Merge branch 'linus' into sched/core

Merge reason: merge the latest fixes, update to -rc4.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

56 files changed, 317 insertions, 109 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index de2f82e..2f3b3a0 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -55,6 +55,7 @@
 #include <linux/mm.h>
 #include <linux/cdev.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #if defined(__alpha__) || defined(__powerpc__)
 #include <asm/pgtable.h>	/* For pte_wrprotect */
 #endif
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 6816be6..8b10386 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -14,6 +14,9 @@
 #ifndef ASMARM_AMBA_H
 #define ASMARM_AMBA_H
 
+#include <linux/device.h>
+#include <linux/resource.h>
+
 #define AMBA_NR_IRQS	2
 
 struct amba_device {
diff --git a/include/linux/amba/pl061.h b/include/linux/amba/pl061.h
index b4fbd98..5ddd9ad 100644
--- a/include/linux/amba/pl061.h
+++ b/include/linux/amba/pl061.h
@@ -1,3 +1,5 @@
+#include <linux/types.h>
+
 /* platform data for the PL061 GPIO driver */
 
 struct pl061_platform_data {
diff --git a/include/linux/ata.h b/include/linux/ata.h
index b4c85e2..700c5b9b 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -1025,8 +1025,8 @@ static inline int ata_ok(u8 status)
 
 static inline int lba_28_ok(u64 block, u32 n_block)
 {
-	/* check the ending block number */
-	return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
+	/* check the ending block number: must be LESS THAN 0x0fffffff */
+	return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
 }
 
 static inline int lba_48_ok(u64 block, u32 n_block)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index b793898..b796eab 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -21,9 +21,6 @@
 	     (bit) < (size); \
 	     (bit) = find_next_bit((addr), (size), (bit) + 1))
 
-/* Temporary */
-#define for_each_bit(bit, addr, size) for_each_set_bit(bit, addr, size)
-
 static __inline__ int get_bitmask_order(unsigned int count)
 {
 	int order;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index ebd22db..6690e8b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -158,7 +158,6 @@ enum rq_flag_bits {
 struct request {
 	struct list_head queuelist;
 	struct call_single_data csd;
-	int cpu;
 
 	struct request_queue *q;
 
@@ -166,9 +165,11 @@ struct request {
 	enum rq_cmd_type_bits cmd_type;
 	unsigned long atomic_flags;
 
+	int cpu;
+
 	/* the following two fields are internal, NEVER access directly */
-	sector_t __sector;		/* sector cursor */
 	unsigned int __data_len;	/* total data len */
+	sector_t __sector;		/* sector cursor */
 
 	struct bio *bio;
 	struct bio *biotail;
@@ -201,20 +202,20 @@ struct request {
 
 	unsigned short ioprio;
 
+	int ref_count;
+
 	void *special;		/* opaque pointer available for LLD use */
 	char *buffer;		/* kaddr of the current segment if available */
 
 	int tag;
 	int errors;
 
-	int ref_count;
-
 	/*
 	 * when request is used as a packet command carrier
 	 */
-	unsigned short cmd_len;
 	unsigned char __cmd[BLK_MAX_CDB];
 	unsigned char *cmd;
+	unsigned short cmd_len;
 
 	unsigned int extra_len;	/* length of alignment and padding */
 	unsigned int sense_len;
@@ -921,26 +922,7 @@ extern void blk_cleanup_queue(struct request_queue *);
 extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
 extern void blk_queue_bounce_limit(struct request_queue *, u64);
 extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
-
-/* Temporary compatibility wrapper */
-static inline void blk_queue_max_sectors(struct request_queue *q, unsigned int max)
-{
-	blk_queue_max_hw_sectors(q, max);
-}
-
 extern void blk_queue_max_segments(struct request_queue *, unsigned short);
-
-static inline void blk_queue_max_phys_segments(struct request_queue *q, unsigned short max)
-{
-	blk_queue_max_segments(q, max);
-}
-
-static inline void blk_queue_max_hw_segments(struct request_queue *q, unsigned short max)
-{
-	blk_queue_max_segments(q, max);
-}
-
-
 extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
 extern void blk_queue_max_discard_sectors(struct request_queue *q,
 		unsigned int max_discard_sectors);
@@ -1030,11 +1012,6 @@ static inline int sb_issue_discard(struct super_block *sb,
 
 extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);
 
