqlock(int cpu)
-{
-	/* if we didn't own the irq lock, just ignore.. */
-	if (global_irq_holder == (unsigned char) cpu) {
-		global_irq_holder = NO_PROC_ID;
-		clear_bit(0,&global_irq_lock);
-	}
-}
-
-static inline void irq_enter(int cpu, int irq)
-{
-	++local_irq_count(cpu);
-
-	while (test_bit(0,&global_irq_lock)) {
-		cpu_relax();
-	}
-}
-
-static inline void irq_exit(int cpu, int irq)
-{
-	--local_irq_count(cpu);
-}
-
-static inline int hardirq_trylock(int cpu)
-{
-	return !local_irq_count(cpu) && !test_bit(0,&global_irq_lock);
-}
-
-#define hardirq_endlock(cpu)	do { } while (0)
-
-extern void synchronize_irq(void);
-
+  extern void synchronize_irq(unsigned int irq);
 #endif /* CONFIG_SMP */
 
 #endif /* __ASM_HARDIRQ_H */
diff --git a/include/asm-i386/rmap.h b/include/asm-i386/rmap.h
new file mode 100644
index 000000000000..5989b2938b5b
--- /dev/null
+++ b/include/asm-i386/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _I386_RMAP_H
+#define _I386_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-i386/smplock.h b/include/asm-i386/smplock.h
index 888a7b82f103..8bee3fd434c0 100644
--- a/include/asm-i386/smplock.h
+++ b/include/asm-i386/smplock.h
@@ -12,15 +12,9 @@ extern spinlock_t kernel_flag;
 
 #ifdef CONFIG_SMP
 #define kernel_locked()		spin_is_locked(&kernel_flag)
-#define check_irq_holder(cpu) \
-do { \
-	if (global_irq_holder == (cpu)) \
-		BUG(); \
-} while(0)
 #else
 #ifdef CONFIG_PREEMPT
-#define kernel_locked()		preempt_get_count()
-#define check_irq_holder(cpu)	do { } while(0)
+#define kernel_locked()		preempt_count()
 #else
 #define kernel_locked()		1
 #endif
@@ -29,12 +23,10 @@ do { \
 /*
  * Release global kernel lock and global interrupt lock
  */
-#define release_kernel_lock(task, cpu)		\
+#define release_kernel_lock(task)		\
 do {						\
-	if (unlikely(task->lock_depth >= 0)) {	\
+	if (unlikely(task->lock_depth >= 0))	\
 		spin_unlock(&kernel_flag);	\
-		check_irq_holder(cpu);		\
-	}					\
 } while (0)
 
 /*
diff --git a/include/asm-i386/softirq.h b/include/asm-i386/softirq.h
index c62cbece6ce7..c28019d821af 100644
--- a/include/asm-i386/softirq.h
+++ b/include/asm-i386/softirq.h
@@ -1,50 +1,27 @@
 #ifndef __ASM_SOFTIRQ_H
 #define __ASM_SOFTIRQ_H
 
-#include <asm/atomic.h>
+#include <linux/preempt.h>
 #include <asm/hardirq.h>
 
-#define __cpu_bh_enable(cpu) \
-		do { barrier(); local_bh_count(cpu)--; preempt_enable(); } while (0)
-#define cpu_bh_disable(cpu) \
-		do { preempt_disable(); local_bh_count(cpu)++; barrier(); } while (0)
+#define local_bh_disable() \
+		do { preempt_count() += IRQ_OFFSET; barrier(); } while (0)
+#define __local_bh_enable() \
+		do { barrier(); preempt_count() -= IRQ_OFFSET; } while (0)
 
-#define local_bh_disable()	cpu_bh_disable(smp_processor_id())
-#define __local_bh_enable()	__cpu_bh_enable(smp_processor_id())
-
-#define in_softirq() (local_bh_count(smp_processor_id()) != 0)
-
-/*
- * NOTE: this assembly code assumes:
- *
- *    (char *)&local_bh_count - 8 == (char *)&softirq_pending
- *
- * If you change the offsets in irq_stat then you have to
- * update this code as well.
- */
-#define _local_bh_enable()						\
+#define local_bh_enable()						\
 do {									\
-	unsigned int *ptr = &local_bh_count(smp_processor_id());	\
-									\
-	barrier();							\
-	if (!--*ptr)							\
-		__asm__ __volatile__ (					\
-			"cmpl $0, -8(%0);"				\
-			"jnz 2f;"					\
-			"1:;"						\
-									\
-			LOCK_SECTION_START("")				\
-			"2: pushl %%eax; pushl %%ecx; pushl %%edx;"	\
-			"call %c1;"					\
-			"popl %%edx; popl %%ecx; popl %%eax;"		\
-			"jmp 1b;"					\
-			LOCK_SECTION_END				\
-									\
-		: /* no output */					\
-		: "r" (ptr), "i" (do_softirq)				\
-		/* no registers clobbered */ );				\
+	if (unlikely((preempt_count() == IRQ_OFFSET) &&			\
+				softirq_pending(smp_processor_id()))) { \
+		__local_bh_enable();					\
+		do_softirq();						\
+		preempt_check_resched();				\
+	} else {							\
+		__local_bh_enable();					\
+		preempt_check_resched();				\
+	}								\
 } while (0)
 
-#define local_bh_enable() do { _local_bh_enable(); preempt_enable(); } while (0)
+#define in_softirq() in_interrupt()
 
 #endif	/* __ASM_SOFTIRQ_H */
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h
index 851f090e4394..7d9fa1282e26 100644
--- a/include/asm-i386/system.h
+++ b/include/asm-i386/system.h
@@ -324,24 +324,14 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define local_irq_disable()	__cli()
 #define local_irq_enable()	__sti()
 
-#ifdef CONFIG_SMP
-
-extern void __global_cli(void);
-extern void __global_sti(void);
-extern unsigned long __global_save_flags(void);
-extern void __global_restore_flags(unsigned long);
-#define cli() __global_cli()
-#define sti() __global_sti()
-#define save_flags(x) ((x)=__global_save_flags())
-#define restore_flags(x) __global_restore_flags(x)
-
-#else
-
-#define cli() __cli()
-#define sti() __sti()
-#define save_flags(x) __save_flags(x)
-#define restore_flags(x) __restore_flags(x)
-
+/*
+ * Compatibility macros - they will be removed after some time.
+ */
+#if !CONFIG_SMP
+# define sti() __sti()
+# define cli() __cli()
+# define save_flags(flags) __save_flags(flags)
+# define restore_flags(flags) __restore_flags(flags)
 #endif
 