-#define MAX_PHYS_SEGMENTS 128
-#define MAX_HW_SEGMENTS 128
-#define SAFE_MAX_SECTORS 255
-#define MAX_SEGMENT_SIZE	65536
-
 enum blk_default_limits {
 	BLK_MAX_SEGMENTS	= 128,
 	BLK_SAFE_MAX_SECTORS	= 255,
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index 5076fe0..6cee17c 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -18,6 +18,7 @@
 #define _LINUX_DELAYACCT_H
 
 #include <linux/sched.h>
+#include <linux/slab.h>
 
 /*
  * Per-task flags relevant to delay accounting
diff --git a/include/linux/drbd.h b/include/linux/drbd.h
index 7896227..4341b1a 100644
--- a/include/linux/drbd.h
+++ b/include/linux/drbd.h
@@ -56,7 +56,7 @@ extern const char *drbd_buildtag(void);
 #define REL_VERSION "8.3.7"
 #define API_VERSION 88
 #define PRO_VERSION_MIN 86
-#define PRO_VERSION_MAX 91
+#define PRO_VERSION_MAX 92
 
 
 enum drbd_io_error_p {
diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h
index a4d82f8..f7431a4 100644
--- a/include/linux/drbd_nl.h
+++ b/include/linux/drbd_nl.h
@@ -12,7 +12,7 @@
 #endif
 
 NL_PACKET(primary, 1,
-       NL_BIT(		1,	T_MAY_IGNORE,	overwrite_peer)
+       NL_BIT(		1,	T_MAY_IGNORE,	primary_force)
 )
 
 NL_PACKET(secondary, 2, )
@@ -63,6 +63,7 @@ NL_PACKET(net_conf, 5,
 	NL_BIT(		41,	T_MAY_IGNORE,	always_asbp)
 	NL_BIT(		61,	T_MAY_IGNORE,	no_cork)
 	NL_BIT(		62,	T_MANDATORY,	auto_sndbuf_size)
+	NL_BIT(		70,	T_MANDATORY,	dry_run)
 )
 
 NL_PACKET(disconnect, 6, )
diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index 5a361f8..da7e52b 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -64,9 +64,12 @@ extern bool freeze_task(struct task_struct *p, bool sig_only);
 extern void cancel_freezing(struct task_struct *p);
 
 #ifdef CONFIG_CGROUP_FREEZER
-extern int cgroup_frozen(struct task_struct *task);
+extern int cgroup_freezing_or_frozen(struct task_struct *task);
 #else /* !CONFIG_CGROUP_FREEZER */
-static inline int cgroup_frozen(struct task_struct *task) { return 0; }
+static inline int cgroup_freezing_or_frozen(struct task_struct *task)
+{
+	return 0;
+}
 #endif /* !CONFIG_CGROUP_FREEZER */
 
 /*
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 10b8ded..39d57bc 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2212,6 +2212,7 @@ extern int generic_segment_checks(const struct iovec *iov,
 /* fs/block_dev.c */
 extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
 				unsigned long nr_segs, loff_t pos);
+extern int blkdev_fsync(struct file *filp, struct dentry *dentry, int datasync);
 
 /* fs/splice.c */
 extern ssize_t generic_file_splice_read(struct file *, loff_t *,
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index df8fd9a..0175590 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -15,6 +15,7 @@
 #include <linux/inotify.h>
 #include <linux/fsnotify_backend.h>
 #include <linux/audit.h>
+#include <linux/slab.h>
 
 /*
  * fsnotify_d_instantiate - instantiate a dentry for inode
diff --git a/include/linux/gameport.h b/include/linux/gameport.h
index 48e68da..361d1cc 100644
--- a/include/linux/gameport.h
+++ b/include/linux/gameport.h
@@ -16,6 +16,7 @@
 #include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/timer.h>
+#include <linux/slab.h>
 
 struct gameport {
 
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 56b5051..5f2f4c4 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -109,7 +109,7 @@ struct hd_struct {
 };
 
 #define GENHD_FL_REMOVABLE			1
-#define GENHD_FL_DRIVERFS			2
+/* 2 is unused */
 #define GENHD_FL_MEDIA_CHANGE_NOTIFY		4
 #define GENHD_FL_CD				8
 #define GENHD_FL_UP				16
diff --git a/include/linux/i2o.h b/include/linux/i2o.h
index 87018dc..9e7a12d 100644
--- a/include/linux/i2o.h
+++ b/include/linux/i2o.h
@@ -782,7 +782,6 @@ extern int i2o_exec_lct_get(struct i2o_controller *);
 #define to_i2o_driver(drv) container_of(drv,struct i2o_driver, driver)
 #define to_i2o_device(dev) container_of(dev, struct i2o_device, device)
 #define to_i2o_controller(dev) container_of(dev, struct i2o_controller, device)
-#define kobj_to_i2o_device(kobj) to_i2o_device(container_of(kobj, struct device, kobj))
 
 /**
  *	i2o_out_to_virt - Turn an I2O message to a virtual address
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 97e6ab4..3239d1c 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1169,6 +1169,7 @@ extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
 extern void ide_timer_expiry(unsigned long);
 extern irqreturn_t ide_intr(int irq, void *dev_id);
 extern void do_ide_request(struct request_queue *);
+extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
 
 void ide_init_disk(struct gendisk *, ide_drive_t *);
 
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 97eb928..25085dd 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -19,6 +19,7 @@
 #define _LINUX_IO_MAPPING_H
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 #include <asm/page.h>
 #include <asm/iomap.h>
diff --git a/include/linux/iscsi_ibft.h b/include/linux/iscsi_ibft.h
index 6092487..d2e4042 100644
--- a/include/linux/iscsi_ibft.h
+++ b/include/linux/iscsi_ibft.h
@@ -42,9 +42,13 @@ extern struct ibft_table_header *ibft_addr;
  * mapped address is set in the ibft_addr variable.
  */
 #ifdef CONFIG_ISCSI_IBFT_FIND
-extern void __init reserve_ibft_region(void);
+unsigned long find_ibft_region(unsigned long *sizep);
 #else
-static inline void reserve_ibft_region(void) { }
+static inline unsigned long find_ibft_region(unsigned long *sizep)
+{
+	*sizep = 0;
+	return 0;
+}
 #endif
 
 #endif /* ISCSI_IBFT_H */
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index f3aa59c..516a2a2 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -31,6 +31,7 @@
 #include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/lockdep.h>
+#include <linux/slab.h>
 
 #define journal_oom_retry 1
 
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 1ec8763..a4d2e9f 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -30,6 +30,7 @@
 #include <linux/bit_spinlock.h>
 #include <linux/mutex.h>
 #include <linux/timer.h>
+#include <linux/slab.h>
 #endif
 
 #define journal_oom_retry 1
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 7f07074..9365227 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -426,7 +426,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
 		.burst = DEFAULT_RATELIMIT_BURST,       \
 	};                                              \
 							\
-	if (!__ratelimit(&_rs))                         \
+	if (__ratelimit(&_rs))                          \
 		printk(fmt, ##__VA_ARGS__);		\
 })
 #else
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index ece0b1c..e117b1a 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -86,7 +86,8 @@ union { \
  */
 #define INIT_KFIFO(name) \
 	name = __kfifo_initializer(sizeof(name##kfifo_buffer) - \
-				sizeof(struct kfifo), name##kfifo_buffer)
+				sizeof(struct kfifo), \
+				name##kfifo_buffer + sizeof(struct kfifo))
 
 /**
  * DEFINE_KFIFO - macro to define and initialize a kfifo
diff --git a/include/linux/lcm.h b/include/linux/lcm.h
new file mode 100644
index 0000000..7bf01d7
--- /dev/null
+++ b/include/linux/lcm.h
@@ -0,0 +1,8 @@
+#ifndef _LCM_H
+#define _LCM_H
+
+#include <linux/compiler.h>
+
+unsigned long lcm(unsigned long a, unsigned long b) __attribute_const__;
+
+#endif /* _LCM_H */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index f8ea71e..b2f2003 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -146,6 +146,7 @@ enum {
 	ATA_DFLAG_SLEEPING	= (1 << 15), /* device is sleeping */
 	ATA_DFLAG_DUBIOUS_XFER	= (1 << 16), /* data transfer not verified */
 	ATA_DFLAG_NO_UNLOAD	= (1 << 17), /* device doesn't support unload */
+	ATA_DFLAG_UNLOCK_HPA	= (1 << 18), /* unlock HPA */
 	ATA_DFLAG_INIT_MASK	= (1 << 24) - 1,
 