 /*
diff --git a/include/asm-ia64/rmap.h b/include/asm-ia64/rmap.h
new file mode 100644
index 000000000000..6738fe9e228f
--- /dev/null
+++ b/include/asm-ia64/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _IA64_RMAP_H
+#define _IA64_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-m68k/rmap.h b/include/asm-m68k/rmap.h
new file mode 100644
index 000000000000..85119e4145b6
--- /dev/null
+++ b/include/asm-m68k/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _M68K_RMAP_H
+#define _M68K_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-mips/rmap.h b/include/asm-mips/rmap.h
new file mode 100644
index 000000000000..2dc334a3b5f7
--- /dev/null
+++ b/include/asm-mips/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _MIPS_RMAP_H
+#define _MIPS_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-mips64/rmap.h b/include/asm-mips64/rmap.h
new file mode 100644
index 000000000000..07df131559c1
--- /dev/null
+++ b/include/asm-mips64/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _MIPS64_RMAP_H
+#define _MIPS64_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-parisc/rmap.h b/include/asm-parisc/rmap.h
new file mode 100644
index 000000000000..4ea8eb454751
--- /dev/null
+++ b/include/asm-parisc/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _PARISC_RMAP_H
+#define _PARISC_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-ppc/rmap.h b/include/asm-ppc/rmap.h
new file mode 100644
index 000000000000..50556b5ff25c
--- /dev/null
+++ b/include/asm-ppc/rmap.h
@@ -0,0 +1,9 @@
+#ifndef _PPC_RMAP_H
+#define _PPC_RMAP_H
+
+/* PPC calls pte_alloc() before mem_map[] is setup ... */
+#define BROKEN_PPC_PTE_ALLOC_ONE
+
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-s390/rmap.h b/include/asm-s390/rmap.h
new file mode 100644
index 000000000000..43d6a87b6e86
--- /dev/null
+++ b/include/asm-s390/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _S390_RMAP_H
+#define _S390_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-s390x/rmap.h b/include/asm-s390x/rmap.h
new file mode 100644
index 000000000000..c41a23a18e4d
--- /dev/null
+++ b/include/asm-s390x/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _S390X_RMAP_H
+#define _S390X_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-sh/rmap.h b/include/asm-sh/rmap.h
new file mode 100644
index 000000000000..31db8cc07739
--- /dev/null
+++ b/include/asm-sh/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _SH_RMAP_H
+#define _SH_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-sparc/rmap.h b/include/asm-sparc/rmap.h
new file mode 100644
index 000000000000..06063cffe7d2
--- /dev/null
+++ b/include/asm-sparc/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _SPARC_RMAP_H
+#define _SPARC_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/asm-sparc64/rmap.h b/include/asm-sparc64/rmap.h
new file mode 100644
index 000000000000..681849b2dce5
--- /dev/null
+++ b/include/asm-sparc64/rmap.h
@@ -0,0 +1,7 @@
+#ifndef _SPARC64_RMAP_H
+#define _SPARC64_RMAP_H
+
+/* nothing to see, move along */
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/include/linux/adfs_fs_i.h b/include/linux/adfs_fs_i.h
index 442282509489..6341f7059b0b 100644
--- a/include/linux/adfs_fs_i.h
+++ b/include/linux/adfs_fs_i.h
@@ -11,7 +11,7 @@
  * adfs file system inode data in memory
  */
 struct adfs_inode_info {
-	unsigned long	mmu_private;
+	loff_t		mmu_private;
 	unsigned long	parent_id;	/* object id of parent		*/
 	__u32		loadaddr;	/* RISC OS load address		*/
 	__u32		execaddr;	/* RISC OS exec address		*/
diff --git a/include/linux/affs_fs_i.h b/include/linux/affs_fs_i.h
index 89872f778538..3ad824b7f30f 100644
--- a/include/linux/affs_fs_i.h
+++ b/include/linux/affs_fs_i.h
@@ -35,7 +35,7 @@ struct affs_inode_info {
 	struct affs_ext_key *i_ac;		/* associative cache of extended blocks */
 	u32	 i_ext_last;			/* last accessed extended block */
 	struct buffer_head *i_ext_bh;		/* bh of last extended block */
-	unsigned long mmu_private;
+	loff_t	 mmu_private;
 	u32	 i_protect;			/* unused attribute bits */
 	u32	 i_lastalloc;			/* last allocated block */
 	int	 i_pa_cnt;			/* number of preallocated blocks */
diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index 10820786560e..ffd04e267abe 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -81,13 +81,13 @@ enum chipset_type {
 	HP_ZX1,
 };
 
-typedef struct _agp_version {
+struct agp_version {
 	u16 major;
 	u16 minor;
-} agp_version;
+};
 
 typedef struct _agp_kern_info {
-	agp_version version;
+	struct agp_version version;
 	struct pci_dev *device;
 	enum chipset_type chipset;
 	unsigned long mode;
diff --git a/include/linux/agpgart.h b/include/linux/agpgart.h
index d18b71dc7357..af97a9c76da4 100644
--- a/include/linux/agpgart.h
+++ b/include/linux/agpgart.h
@@ -53,13 +53,13 @@
 #include <linux/types.h>
 #include <asm/types.h>
 
-typedef struct _agp_version {
+struct agp_version {
 	__u16 major;
 	__u16 minor;
-} agp_version;
+};
 
 typedef struct _agp_info {
-	agp_version version;	/* version of the driver        */
+	struct agp_version version;	/* version of the driver        */
 	__u32 bridge_id;	/* bridge vendor/device         */
 	__u32 agp_mode;		/* mode info of bridge          */
 	off_t aper_base;	/* base of aperture             */
@@ -117,7 +117,7 @@ typedef struct _agp_unbind {
 #define AGP_LOCK_INIT() 	sema_init(&(agp_fe.agp_mutex), 1)
 
 #ifndef _AGP_BACKEND_H
-typedef struct _agp_version {
+struct _agp_version {
 	u16 major;
 	u16 minor;
 } agp_version;
@@ -125,7 +125,7 @@ typedef struct _agp_version {
 #endif
 
 typedef struct _agp_info {
-	agp_version version;	/* version of the driver        */
+	struct agp_version version;	/* version of the driver        */
 	u32 bridge_id;		/* bridge vendor/device         */
 	u32 agp_mode;		/* mode info of bridge          */
 	off_t aper_base;	/* base of aperture             */
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index fe17499f6144..314addb2329d 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -28,6 +28,7 @@ struct linux_binprm{
 	struct file * file;
 	int e_uid, e_gid;
 	kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
+	void *security;
 	int argc, envc;
 	char * filename;	/* Name of binary */
 	unsigned long loader, exec;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 297cb0ba10c1..7460a98bb0b3 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -389,20 +389,6 @@ extern inline unsigned int block_size(struct block_device *bdev)
 	return bdev->bd_block_size;
 }
 
-static inline loff_t blkdev_size_in_bytes(kdev_t dev)
-{
-#if 0
-	if (blk_size_in_bytes[major(dev)])
-		return blk_size_in_bytes[major(dev)][minor(dev)];
-	else
-#endif
-	if (blk_size[major(dev)])
-		return (loff_t) blk_size[major(dev)][minor(dev)]
-			<< BLOCK_SIZE_BITS;
-	else
-		return 0;
-}
-
 typedef struct {struct page *v;} Sector;
 
 unsigned char *read_dev_sector(struct block_device *, unsigned long, Sector *);
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index b07e937f900b..f9c9aafdf036 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -178,7 +178,7 @@ int block_write_full_page(struct page*, get_block_t*);
 int block_read_full_page(struct page*, get_block_t*);
 int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*);
 int cont_prepare_write(struct page*, unsigned, unsigned, get_block_t*,
-				unsigned long *);
+				loff_t *);
 int generic_cont_expand(struct inode *inode, loff_t size) ;
 int block_commit_write(struct page *page, unsigned from, unsigned to);
 int block_sync_page(struct page *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2ac85b8e28a3..b58c1b43f734 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -274,7 +274,6 @@ struct iattr {
  */
 struct page;
 struct address_space;
-struct kiobuf;
 
 struct address_space_operations {
 	int (*writepage)(struct page *);
@@ -343,7 +342,7 @@ struct block_device {
 	struct inode *		bd_inode;
 	dev_t			bd_dev;  /* not a kdev_t - it's a search key */
 	int			bd_openers;
-	const struct block_device_operations *bd_op;
+	struct block_device_operations *bd_op;
 	struct request_queue	*bd_queue;
 	struct semaphore	bd_sem;	/* open/close mutex */
 	struct list_head	bd_inodes;
@@ -351,6 +350,9 @@ struct block_device {
 	int			bd_holders;
 	struct block_device *	bd_contains;
 	unsigned		bd_block_size;
+	unsigned long		bd_offset;
+	struct semaphore	bd_part_sem;
+	unsigned		bd_part_count;
 };
 
 struct inode {
@@ -493,10 +495,6 @@ struct file {
 
 	/* needed for tty driver, and maybe others */
 	void			*private_data;
-
-	/* preallocated helper kiobuf to speedup O_DIRECT */
-	struct kiobuf		*f_iobuf;
-	long			f_iobuf_lock;
 };
 extern spinlock_t files_lock;
 #define file_list_lock() spin_lock(&files_lock);
@@ -1087,7 +1085,7 @@ extern void bd_release(struct block_device *);
 extern void blk_run_queues(void);
 
 /* fs/devices.c */
-extern const struct block_device_operations *get_blkfops(unsigned int);
+extern struct block_device_operations *get_blkfops(unsigned int);
 extern int register_chrdev(unsigned int, const char *, struct file_operations *);
 extern int unregister_chrdev(unsigned int, const char *);
 extern int chrdev_open(struct inode *, struct file *);
@@ -1297,5 +1295,31 @@ static inline ino_t parent_ino(struct dentry *dentry)
 	return res;
 }
 