 	ATA_DFLAG_DETACH	= (1 << 24),
diff --git a/include/linux/mm.h b/include/linux/mm.h
index e70f21b..462acaf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -783,8 +783,8 @@ struct mm_walk {
 	int (*pmd_entry)(pmd_t *, unsigned long, unsigned long, struct mm_walk *);
 	int (*pte_entry)(pte_t *, unsigned long, unsigned long, struct mm_walk *);
 	int (*pte_hole)(unsigned long, unsigned long, struct mm_walk *);
-	int (*hugetlb_entry)(pte_t *, unsigned long, unsigned long,
-			     struct mm_walk *);
+	int (*hugetlb_entry)(pte_t *, unsigned long,
+			     unsigned long, unsigned long, struct mm_walk *);
 	struct mm_struct *mm;
 	void *private;
 };
diff --git a/include/linux/module.h b/include/linux/module.h
index 5e869ff..515d53a 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -330,8 +330,11 @@ struct module
 	struct module_notes_attrs *notes_attrs;
 #endif
 
+#ifdef CONFIG_SMP
 	/* Per-cpu data. */
-	void *percpu;
+	void __percpu *percpu;
+	unsigned int percpu_size;
+#endif
 
 	/* The command line arguments (may be mangled).  People like
 	   keeping pointers to this stuff */
@@ -365,7 +368,8 @@ struct module
 	void (*exit)(void);
 
 	struct module_ref {
-		int count;
+		unsigned int incs;
+		unsigned int decs;
 	} __percpu *refptr;
 #endif
 
@@ -392,6 +396,7 @@ static inline int module_is_live(struct module *mod)
 struct module *__module_text_address(unsigned long addr);
 struct module *__module_address(unsigned long addr);
 bool is_module_address(unsigned long addr);
+bool is_module_percpu_address(unsigned long addr);
 bool is_module_text_address(unsigned long addr);
 
 static inline int within_module_core(unsigned long addr, struct module *mod)
@@ -459,9 +464,9 @@ static inline void __module_get(struct module *module)
 {
 	if (module) {
 		preempt_disable();
-		__this_cpu_inc(module->refptr->count);
+		__this_cpu_inc(module->refptr->incs);
 		trace_module_get(module, _THIS_IP_,
-				 __this_cpu_read(module->refptr->count));
+				 __this_cpu_read(module->refptr->incs));
 		preempt_enable();
 	}
 }
@@ -474,11 +479,10 @@ static inline int try_module_get(struct module *module)
 		preempt_disable();
 
 		if (likely(module_is_live(module))) {
-			__this_cpu_inc(module->refptr->count);
+			__this_cpu_inc(module->refptr->incs);
 			trace_module_get(module, _THIS_IP_,
-				__this_cpu_read(module->refptr->count));
-		}
-		else
+				__this_cpu_read(module->refptr->incs));
+		} else
 			ret = 0;
 
 		preempt_enable();
@@ -563,6 +567,11 @@ static inline bool is_module_address(unsigned long addr)
 	return false;
 }
 
+static inline bool is_module_percpu_address(unsigned long addr)
+{
+	return false;
+}
+
 static inline bool is_module_text_address(unsigned long addr)
 {
 	return false;
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 717a5e5..e82957a 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -176,6 +176,7 @@ struct nfs_server {
 #define NFS_CAP_ATIME		(1U << 11)
 #define NFS_CAP_CTIME		(1U << 12)
 #define NFS_CAP_MTIME		(1U << 13)
+#define NFS_CAP_POSIX_LOCK	(1U << 14)
 
 
 /* maximum number of slots to use */
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 30b0813..aef22ae 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -39,6 +39,7 @@ enum {
 	PCG_CACHE, /* charged as cache */
 	PCG_USED, /* this object is in use. */
 	PCG_ACCT_LRU, /* page has been accounted for */
+	PCG_FILE_MAPPED, /* page is accounted as "mapped" */
 };
 
 #define TESTPCGFLAG(uname, lname)			\
@@ -73,6 +74,11 @@ CLEARPCGFLAG(AcctLRU, ACCT_LRU)
 TESTPCGFLAG(AcctLRU, ACCT_LRU)
 TESTCLEARPCGFLAG(AcctLRU, ACCT_LRU)
 
+
+SETPCGFLAG(FileMapped, FILE_MAPPED)
+CLEARPCGFLAG(FileMapped, FILE_MAPPED)
+TESTPCGFLAG(FileMapped, FILE_MAPPED)
+
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
 	return page_to_nid(pc->page);
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index a93e5bf..d3a38d6 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -2,10 +2,10 @@
 #define __LINUX_PERCPU_H
 
 #include <linux/preempt.h>
-#include <linux/slab.h> /* For kmalloc() */
 #include <linux/smp.h>
 #include <linux/cpumask.h>
 #include <linux/pfn.h>
+#include <linux/init.h>
 
 #include <asm/percpu.h>
 
@@ -135,9 +135,7 @@ extern int __init pcpu_page_first_chunk(size_t reserved_size,
 #define per_cpu_ptr(ptr, cpu)	SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)))
 
 extern void __percpu *__alloc_reserved_percpu(size_t size, size_t align);
-extern void __percpu *__alloc_percpu(size_t size, size_t align);
-extern void free_percpu(void __percpu *__pdata);
-extern phys_addr_t per_cpu_ptr_to_phys(void *addr);
+extern bool is_kernel_percpu_address(unsigned long addr);
 
 #ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
 extern void __init setup_per_cpu_areas(void);
@@ -147,25 +145,10 @@ extern void __init setup_per_cpu_areas(void);
 
 #define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
 
-static inline void __percpu *__alloc_percpu(size_t size, size_t align)
+/* can't distinguish from other static vars, always false */
+static inline bool is_kernel_percpu_address(unsigned long addr)
 {
-	/*
-	 * Can't easily make larger alignment work with kmalloc.  WARN
-	 * on it.  Larger alignment should only be used for module
-	 * percpu sections on SMP for which this path isn't used.
-	 */
-	WARN_ON_ONCE(align > SMP_CACHE_BYTES);
-	return kzalloc(size, GFP_KERNEL);
-}
-
-static inline void free_percpu(void __percpu *p)
-{
-	kfree(p);
-}
-
-static inline phys_addr_t per_cpu_ptr_to_phys(void *addr)
-{
-	return __pa(addr);
+	return false;
 }
 
 static inline void __init setup_per_cpu_areas(void) { }
@@ -177,6 +160,10 @@ static inline void *pcpu_lpage_remapped(void *kaddr)
 
 #endif /* CONFIG_SMP */
 
+extern void __percpu *__alloc_percpu(size_t size, size_t align);
+extern void free_percpu(void __percpu *__pdata);
+extern phys_addr_t per_cpu_ptr_to_phys(void *addr);
+
 #define alloc_percpu(type)	\
 	(typeof(type) __percpu *)__alloc_percpu(sizeof(type), __alignof__(type))
 
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 9547703..c8e3754 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -842,13 +842,6 @@ extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
 
 extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64);
 
-static inline void
-perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
-{
-	if (atomic_read(&perf_swevent_enabled[event_id]))
-		__perf_sw_event(event_id, nr, nmi, regs, addr);
-}
-
 extern void
 perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip);
 
@@ -887,6 +880,20 @@ static inline void perf_fetch_caller_regs(struct pt_regs *regs, int skip)
 	return perf_arch_fetch_caller_regs(regs, ip, skip);
 }
 
+static inline void
+perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
+{
+	if (atomic_read(&perf_swevent_enabled[event_id])) {
+		struct pt_regs hot_regs;
+
+		if (!regs) {
+			perf_fetch_caller_regs(&hot_regs, 1);
+			regs = &hot_regs;
+		}
+		__perf_sw_event(event_id, nr, nmi, regs, addr);
+	}
+}
+
 extern void __perf_event_mmap(struct vm_area_struct *vma);
 
 static inline void perf_event_mmap(struct vm_area_struct *vma)
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index c5da749..55ca73c 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -121,6 +121,13 @@ do {									\
  * (Note, rcu_assign_pointer and rcu_dereference are not needed to control
  * access to data items when inserting into or looking up from the radix tree)
  *
+ * Note that the value returned by radix_tree_tag_get() may not be relied upon
+ * if only the RCU read lock is held.  Functions to set/clear tags and to
+ * delete nodes running concurrently with it may affect its result such that
+ * two consecutive reads in the same locked section may return different
+ * values.  If reliability is required, modification functions must also be
+ * excluded from concurrency.
+ *
  * radix_tree_tagged is able to be called without locking or RCU.
  */
 
diff --git a/include/linux/security.h b/include/linux/security.h
index 233d20b..3158dd9 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -33,7 +33,7 @@
 #include <linux/sched.h>
 #include <linux/key.h>
 #include <linux/xfrm.h>
-#include <linux/gfp.h>
+#include <linux/slab.h>
 #include <net/flow.h>
 