+/* NOTE NOTE NOTE: this interface _will_ change in a couple of patches */
+
+static inline int dev_lock_part(kdev_t dev)
+{
+	struct block_device *bdev = bdget(kdev_t_to_nr(dev));
+	if (!bdev)
+		return -ENOMEM;
+	if (!down_trylock(&bdev->bd_part_sem)) {
+		if (!bdev->bd_part_count)
+			return 0;
+		up(&bdev->bd_part_sem);
+	}
+	bdput(bdev);
+	return -EBUSY;
+}
+
+static inline void dev_unlock_part(kdev_t dev)
+{
+	struct block_device *bdev = bdget(kdev_t_to_nr(dev));
+	if (!bdev)
+		BUG();
+	up(&bdev->bd_part_sem);
+	bdput(bdev);
+	bdput(bdev);
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 44a954b2c370..93755fee7f36 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -90,8 +90,10 @@ struct gendisk {
 extern void add_gendisk(struct gendisk *gp);
 extern void del_gendisk(struct gendisk *gp);
 extern struct gendisk *get_gendisk(kdev_t dev);
-extern unsigned long get_start_sect(kdev_t dev);
-extern unsigned long get_nr_sects(kdev_t dev);
+static inline unsigned long get_start_sect(struct block_device *bdev)
+{
+	return bdev->bd_offset;
+}
 
 #endif  /*  __KERNEL__  */
 
diff --git a/include/linux/hfs_fs_i.h b/include/linux/hfs_fs_i.h
index 39312c9b8fad..119cc5200197 100644
--- a/include/linux/hfs_fs_i.h
+++ b/include/linux/hfs_fs_i.h
@@ -19,7 +19,7 @@
 struct hfs_inode_info {
 	int				magic;     /* A magic number */
 
-	unsigned long			mmu_private;
+	loff_t				mmu_private;
 	struct hfs_cat_entry		*entry;
 
 	/* For a regular or header file */
diff --git a/include/linux/hpfs_fs_i.h b/include/linux/hpfs_fs_i.h
index c4d6cce5d607..ab72ea5b5248 100644
--- a/include/linux/hpfs_fs_i.h
+++ b/include/linux/hpfs_fs_i.h
@@ -2,7 +2,7 @@
 #define _HPFS_FS_I
 
 struct hpfs_inode_info {
-	unsigned long mmu_private;
+	loff_t mmu_private;
 	ino_t i_parent_dir;	/* (directories) gives fnode of parent dir */
 	unsigned i_dno;		/* (directories) root dnode */
 	unsigned i_dpos;	/* (directories) temp for readdir */
diff --git a/include/linux/irq_cpustat.h b/include/linux/irq_cpustat.h
index dfd73c5ec60d..6eab29be1d61 100644
--- a/include/linux/irq_cpustat.h
+++ b/include/linux/irq_cpustat.h
@@ -29,8 +29,6 @@ extern irq_cpustat_t irq_stat[];			/* defined in asm/hardirq.h */
 
   /* arch independent irq_stat fields */
 #define softirq_pending(cpu)	__IRQ_STAT((cpu), __softirq_pending)
-#define local_irq_count(cpu)	__IRQ_STAT((cpu), __local_irq_count)
-#define local_bh_count(cpu)	__IRQ_STAT((cpu), __local_bh_count)
 #define syscall_count(cpu)	__IRQ_STAT((cpu), __syscall_count)
 #define ksoftirqd_task(cpu)	__IRQ_STAT((cpu), __ksoftirqd_task)
   /* arch dependent irq_stat fields */
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index de592f2ba451..75533ee86b73 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -26,6 +26,11 @@ struct kernel_stat {
 	unsigned int dk_drive_wblk[DK_MAX_MAJOR][DK_MAX_DISK];
 	unsigned int pgpgin, pgpgout;
 	unsigned int pswpin, pswpout;
+	unsigned int pgalloc, pgfree;
+	unsigned int pgactivate, pgdeactivate;
+	unsigned int pgfault, pgmajfault;
+	unsigned int pgscan, pgsteal;
+	unsigned int pageoutrun, allocstall;
 #if !defined(CONFIG_ARCH_S390)
 	unsigned int irqs[NR_CPUS][NR_IRQS];
 #endif
@@ -35,6 +40,13 @@ extern struct kernel_stat kstat;
 
 extern unsigned long nr_context_switches(void);
 
+/*
+ * Maybe we need to smp-ify kernel_stat some day. It would be nice to do
+ * that without having to modify all the code that increments the stats.
+ */
+#define KERNEL_STAT_INC(x) kstat.x++
+#define KERNEL_STAT_ADD(x, y) kstat.x += y
+
 #if !defined(CONFIG_ARCH_S390)
 /*
  * Number of interrupts per specific IRQ source, since bootup
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 163e19fd7b33..685868b9e0e4 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -130,6 +130,9 @@ struct vm_operations_struct {
 	struct page * (*nopage)(struct vm_area_struct * area, unsigned long address, int unused);
 };
 
+/* forward declaration; pte_chain is meant to be internal to rmap.c */
+struct pte_chain;
+
 /*
  * Each physical page in the system has a struct page associated with
  * it to keep track of whatever it is we are using the page for at the
@@ -154,6 +157,11 @@ struct page {
 					   updated asynchronously */
 	struct list_head lru;		/* Pageout list, eg. active_list;
 					   protected by pagemap_lru_lock !! */
+	union {
+		struct pte_chain * chain;	/* Reverse pte mapping pointer.
+					 * protected by PG_chainlock */
+		pte_t		 * direct;
+	} pte;
 	unsigned long private;		/* mapping-private opaque data */
 
 	/*
@@ -453,17 +461,16 @@ extern int filemap_sync(struct vm_area_struct *, unsigned long,	size_t, unsigned
 extern struct page *filemap_nopage(struct vm_area_struct *, unsigned long, int);
 
 /* mm/page-writeback.c */
-int generic_writepages(struct address_space *mapping, int *nr_to_write);
 int write_one_page(struct page *page, int wait);
 
 /* readahead.c */
 #define VM_MAX_READAHEAD	128	/* kbytes */
 #define VM_MIN_READAHEAD	16	/* kbytes (includes current page) */
-void do_page_cache_readahead(struct file *file,
+int do_page_cache_readahead(struct file *file,
 			unsigned long offset, unsigned long nr_to_read);
 void page_cache_readahead(struct file *file, unsigned long offset);
 void page_cache_readaround(struct file *file, unsigned long offset);
-void handle_ra_thrashing(struct file *file);
+void handle_ra_miss(struct file *file);
 
 /* vma is the first one with  address < vma->vm_end,
  * and even  address < vma->vm_start. Have to extend vma. */
diff --git a/include/linux/mpage.h b/include/linux/mpage.h
index 929fca427465..52253d90f55d 100644
--- a/include/linux/mpage.h
+++ b/include/linux/mpage.h
@@ -16,3 +16,8 @@ int mpage_readpage(struct page *page, get_block_t get_block);
 int mpage_writepages(struct address_space *mapping,
 		int *nr_to_write, get_block_t get_block);
 
+static inline int
+generic_writepages(struct address_space *mapping, int *nr_to_write)
+{
+	return mpage_writepages(mapping, nr_to_write, NULL);
+}
diff --git a/include/linux/msdos_fs_i.h b/include/linux/msdos_fs_i.h
index 438afd880ccc..85f649402617 100644
--- a/include/linux/msdos_fs_i.h
+++ b/include/linux/msdos_fs_i.h
@@ -8,7 +8,7 @@
  */
 
 struct msdos_inode_info {
-	unsigned long mmu_private;
+	loff_t mmu_private;
 	int i_start;	/* first cluster or 0 */
 	int i_logstart;	/* logical first cluster */
 	int i_attrs;	/* unused attribute bits */
diff --git a/include/linux/msg.h b/include/linux/msg.h
index 4dfca8d4952c..4b64aebf312e 100644
--- a/include/linux/msg.h
+++ b/include/linux/msg.h
@@ -63,6 +63,35 @@ struct msginfo {
 