 /* Maximum number of letters for an LSM name string */
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 4884462..49d1247 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -106,6 +106,7 @@ int kmem_cache_shrink(struct kmem_cache *);
 void kmem_cache_free(struct kmem_cache *, void *);
 unsigned int kmem_cache_size(struct kmem_cache *);
 const char *kmem_cache_name(struct kmem_cache *);
+int kern_ptr_validate(const void *ptr, unsigned long size);
 int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr);
 
 /*
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 97b60b3..af56071 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -21,6 +21,7 @@
 
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
+#include <linux/slab.h>
 
 /*
  * INTERFACES between SPI master-side drivers and SPI infrastructure.
diff --git a/include/linux/taskstats_kern.h b/include/linux/taskstats_kern.h
index b6523c1..58de6ed 100644
--- a/include/linux/taskstats_kern.h
+++ b/include/linux/taskstats_kern.h
@@ -9,6 +9,7 @@
 
 #include <linux/taskstats.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 
 #ifdef CONFIG_TASKSTATS
 extern struct kmem_cache *taskstats_cache;
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index bbf45d5..f4b7ca5 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -15,6 +15,8 @@
 #ifndef __LINUX_USB_GADGET_H
 #define __LINUX_USB_GADGET_H
 
+#include <linux/slab.h>
+
 struct usb_ep;
 
 /**
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h
index ae4f039..92228a8 100644
--- a/include/linux/virtio_console.h
+++ b/include/linux/virtio_console.h
@@ -12,37 +12,14 @@
 
 /* Feature bits */
 #define VIRTIO_CONSOLE_F_SIZE	0	/* Does host provide console size? */
-#define VIRTIO_CONSOLE_F_MULTIPORT 1	/* Does host provide multiple ports? */
 
 struct virtio_console_config {
 	/* colums of the screens */
 	__u16 cols;
 	/* rows of the screens */
 	__u16 rows;
-	/* max. number of ports this device can hold */
-	__u32 max_nr_ports;
-	/* number of ports added so far */
-	__u32 nr_ports;
 } __attribute__((packed));
 
-/*
- * A message that's passed between the Host and the Guest for a
- * particular port.
- */
-struct virtio_console_control {
-	__u32 id;		/* Port number */
-	__u16 event;		/* The kind of control event (see below) */
-	__u16 value;		/* Extra information for the key */
-};
-
-/* Some events for control messages */
-#define VIRTIO_CONSOLE_PORT_READY	0
-#define VIRTIO_CONSOLE_CONSOLE_PORT	1
-#define VIRTIO_CONSOLE_RESIZE		2
-#define VIRTIO_CONSOLE_PORT_OPEN	3
-#define VIRTIO_CONSOLE_PORT_NAME	4
-#define VIRTIO_CONSOLE_PORT_REMOVE	5
-
 #ifdef __KERNEL__
 int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));
 #endif /* __KERNEL__ */
diff --git a/include/linux/wimax/debug.h b/include/linux/wimax/debug.h
index db8096e..57031b4 100644
--- a/include/linux/wimax/debug.h
+++ b/include/linux/wimax/debug.h
@@ -155,6 +155,7 @@
 
 #include <linux/types.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 
 
 /* Backend stuff */
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 76e8903..36520de 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -34,6 +34,9 @@ struct writeback_control {
 	enum writeback_sync_modes sync_mode;
 	unsigned long *older_than_this;	/* If !NULL, only write back inodes
 					   older than this */
+	unsigned long wb_start;         /* Time writeback_inodes_wb was
+					   called. This is needed to avoid
+					   extra jobs and livelock */
 	long nr_to_write;		/* Write this many pages, and decrement
 					   this for each page written */
 	long pages_skipped;		/* Pages which were not written */
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index f076dfa..4f3760a 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -54,6 +54,7 @@ enum p9_proto_versions{
 
 enum p9_trans_status {
 	Connected,
+	BeginDisconnect,
 	Disconnected,
 	Hung,
 };
@@ -198,6 +199,7 @@ int p9_client_version(struct p9_client *);
 struct p9_client *p9_client_create(const char *dev_name, char *options);
 void p9_client_destroy(struct p9_client *clnt);
 void p9_client_disconnect(struct p9_client *clnt);
+void p9_client_begin_disconnect(struct p9_client *clnt);
 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
 					char *uname, u32 n_uname, char *aname);
 struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname,
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 717e219..206d222 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -10,6 +10,7 @@
 #include <linux/spinlock.h>
 #include <linux/timer.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <asm/atomic.h>
 
 #define	AX25_T1CLAMPLO  		1
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index c07ac96..c49086d 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -2,6 +2,7 @@
 #define __NET_FIB_RULES_H
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <linux/netdevice.h>
 #include <linux/fib_rules.h>
 #include <net/flow.h>
diff --git a/include/net/ipx.h b/include/net/ipx.h
index a14121d..ef51a66 100644
--- a/include/net/ipx.h
+++ b/include/net/ipx.h
@@ -13,6 +13,7 @@
 #include <net/datalink.h>
 #include <linux/ipx.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 
 struct ipx_address {
 	__be32  net;
diff --git a/include/net/iucv/iucv.h b/include/net/iucv/iucv.h
index 5e310c8..205a336 100644
--- a/include/net/iucv/iucv.h
+++ b/include/net/iucv/iucv.h
@@ -28,6 +28,7 @@
  */
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <asm/debug.h>
 
 /*
diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
index 2d2a1f9..32d15bd 100644
--- a/include/net/netfilter/nf_conntrack_extend.h
+++ b/include/net/netfilter/nf_conntrack_extend.h
@@ -1,6 +1,8 @@
 #ifndef _NF_CONNTRACK_EXTEND_H
 #define _NF_CONNTRACK_EXTEND_H
 
+#include <linux/slab.h>
+
 #include <net/netfilter/nf_conntrack.h>
 
 enum nf_ct_ext_id {
diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index 60ebbc1..9db401a 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -31,6 +31,7 @@
 #define _NETLABEL_H
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <linux/net.h>
 #include <linux/skbuff.h>
 #include <linux/in.h>
diff --git a/include/net/netrom.h b/include/net/netrom.h
index ab170a6..f0793c1 100644
--- a/include/net/netrom.h
+++ b/include/net/netrom.h
@@ -9,6 +9,7 @@
 
 #include <linux/netrom.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 
 #define	NR_NETWORK_LEN			15
diff --git a/include/net/sock.h b/include/net/sock.h
index 092b055..b4603cd 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -51,6 +51,7 @@
 #include <linux/skbuff.h>	/* struct sk_buff */
 #include <linux/mm.h>
 #include <linux/security.h>
+#include <linux/slab.h>
 
 #include <linux/filter.h>
 #include <linux/rculist_nulls.h>
diff --git a/include/net/x25.h b/include/net/x25.h
index 9baa07d..468551e 100644
--- a/include/net/x25.h
+++ b/include/net/x25.h
@@ -10,6 +10,7 @@
 #ifndef _X25_H
 #define _X25_H 
 #include <linux/x25.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 
 #define	X25_ADDR_LEN			16
@@ -182,6 +183,10 @@ extern int  sysctl_x25_clear_request_timeout;
 extern int  sysctl_x25_ack_holdback_timeout;
 extern int  sysctl_x25_forward;
 
+extern int x25_parse_address_block(struct sk_buff *skb,
+		struct x25_address *called_addr,
+		struct x25_address *calling_addr);
+
 extern int  x25_addr_ntoa(unsigned char *, struct x25_address *,
 			  struct x25_address *);
 extern int  x25_addr_aton(unsigned char *, struct x25_address *,
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index d74e080..ac52f33 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -12,6 +12,7 @@
 #include <linux/in6.h>
 #include <linux/mutex.h>
 #include <linux/audit.h>
+#include <linux/slab.h>
 