 #ifdef __KERNEL__
 
+/* one msg_msg structure for each message */
+struct msg_msg {
+	struct list_head m_list; 
+	long  m_type;          
+	int m_ts;           /* message text size */
+	struct msg_msgseg* next;
+	/* the actual message follows immediately */
+};
+
+#define DATALEN_MSG	(PAGE_SIZE-sizeof(struct msg_msg))
+#define DATALEN_SEG	(PAGE_SIZE-sizeof(struct msg_msgseg))
+
+/* one msq_queue structure for each present queue on the system */
+struct msg_queue {
+	struct kern_ipc_perm q_perm;
+	time_t q_stime;			/* last msgsnd time */
+	time_t q_rtime;			/* last msgrcv time */
+	time_t q_ctime;			/* last change time */
+	unsigned long q_cbytes;		/* current number of bytes on queue */
+	unsigned long q_qnum;		/* number of messages in queue */
+	unsigned long q_qbytes;		/* max number of bytes on queue */
+	pid_t q_lspid;			/* pid of last msgsnd */
+	pid_t q_lrpid;			/* last receive pid */
+
+	struct list_head q_messages;
+	struct list_head q_receivers;
+	struct list_head q_senders;
+};
+
 asmlinkage long sys_msgget (key_t key, int msgflg);
 asmlinkage long sys_msgsnd (int msqid, struct msgbuf *msgp, size_t msgsz, int msgflg);
 asmlinkage long sys_msgrcv (int msqid, struct msgbuf *msgp, size_t msgsz, long msgtyp, int msgflg);
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 93a6f27cb454..f272b7d7f465 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -47,7 +47,7 @@
  * locked- and dirty-page accounting.  The top eight bits of page->flags are
  * used for page->zone, so putting flag bits there doesn't work.
  */
-#define PG_locked	 0	/* Page is locked. Don't touch. */
+#define PG_locked	 	 0	/* Page is locked. Don't touch. */
 #define PG_error		 1
 #define PG_referenced		 2
 #define PG_uptodate		 3
@@ -64,7 +64,10 @@
 
 #define PG_private		12	/* Has something at ->private */
 #define PG_writeback		13	/* Page is under writeback */
-#define PG_nosave		15	/* Used for system suspend/resume */
+#define PG_nosave		14	/* Used for system suspend/resume */
+#define PG_chainlock		15	/* lock bit for ->pte_chain */
+
+#define PG_direct		16	/* ->pte_chain points directly at pte */
 
 /*
  * Global page accounting.  One instance per CPU.
@@ -75,6 +78,9 @@ extern struct page_state {
 	unsigned long nr_pagecache;
 	unsigned long nr_active;	/* on active_list LRU */
 	unsigned long nr_inactive;	/* on inactive_list LRU */
+	unsigned long nr_page_table_pages;
+	unsigned long nr_pte_chain_pages;
+	unsigned long used_pte_chains_bytes;
 } ____cacheline_aligned_in_smp page_states[NR_CPUS];
 
 extern void get_page_state(struct page_state *ret);
@@ -216,6 +222,37 @@ extern void get_page_state(struct page_state *ret);
 #define ClearPageNosave(page)		clear_bit(PG_nosave, &(page)->flags)
 #define TestClearPageNosave(page)	test_and_clear_bit(PG_nosave, &(page)->flags)
 
+#define PageDirect(page)	test_bit(PG_direct, &(page)->flags)
+#define SetPageDirect(page)	set_bit(PG_direct, &(page)->flags)
+#define TestSetPageDirect(page)	test_and_set_bit(PG_direct, &(page)->flags)
+#define ClearPageDirect(page)		clear_bit(PG_direct, &(page)->flags)
+#define TestClearPageDirect(page)	test_and_clear_bit(PG_direct, &(page)->flags)
+
+/*
+ * inlines for acquisition and release of PG_chainlock
+ */
+static inline void pte_chain_lock(struct page *page)
+{
+	/*
+	 * Assuming the lock is uncontended, this never enters
+	 * the body of the outer loop. If it is contended, then
+	 * within the inner loop a non-atomic test is used to
+	 * busywait with less bus contention for a good time to
+	 * attempt to acquire the lock bit.
+	 */
+	preempt_disable();
+	while (test_and_set_bit(PG_chainlock, &page->flags)) {
+		while (test_bit(PG_chainlock, &page->flags))
+			cpu_relax();
+	}
+}
+
+static inline void pte_chain_unlock(struct page *page)
+{
+	clear_bit(PG_chainlock, &page->flags);
+	preempt_enable();
+}
+
 /*
  * The PageSwapCache predicate doesn't use a PG_flag at this time,
  * but it may again do so one day.
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index a3d37ab267ae..6c4ee12fb7ec 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -52,8 +52,6 @@ extern struct page * read_cache_page(struct address_space *mapping,
 
 extern int add_to_page_cache(struct page *page,
 		struct address_space *mapping, unsigned long index);
-extern int add_to_page_cache_unique(struct page *page,
-		struct address_space *mapping, unsigned long index);
 
 static inline void ___add_to_page_cache(struct page *page,
 		struct address_space *mapping, unsigned long index)
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
new file mode 100644
index 000000000000..172471f0dbde
--- /dev/null
+++ b/include/linux/preempt.h
@@ -0,0 +1,46 @@
+#ifndef __LINUX_PREEMPT_H
+#define __LINUX_PREEMPT_H
+
+#include <linux/config.h>
+
+#define preempt_count() (current_thread_info()->preempt_count)
+
+#ifdef CONFIG_PREEMPT
+
+extern void preempt_schedule(void);
+
+#define preempt_disable() \
+do { \
+	preempt_count()++; \
+	barrier(); \
+} while (0)
+
+#define preempt_enable_no_resched() \
+do { \
+	preempt_count()--; \
+	barrier(); \
+} while (0)
+
+#define preempt_enable() \
+do { \
+	preempt_enable_no_resched(); \
+	if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
+		preempt_schedule(); \
+} while (0)
+
+#define preempt_check_resched() \
+do { \
+	if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
+		preempt_schedule(); \
+} while (0)
+
+#else
+
+#define preempt_disable()		do { } while (0)
+#define preempt_enable_no_resched()	do {} while(0)
+#define preempt_enable()		do { } while (0)
+#define preempt_check_resched()		do { } while (0)
+
+#endif
+
+#endif /* __LINUX_PREEMPT_H */
diff --git a/include/linux/qnx4_fs.h b/include/linux/qnx4_fs.h
index 06e0e6b51e4c..a84aa2091c2b 100644
--- a/include/linux/qnx4_fs.h
+++ b/include/linux/qnx4_fs.h
@@ -106,7 +106,7 @@ struct qnx4_sb_info {
 
 struct qnx4_inode_info {
 	struct qnx4_inode_entry raw;
-	unsigned long mmu_private;
+	loff_t mmu_private;
 	struct inode vfs_inode;
 };
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 2e38ae05d9d2..1d288587e44d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -354,6 +354,8 @@ struct task_struct {
 	void *notifier_data;
 	sigset_t *notifier_mask;
 	
+	void *security;
+
 /* Thread group tracking */
    	u32 parent_exec_id;
    	u32 self_exec_id;
@@ -587,10 +589,9 @@ extern int request_irq(unsigned int,
 		       unsigned long, const char *, void *);
 extern void free_irq(unsigned int, void *);
 
-/*
- * capable() checks for a particular capability.
- * See include/linux/capability.h for defined capabilities.
- */
+/* capable prototype and code moved to security.[hc] */
+#include <linux/security.h>
+#if 0
 static inline int capable(int cap)
 {
 	if (cap_raised(current->cap_effective, cap)) {
@@ -599,6 +600,7 @@ static inline int capable(int cap)
 	}
 	return 0;
 }
+#endif	/* if 0 */
 
 /*
  * Routines for handling mm_structs
diff --git a/include/linux/security.h b/include/linux/security.h
new file mode 100644
index 000000000000..3063323bd1fb
--- /dev/null
+++ b/include/linux/security.h
@@ -0,0 +1,383 @@
+/*
+ * Linux Security plug
+ *
+ * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
+ * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
+ * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
+ * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	Due to this file being licensed under the GPL there is controversy over
+ *	whether this permits you to write a module that #includes this file
+ *	without placing your module under the GPL.  Please consult a lawyer for
+ *	advice before doing this.
+ *
+ */
+
+#ifndef __LINUX_SECURITY_H
+#define __LINUX_SECURITY_H
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/binfmts.h>
+#include <linux/signal.h>
+#include <linux/resource.h>
+#include <linux/sem.h>
+#include <linux/sysctl.h>
+#include <linux/shm.h>
+#include <linux/msg.h>
+
+/*
+ * Values used in the task_security_ops calls
+ */
+/* setuid or setgid, id0 == uid or gid */
+#define LSM_SETID_ID	1
+
+/* setreuid or setregid, id0 == real, id1 == eff */
+#define LSM_SETID_RE	2
+
+/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
+#define LSM_SETID_RES	4
+
+/* setfsuid or setfsgid, id0 == fsuid or fsgid */
+#define LSM_SETID_FS	8
+
+/* forward declares to avoid warnings */
+struct sk_buff;
+struct net_device;
+struct nfsctl_arg;
+struct sched_param;
+struct swap_info_struct;
+
+/**
+ * struct security_operations - main security structure
+ *
+ * Security hooks for program execution operations.
+ *
+ * @bprm_alloc_security:
+ *	Allocate and attach a security structure to the @bprm->security field.
+ *	The security field is initialized to NULL when the bprm structure is
+ *	allocated.
+ *	@bprm contains the linux_binprm structure to be modified.
+ *	Return 0 if operation was successful.
+ * @bprm_free_security:
+ *	@bprm contains the linux_binprm structure to be modified.
+ *	Deallocate and clear the @bprm->security field.
+ * @bprm_compute_creds:
+ *	Compute and set the security attributes of a process being transformed
+ *	by an execve operation based on the old attributes (current->security)
+ *	and the information saved in @bprm->security by the set_security hook.
+ *	Since this hook function (and its caller) are void, this hook can not
+ *	return an error.  However, it can leave the security attributes of the
+ *	process unchanged if an access failure occurs at this point. It can
+ *	also perform other state changes on the process (e.g.  closing open
+ *	file descriptors to which access is no longer granted if the attributes
+ *	were changed). 
+ *	@bprm contains the linux_binprm structure.
+ * @bprm_set_security:
+ *	Save security information in the bprm->security field, typically based
+ *	on information about the bprm->file, for later use by the compute_creds
+ *	hook.  This hook may also optionally check permissions (e.g. for
+ *	transitions between security domains).
+ *	This hook may be called multiple times during a single execve, e.g. for
+ *	interpreters.  The hook can tell whether it has already been called by
+ *	checking to see if @bprm->security is non-NULL.  If so, then the hook
+ *	may decide either to retain the security information saved earlier or
+ *	to replace it.
+ *	@bprm contains the linux_binprm structure.
+ *	Return 0 if the hook is successful and permission is granted.
+ * @bprm_check_security:
+ * 	This hook mediates the point when a search for a binary handler	will
+ * 	begin.  It allows a check the @bprm->security value which is set in
+ * 	the preceding set_security call.  The primary difference from
+ * 	set_security is that the argv list and envp list are reliably
+ * 	available in @bprm.  This hook may be called multiple times
+ * 	during a single execve; and in each pass set_security is called
+ * 	first.
+ * 	@bprm contains the linux_binprm structure.
+ *	Return 0 if the hook is successful and permission is granted.
+ *
+ * Security hooks for task operations.
+ *
+ * @task_create:
+ *	Check permission before creating a child process.  See the clone(2)
+ *	manual page for definitions of the @clone_flags.
+ *	@clone_flags contains the flags indicating what should be shared.
+ *	Return 0 if permission is granted.
+ * @task_alloc_security:
+ *	@p contains the task_struct for child process.
+ *	Allocate and attach a security structure to the p->security field. The
+ *	security field is initialized to NULL when the task structure is
+ *	allocated.
+ *	Return 0 if operation was successful.
+ * @task_free_security:
+ *	@p contains the task_struct for process.
+ *	Deallocate and clear the p->security field.
+ * @task_setuid:
+ *	Check permission before setting one or more of the user identity
+ *	attributes of the current process.  The @flags parameter indicates
+ *	which of the set*uid system calls invoked this hook and how to
+ *	interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
+ *	definitions at the beginning of this file for the @flags values and
+ *	their meanings.
+ *	@id0 contains a uid.
+ *	@id1 contains a uid.
+ *	@id2 contains a uid.
+ *	@flags contains one of the LSM_SETID_* values.
+ *	Return 0 if permission is granted.
+ * @task_post_setuid:
+ *	Update the module's state after setting one or more of the user
+ *	identity attributes of the current process.  The @flags parameter
+ *	indicates which of the set*uid system calls invoked this hook.  If
+ *	@flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
+ *	parameters are not used.
+ *	@old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
+ *	@old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
+ *	@old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
+ *	@flags contains one of the LSM_SETID_* values.
+ *	Return 0 on success.
+ * @task_setgid:
+ *	Check permission before setting one or more of the group identity
+ *	attributes of the current process.  The @flags parameter indicates
+ *	which of the set*gid system calls invoked this hook and how to
+ *	interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
+ *	definitions at the beginning of this file for the @flags values and
+ *	their meanings.
+ *	@id0 contains a gid.
+ *	@id1 contains a gid.
+ *	@id2 contains a gid.
+ *	@flags contains one of the LSM_SETID_* values.
+ *	Return 0 if permission is granted.
+ * @task_setpgid:
+ *	Check permission before setting the process group identifier of the
+ *	process @p to @pgid.
+ *	@p contains the task_struct for process being modified.
+ *	@pgid contains the new pgid.
+ *	Return 0 if permission is granted.
+ * @task_getpgid:
+ *	Check permission before getting the process group identifier of the
+ *	process @p.
+ *	@p contains the task_struct for the process.
+ *	Return 0 if permission is granted.
+ * @task_getsid:
+ *	Check permission before getting the session identifier of the process
+ *	@p.
+ *	@p contains the task_struct for the process.
+ *	Return 0 if permission is granted.
+ * @task_setgroups:
+ *	Check permission before setting the supplementary group set of the
+ *	current process to @grouplist.
+ *	@gidsetsize contains the number of elements in @grouplist.
+ *	@grouplist contains the array of gids.
+ *	Return 0 if permission is granted.
+ * @task_setnice:
+ *	Check permission before setting the nice value of @p to @nice.
+ *	@p contains the task_struct of process.
+ *	@nice contains the new nice value.
+ *	Return 0 if permission is granted.
+ * @task_setrlimit:
+ *	Check permission before setting the resource limits of the current
+ *	process for @resource to @new_rlim.  The old resource limit values can
+ *	be examined by dereferencing (current->rlim + resource).
+ *	@resource contains the resource whose limit is being set.
+ *	@new_rlim contains the new limits for @resource.
+ *	Return 0 if permission is granted.
+ * @task_setscheduler:
+ *	Check permission before setting scheduling policy and/or parameters of
+ *	process @p based on @policy and @lp.
+ *	@p contains the task_struct for process.
+ *	@policy contains the scheduling policy.
+ *	@lp contains the scheduling parameters.
+ *	Return 0 if permission is granted.
+ * @task_getscheduler:
+ *	Check permission before obtaining scheduling information for process
+ *	@p.
+ *	@p contains the task_struct for process.
+ *	Return 0 if permission is granted.
+ * @task_kill:
+ *	Check permission before sending signal @sig to @p.  @info can be NULL,
+ *	the constant 1, or a pointer to a siginfo structure.  If @info is 1 or
+ *	SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
+ *	from the kernel and should typically be permitted.
+ *	SIGIO signals are handled separately by the send_sigiotask hook in
+ *	file_security_ops.
+ *	@p contains the task_struct for process.
+ *	@info contains the signal information.
+ *	@sig contains the signal value.
+ *	Return 0 if permission is granted.
+ * @task_wait:
+ *	Check permission before allowing a process to reap a child process @p
+ *	and collect its status information.
+ *	@p contains the task_struct for process.
+ *	Return 0 if permission is granted.
+ * @task_prctl:
+ *	Check permission before performing a process control operation on the
+ *	current process.
+ *	@option contains the operation.
+ *	@arg2 contains a argument.
+ *	@arg3 contains a argument.
+ *	@arg4 contains a argument.
+ *	@arg5 contains a argument.
+ *	Return 0 if permission is granted.
+ * @task_kmod_set_label:
+ *	Set the security attributes in current->security for the kernel module
+ *	loader thread, so that it has the permissions needed to perform its
+ *	function.
+ * @task_reparent_to_init:
+ * 	Set the security attributes in @p->security for a kernel thread that
+ * 	is being reparented to the init task.
+ *	@p contains the task_struct for the kernel thread.
+ *
+ * @ptrace:
+ *	Check permission before allowing the @parent process to trace the
+ *	@child process.
+ *	Security modules may also want to perform a process tracing check
+ *	during an execve in the set_security or compute_creds hooks of
+ *	binprm_security_ops if the process is being traced and its security
+ *	attributes would be changed by the execve.
+ *	@parent contains the task_struct structure for parent process.
+ *	@child contains the task_struct structure for child process.
+ *	Return 0 if permission is granted.
+ * @capget:
+ *	Get the @effective, @inheritable, and @permitted capability sets for
+ *	the @target process.  The hook may also perform permission checking to
+ *	determine if the current process is allowed to see the capability sets
+ *	of the @target process.
+ *	@target contains the task_struct structure for target process.
+ *	@effective contains the effective capability set.
+ *	@inheritable contains the inheritable capability set.
+ *	@permitted contains the permitted capability set.
+ *	Return 0 if the capability sets were successfully obtained.
+ * @capset_check:
+ *	Check permission before setting the @effective, @inheritable, and
+ *	@permitted capability sets for the @target process.
+ *	Caveat:  @target is also set to current if a set of processes is
+ *	specified (i.e. all processes other than current and init or a
+ *	particular process group).  Hence, the capset_set hook may need to
+ *	revalidate permission to the actual target process.
+ *	@target contains the task_struct structure for target process.
+ *	@effective contains the effective capability set.
+ *	@inheritable contains the inheritable capability set.
+ *	@permitted contains the permitted capability set.
+ *	Return 0 if permission is granted.
+ * @capset_set:
+ *	Set the @effective, @inheritable, and @permitted capability sets for
+ *	the @target process.  Since capset_check cannot always check permission
+ *	to the real @target process, this hook may also perform permission
+ *	checking to determine if the current process is allowed to set the
+ *	capability sets of the @target process.  However, this hook has no way
+ *	of returning an error due to the structure of the sys_capset code.
+ *	@target contains the task_struct structure for target process.
+ *	@effective contains the effective capability set.
+ *	@inheritable contains the inheritable capability set.
+ *	@permitted contains the permitted capability set.
+ * @capable:
+ *	Check whether the @tsk process has the @cap capability.
+ *	@tsk contains the task_struct for the process.
+ *	@cap contains the capability <include/linux/capability.h>.
+ *	Return 0 if the capability is granted for @tsk.
+ * @sys_security:
+ *	Security modules may use this hook to implement new system calls for
+ *	security-aware applications.  The interface is similar to socketcall,
+ *	but with an @id parameter to help identify the security module whose
+ *	call is being invoked.  The module is responsible for interpreting the
+ *	parameters, and must copy in the @args array from user space if it is
+ *	used.
+ *	The recommended convention for creating the hexadecimal @id value is
+ *	echo "Name_of_module" | md5sum | cut -c -8; by using this convention,
+ *	there is no need for a central registry.
+ *	@id contains the security module identifier.
+ *	@call contains the call value.
+ *	@args contains the call arguments (user space pointer).
+ *	The module should return -ENOSYS if it does not implement any new
+ *	system calls.
+ *
+ * @register_security:
+ * 	allow module stacking.
+ * 	@name contains the name of the security module being stacked.
+ * 	@ops contains a pointer to the struct security_operations of the module to stack.
+ * @unregister_security:
+ *	remove a stacked module.
+ *	@name contains the name of the security module being unstacked.
+ *	@ops contains a pointer to the struct security_operations of the module to unstack.
+ * 
+ * This is the main security structure.
+ */
+struct security_operations {
+	int (*ptrace) (struct task_struct * parent, struct task_struct * child);
+	int (*capget) (struct task_struct * target,
+		       kernel_cap_t * effective,
+		       kernel_cap_t * inheritable, kernel_cap_t * permitted);
+	int (*capset_check) (struct task_struct * target,
+			     kernel_cap_t * effective,
+			     kernel_cap_t * inheritable,
+			     kernel_cap_t * permitted);
+	void (*capset_set) (struct task_struct * target,
+			    kernel_cap_t * effective,
+			    kernel_cap_t * inheritable,
+			    kernel_cap_t * permitted);
+	int (*capable) (struct task_struct * tsk, int cap);
+	int (*sys_security) (unsigned int id, unsigned call,
+			     unsigned long *args);
+
+	int (*bprm_alloc_security) (struct linux_binprm * bprm);
+	void (*bprm_free_security) (struct linux_binprm * bprm);
+	void (*bprm_compute_creds) (struct linux_binprm * bprm);
+	int (*bprm_set_security) (struct linux_binprm * bprm);
+	int (*bprm_check_security) (struct linux_binprm * bprm);
+
+	int (*task_create) (unsigned long clone_flags);
+	int (*task_alloc_security) (struct task_struct * p);
+	void (*task_free_security) (struct task_struct * p);
+	int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
+	int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
+				 uid_t old_euid, uid_t old_suid, int flags);
+	int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
+	int (*task_setpgid) (struct task_struct * p, pid_t pgid);
+	int (*task_getpgid) (struct task_struct * p);
+	int (*task_getsid) (struct task_struct * p);
+	int (*task_setgroups) (int gidsetsize, gid_t * grouplist);
+	int (*task_setnice) (struct task_struct * p, int nice);
+	int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
+	int (*task_setscheduler) (struct task_struct * p, int policy,
+				  struct sched_param * lp);
+	int (*task_getscheduler) (struct task_struct * p);
+	int (*task_kill) (struct task_struct * p,
+			  struct siginfo * info, int sig);
+	int (*task_wait) (struct task_struct * p);
+	int (*task_prctl) (int option, unsigned long arg2,
+			   unsigned long arg3, unsigned long arg4,
+			   unsigned long arg5);
+	void (*task_kmod_set_label) (void);
+	void (*task_reparent_to_init) (struct task_struct * p);
+
+	/* allow module stacking */
+	int (*register_security) (const char *name,
+	                          struct security_operations *ops);
+	int (*unregister_security) (const char *name,
+	                            struct security_operations *ops);
+};
+
+
+/* prototypes */
+extern int security_scaffolding_startup	(void);
+extern int register_security	(struct security_operations *ops);
+extern int unregister_security	(struct security_operations *ops);
+extern int mod_reg_security	(const char *name, struct security_operations *ops);
+extern int mod_unreg_security	(const char *name, struct security_operations *ops);
+extern int capable		(int cap);
+
+/* global variables */
+extern struct security_operations *security_ops;
+
+
+#endif /* __KERNEL__ */
+
+#endif /* ! __LINUX_SECURITY_H */
+
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
new file mode 100644
index 000000000000..19ab829b67e3
--- /dev/null
+++ b/include/linux/serial_core.h
@@ -0,0 +1,395 @@
+/*
+ *  linux/drivers/char/serial_core.h
+ *
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  $Id: serial_core.h,v 1.49 2002/07/20 18:06:32 rmk Exp $
+ */
+
+/*
+ * The type definitions.  These are from Ted Ts'o's serial.h
+ */
+#define PORT_UNKNOWN	0
+#define PORT_8250	1
+#define PORT_16450	2
+#define PORT_16550	3
+#define PORT_16550A	4
+#define PORT_CIRRUS	5
+#define PORT_16650	6
+#define PORT_16650V2	7
+#define PORT_16750	8
+#define PORT_STARTECH	9
+#define PORT_16C950	10
+#define PORT_16654	11
+#define PORT_16850	12
+#define PORT_RSA	13
+#define PORT_MAX_8250	13	/* max port ID */
+
+/*
+ * ARM specific type numbers.  These are not currently guaranteed
+ * to be implemented, and will change in the future.  These are
+ * separate so any additions to the old serial.c that occur before
+ * we are merged can be easily merged here.
+ */
+#define PORT_AMBA	32
+#define PORT_CLPS711X	33
+#define PORT_SA1100	34
+#define PORT_UART00	35
+#define PORT_21285	37
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <linux/interrupt.h>
+#include <linux/circ_buf.h>
+#include <linux/spinlock.h>
+
+struct uart_port;
+struct uart_info;
+struct serial_struct;
+
+/*
+ * This structure describes all the operations that can be
+ * done on the physical hardware.
+ */
+struct uart_ops {
+	unsigned int	(*tx_empty)(struct uart_port *);
+	void		(*set_mctrl)(struct uart_port *, unsigned int mctrl);
+	unsigned int	(*get_mctrl)(struct uart_port *);
+	void		(*stop_tx)(struct uart_port *, unsigned int tty_stop);
+	void		(*start_tx)(struct uart_port *, unsigned int tty_start);
+	void		(*send_xchar)(struct uart_port *, char ch);
+	void		(*stop_rx)(struct uart_port *);
+	void		(*enable_ms)(struct uart_port *);
+	void		(*break_ctl)(struct uart_port *, int ctl);
+	int		(*startup)(struct uart_port *);
+	void		(*shutdown)(struct uart_port *);
+	void		(*change_speed)(struct uart_port *, unsigned int cflag,
+				        unsigned int iflag, unsigned int quot);
+	void		(*pm)(struct uart_port *, unsigned int state,
+			      unsigned int oldstate);
+	int		(*set_wake)(struct uart_port *, unsigned int state);
+
+	/*
+	 * Return a string describing the type of the port
+	 */
+	const char *(*type)(struct uart_port *);
+
+	/*
+	 * Release IO and memory resources used by the port.
+	 * This includes iounmap if necessary.
+	 */
+	void		(*release_port)(struct uart_port *);
+
+	/*
+	 * Request IO and memory resources used by the port.
+	 * This includes iomapping the port if necessary.
+	 */
+	int		(*request_port)(struct uart_port *);
+	void		(*config_port)(struct uart_port *, int);
+	int		(*verify_port)(struct uart_port *, struct serial_struct *);
+	int		(*ioctl)(struct uart_port *, unsigned int, unsigned long);
+};
+
+#define UART_CONFIG_TYPE	(1 << 0)
+#define UART_CONFIG_IRQ		(1 << 1)
+
+struct uart_icount {
+	__u32	cts;
+	__u32	dsr;
+	__u32	rng;
+	__u32	dcd;
+	__u32	rx;
+	__u32	tx;
+	__u32	frame;
+	__u32	overrun;
+	__u32	parity;
+	__u32	brk;
+	__u32	buf_overrun;
+};
+
+struct uart_port {
+	spinlock_t		lock;			/* port lock */
+	unsigned int		iobase;			/* in/out[bwl] */
+	char			*membase;		/* read/write[bwl] */
+	unsigned int		irq;			/* irq number */
+	unsigned int		uartclk;		/* base uart clock */
+	unsigned char		fifosize;		/* tx fifo size */
+	unsigned char		x_char;			/* xon/xoff char */
+	unsigned char		regshift;		/* reg offset shift */
+	unsigned char		iotype;			/* io access style */
+
+#define UPIO_PORT		(0)
+#define UPIO_HUB6		(1)
+#define UPIO_MEM		(2)
+
+	unsigned int		read_status_mask;	/* driver specific */
+	unsigned int		ignore_status_mask;	/* driver specific */
+	struct uart_info	*info;			/* pointer to parent info */
+	struct uart_icount	icount;			/* statistics */
+
+	struct console		*cons;			/* struct console, if any */
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+	unsigned long		sysrq;			/* sysrq timeout */
+#endif
+
+	unsigned int		flags;
+
+#define UPF_HUP_NOTIFY		(1 << 0)
+#define UPF_SAK			(1 << 2)
+#define UPF_SPD_MASK		(0x1030)
+#define UPF_SPD_HI		(0x0010)
+#define UPF_SPD_VHI		(0x0020)
+#define UPF_SPD_CUST		(0x0030)
+#define UPF_SPD_SHI		(0x1000)
+#define UPF_SPD_WARP		(0x1010)
+#define UPF_SKIP_TEST		(1 << 6)
+#define UPF_AUTO_IRQ		(1 << 7)
+#define UPF_HARDPPS_CD		(1 << 11)
+#define UPF_LOW_LATENCY		(1 << 13)
+#define UPF_BUGGY_UART		(1 << 14)
+#define UPF_AUTOPROBE		(1 << 15)
+#define UPF_BOOT_AUTOCONF	(1 << 28)
+
+#define UPF_FLAGS		(0x7fff)
+#define UPF_USR_MASK		(UPF_SPD_MASK|UPF_LOW_LATENCY)
+
+	unsigned int		mctrl;			/* current modem ctrl settings */
+	unsigned int		timeout;		/* character-based timeout */
+	unsigned int		type;			/* port type */
+	struct uart_ops		*ops;
+	unsigned int		line;			/* port index */
+	unsigned long		mapbase;		/* for ioremap */
+	unsigned char		hub6;			/* this should be in the 8250 driver */
+	unsigned char		unused[3];
+};
+
+/*
+ * This is the state information which is persistent across opens.
+ * The low level driver must not to touch any elements contained
+ * within.
+ */
+struct uart_state {
+	unsigned int		close_delay;
+	unsigned int		closing_wait;
+
+#define USF_CLOSING_WAIT_INF	(0)
+#define USF_CLOSING_WAIT_NONE	(65535)
+
+	unsigned int		custom_divisor;
+
+	int			count;
+	struct uart_info	*info;
+	struct uart_port	*port;
+
+#ifdef CONFIG_PM
+	struct pm_dev		*pm;
+#endif
+};
+
+#define UART_XMIT_SIZE 1024
+/*
+ * This is the state information which is only valid when the port
+ * is open; it may be freed by the core driver once the device has
+ * been closed.  Either the low level driver or the core can modify
+ * stuff here.
+ */
+struct uart_info {
+	struct uart_port	*port;
+	struct uart_state	*state;
+	struct tty_struct	*tty;
+	struct circ_buf		xmit;
+	unsigned int		flags;
+
+/*
+ * These are the flags that specific to info->flags, and reflect our
+ * internal state.  They can not be accessed via port->flags.  Low
+ * level drivers must not change these, but may query them instead.
+ */
+#define UIF_CHECK_CD		(1 << 25)
+#define UIF_CTS_FLOW		(1 << 26)
+#define UIF_CLOSING		(1 << 27)
+#define UIF_NORMAL_ACTIVE	(1 << 29)
+#define UIF_INITIALIZED		(1 << 31)
+
+	unsigned char		*tmpbuf;
+	struct semaphore	tmpbuf_sem;
+
+	unsigned long		event;
+	int			blocked_open;
+
+	struct tasklet_struct	tlet;
+
+	wait_queue_head_t	open_wait;
+	wait_queue_head_t	delta_msr_wait;
+};
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS		256
+
+#define EVT_WRITE_WAKEUP	0
+
+struct module;
+struct tty_driver;
+
+struct uart_driver {
+	struct module		*owner;
+	const char		*driver_name;
+	const char		*dev_name;
+	int			 major;
+	int			 minor;
+	int			 nr;
+	struct console		*cons;
+
+	/*
+	 * these are private; the low level driver should not
+	 * touch these; they should be initialised to NULL
+	 */
+	struct uart_state	*state;
+	struct tty_driver	*tty_driver;
+};
+
+void uart_event(struct uart_port *port, int event);
+struct uart_port *uart_get_console(struct uart_port *ports, int nr,
+				   struct console *c);
+void uart_parse_options(char *options, int *baud, int *parity, int *bits,
+			int *flow);
+int uart_set_options(struct uart_port *port, struct console *co, int baud,
+		     int parity, int bits, int flow);
+int uart_register_driver(struct uart_driver *uart);
+void uart_unregister_driver(struct uart_driver *uart);
+void uart_unregister_port(struct uart_driver *reg, int line);
+int uart_register_port(struct uart_driver *reg, struct uart_port *port);
+int uart_add_one_port(struct uart_driver *reg, struct uart_port *port);
+int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port);
+
+#define uart_circ_empty(circ)		((circ)->head == (circ)->tail)
+#define uart_circ_clear(circ)		((circ)->head = (circ)->tail = 0)
+
+#define uart_circ_chars_pending(circ)	\
+	(CIRC_CNT((circ)->head, (circ)->tail, UART_XMIT_SIZE))
+
+#define uart_circ_chars_free(circ)	\
+	(CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE))
+
+#define uart_tx_stopped(port)		\
+	((port)->info->tty->stopped || (port)->info->tty->hw_stopped)
+
+/*
+ * The following are helper functions for the low level drivers.
+ */
+#ifdef SUPPORT_SYSRQ
+static inline int
+uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
+		       struct pt_regs *regs)
+{
+	if (port->sysrq) {
+		if (ch && time_before(jiffies, port->sysrq)) {
+			handle_sysrq(ch, regs, NULL);
+			port->sysrq = 0;
+			return 1;
+		}
+		port->sysrq = 0;
+	}
+	return 0;
+}
+#else
+#define uart_handle_sysrq_char(port,ch,regs)	(0)
+#endif
+
+/*
+ * We do the SysRQ and SAK checking like this...
+ */
+static inline int uart_handle_break(struct uart_port *port)
+{
+	struct uart_info *info = port->info;
+#ifdef SUPPORT_SYSRQ
+	if (port->cons && port->cons->index == port->line) {
+		if (!port->sysrq) {
+			port->sysrq = jiffies + HZ*5;
+			return 1;
+		}
+		port->sysrq = 0;
+	}
+#endif
+	if (info->flags & UPF_SAK)
+		do_SAK(info->tty);
+	return 0;
+}
+
+/**
+ *	uart_handle_dcd_change - handle a change of carrier detect state
+ *	@port: uart_port structure for the open port
+ *	@status: new carrier detect status, nonzero if active
+ */
+static inline void
+uart_handle_dcd_change(struct uart_port *port, unsigned int status)
+{
+	struct uart_info *info = port->info;
+
+	port->icount.dcd++;
+
+#ifdef CONFIG_HARD_PPS
+	if ((port->flags & UPF_HARDPPS_CD) && status)
+		hardpps();
+#endif
+
+	if (info->flags & UIF_CHECK_CD) {
+		if (status)
+			wake_up_interruptible(&info->open_wait);
+		else if (info->tty)
+			tty_hangup(info->tty);
+	}
+}
+
+/**
+ *	uart_handle_cts_change - handle a change of clear-to-send state
+ *	@port: uart_port structure for the open port
+ *	@status: new clear to send status, nonzero if active
+ */
+static inline void
+uart_handle_cts_change(struct uart_port *port, unsigned int status)
+{
+	struct uart_info *info = port->info;
+	struct tty_struct *tty = info->tty;
+
+	port->icount.cts++;
+
+	if (info->flags & UIF_CTS_FLOW) {
+		if (tty->hw_stopped) {
+			if (status) {
+				tty->hw_stopped = 0;
+				port->ops->start_tx(port, 0);
+				uart_event(port, EVT_WRITE_WAKEUP);
+			}
+		} else {
+			if (!status) {
+				tty->hw_stopped = 1;
+				port->ops->stop_tx(port, 0);
+			}
+		}
+	}
+}
+
+/*
+ *	UART_ENABLE_MS - determine if port should enable modem status irqs
+ */
+#define UART_ENABLE_MS(port,cflag)	((port)->flags & UPF_HARDPPS_CD || \
+					 (cflag) & CRTSCTS || \
+					 !(cflag) & CLOCAL)
+
+#endif
diff --git a/include/linux/shm.h b/include/linux/shm.h
index be3351619c2e..be7d433725ca 100644
--- a/include/linux/shm.h
+++ b/include/linux/shm.h
@@ -71,6 +71,19 @@ struct shm_info {
 };
 
 #ifdef __KERNEL__
+struct shmid_kernel /* private to the kernel */
+{	
+	struct kern_ipc_perm	shm_perm;
+	struct file *		shm_file;
+	int			id;
+	unsigned long		shm_nattch;
+	unsigned long		shm_segsz;
+	time_t			shm_atim;
+	time_t			shm_dtim;
+	time_t			shm_ctim;
+	pid_t			shm_cprid;
+	pid_t			shm_lprid;
+};
 
 /* shm_mode upper byte flags */
 #define	SHM_DEST	01000	/* segment will be destroyed on last detach */
diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h
index 13d8c7ace0bb..cfb23f363e61 100644
--- a/include/linux/smp_lock.h
+++ b/include/linux/smp_lock.h
@@ -7,7 +7,7 @@
 
 #define lock_kernel()				do { } while(0)
 #define unlock_kernel()				do { } while(0)
-#define release_kernel_lock(task, cpu)		do { } while(0)
+#define release_kernel_lock(task)		do { } while(0)
 #define reacquire_kernel_lock(task)		do { } while(0)
 #define kernel_locked() 1
 
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 194541968c6a..d9f4af4103e4 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -2,6 +2,7 @@
 #define __LINUX_SPINLOCK_H
 
 #include <linux/config.h>
+#include <linux/preempt.h>
 #include <linux/linkage.h>
 #include <linux/compiler.h>
 #include <linux/thread_info.h>
@@ -120,36 +121,6 @@
 
 #ifdef CONFIG_PREEMPT
 
-asmlinkage void preempt_schedule(void);
-
-#define preempt_get_count() (current_thread_info()->preempt_count)
-
-#define preempt_disable() \
-do { \
-	++current_thread_info()->preempt_count; \
-	barrier(); \
-} while (0)
-
-#define preempt_enable_no_resched() \
-do { \
-	--current_thread_info()->preempt_count; \
-	barrier(); \
-} while (0)
-
-#define preempt_enable() \
-do { \
-	--current_thread_info()->preempt_count; \
-	barrier(); \
-	if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
-		preempt_schedule(); \
-} while (0)
-
-#define preempt_check_resched() \
-do { \
-	if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
-		preempt_schedule(); \
-} while (0)
-
 #define spin_lock(lock)	\
 do { \
 	preempt_disable(); \
@@ -179,12 +150,6 @@ do { \
 
 #else
 
-#define preempt_get_count()		(0)
-#define preempt_disable()		do { } while (0)
-#define preempt_enable_no_resched()	do {} while(0)
-#define preempt_enable()		do { } while (0)
-#define preempt_check_resched()		do { } while (0)
-
 #define spin_lock(lock)			_raw_spin_lock(lock)
 #define spin_trylock(lock)		_raw_spin_trylock(lock)
 #define spin_unlock(lock)		_raw_spin_unlock(lock)
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 0b448a811a39..8ba0854d69af 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -142,6 +142,19 @@ struct sysinfo;
 struct address_space;
 struct zone_t;
 
+/* linux/mm/rmap.c */
+extern int FASTCALL(page_referenced(struct page *));
+extern void FASTCALL(page_add_rmap(struct page *, pte_t *));
+extern void FASTCALL(page_remove_rmap(struct page *, pte_t *));
+extern int FASTCALL(try_to_unmap(struct page *));
+extern int FASTCALL(page_over_rsslimit(struct page *));
+
+/* return values of try_to_unmap */
+#define	SWAP_SUCCESS	0
+#define	SWAP_AGAIN	1
+#define	SWAP_FAIL	2
+#define	SWAP_ERROR	3
+
 /* linux/mm/swap.c */
 extern void FASTCALL(lru_cache_add(struct page *));
 extern void FASTCALL(__lru_cache_del(struct page *));
@@ -168,6 +181,7 @@ int rw_swap_page_sync(int rw, swp_entry_t entry, struct page *page);
 extern void show_swap_cache_info(void);
 #endif
 extern int add_to_swap_cache(struct page *, swp_entry_t);
+extern int add_to_swap(struct page *);
 extern void __delete_from_swap_cache(struct page *page);
 extern void delete_from_swap_cache(struct page *page);
 extern int move_to_swap_cache(struct page *page, swp_entry_t entry);
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index da8115ec58f6..01f1208ca449 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -72,7 +72,7 @@ enum
 /* CTL_BUS names: */
 enum
 {
-	BUS_ISA=1		/* ISA */
+	CTL_BUS_ISA=1		/* ISA */
 };
 
 /* CTL_KERN names: */
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 11836df8a6ab..92496658baf5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -431,6 +431,10 @@ extern void usb_free_dev(struct usb_device *);
 /* for when layers above USB add new non-USB drivers */
 extern void usb_scan_devices(void);
 
+/* for probe/disconnect with correct module usage counting */
+void *usb_bind_driver(struct usb_driver *driver, struct usb_device *dev, unsigned int ifnum);
+void usb_unbind_driver(struct usb_device *device, struct usb_interface *intf);
+
 /* mostly for devices emulating SCSI over USB */
 extern int usb_reset_device(struct usb_device *dev);
 
diff --git a/include/scsi/scsicam.h b/include/scsi/scsicam.h
index 8b0a3c197220..5a525fd995b2 100644
--- a/include/scsi/scsicam.h
+++ b/include/scsi/scsicam.h
@@ -12,9 +12,8 @@
 
 #ifndef SCSICAM_H
 #define SCSICAM_H
-#include <linux/kdev_t.h>
-extern int scsicam_bios_param (Disk *disk, kdev_t dev, int *ip);
+extern int scsicam_bios_param (Disk *disk, struct block_device *bdev, int *ip);
 extern int scsi_partsize(unsigned char *buf, unsigned long capacity,
            unsigned int  *cyls, unsigned int *hds, unsigned int *secs);
-extern unsigned char *scsi_bios_ptable(kdev_t dev);
+extern unsigned char *scsi_bios_ptable(struct block_device *bdev);
 #endif /* def SCSICAM_H */