 #include <net/sock.h>
 #include <net/dst.h>
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 9eaa3f0..3b58685 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -36,6 +36,7 @@
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_transport_sas.h>
 #include <linux/scatterlist.h>
+#include <linux/slab.h>
 
 struct block_device;
 
diff --git a/include/sound/ak4113.h b/include/sound/ak4113.h
index 8988eda..2609048 100644
--- a/include/sound/ak4113.h
+++ b/include/sound/ak4113.h
@@ -307,7 +307,7 @@ struct ak4113 {
 
 int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read,
 		ak4113_write_t *write,
-		const unsigned char pgm[AK4113_WRITABLE_REGS],
+		const unsigned char *pgm,
 		void *private_data, struct ak4113 **r_ak4113);
 void snd_ak4113_reg_write(struct ak4113 *ak4113, unsigned char reg,
 		unsigned char mask, unsigned char val);
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 061f16d..0a0b019 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -219,7 +219,6 @@ struct snd_soc_dai {
 	struct snd_soc_codec *codec;
 	unsigned int active;
 	unsigned char pop_wait:1;
-	void *dma_data;
 
 	/* DAI private data */
 	void *private_data;
@@ -230,4 +229,21 @@ struct snd_soc_dai {
 	struct list_head list;
 };
 
+static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai,
+					     const struct snd_pcm_substream *ss)
+{
+	return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+		dai->playback.dma_data : dai->capture.dma_data;
+}
+
+static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai,
+					    const struct snd_pcm_substream *ss,
+					    void *data)
+{
+	if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dai->playback.dma_data = data;
+	else
+		dai->capture.dma_data = data;
+}
+
 #endif
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 5d234a8..a57fbfc 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -375,6 +375,7 @@ struct snd_soc_pcm_stream {
 	unsigned int channels_min;	/* min channels */
 	unsigned int channels_max;	/* max channels */
 	unsigned int active:1;		/* stream is in use */
+	void *dma_data;			/* used by platform code */
 };
 
 /* SoC audio ops */
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 5fb7273..d870a91 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -40,6 +40,16 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
 		  __entry->nr_sector, __entry->errors)
 );
 
+/**
+ * block_rq_abort - abort block operation request
+ * @q: queue containing the block operation request
+ * @rq: block IO operation request
+ *
+ * Called immediately after pending block IO operation request @rq in
+ * queue @q is aborted. The fields in the operation request @rq
+ * can be examined to determine which device and sectors the pending
+ * operation would access.
+ */
 DEFINE_EVENT(block_rq_with_error, block_rq_abort,
 
 	TP_PROTO(struct request_queue *q, struct request *rq),
@@ -47,6 +57,15 @@ DEFINE_EVENT(block_rq_with_error, block_rq_abort,
 	TP_ARGS(q, rq)
 );
 
+/**
+ * block_rq_requeue - place block IO request back on a queue
+ * @q: queue holding operation
+ * @rq: block IO operation request
+ *
+ * The block operation request @rq is being placed back into queue
+ * @q.  For some reason the request was not completed and needs to be
+ * put back in the queue.
+ */
 DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
 
 	TP_PROTO(struct request_queue *q, struct request *rq),
@@ -54,6 +73,17 @@ DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
 	TP_ARGS(q, rq)
 );
 
+/**
+ * block_rq_complete - block IO operation completed by device driver
+ * @q: queue containing the block operation request
+ * @rq: block operations request
+ *
+ * The block_rq_complete tracepoint event indicates that some portion
+ * of operation request has been completed by the device driver.  If
+ * the @rq->bio is %NULL, then there is absolutely no additional work to
+ * do for the request. If @rq->bio is non-NULL then there is
+ * additional work required to complete the request.
+ */
 DEFINE_EVENT(block_rq_with_error, block_rq_complete,
 
 	TP_PROTO(struct request_queue *q, struct request *rq),
@@ -95,6 +125,16 @@ DECLARE_EVENT_CLASS(block_rq,
 		  __entry->nr_sector, __entry->comm)
 );
 
+/**
+ * block_rq_insert - insert block operation request into queue
+ * @q: target queue
+ * @rq: block IO operation request
+ *
+ * Called immediately before block operation request @rq is inserted
+ * into queue @q.  The fields in the operation request @rq struct can
+ * be examined to determine which device and sectors the pending
+ * operation would access.
+ */
 DEFINE_EVENT(block_rq, block_rq_insert,
 
 	TP_PROTO(struct request_queue *q, struct request *rq),
@@ -102,6 +142,14 @@ DEFINE_EVENT(block_rq, block_rq_insert,
 	TP_ARGS(q, rq)
 );
 
+/**
+ * block_rq_issue - issue pending block IO request operation to device driver
+ * @q: queue holding operation
+ * @rq: block IO operation operation request
+ *
+ * Called when block operation request @rq from queue @q is sent to a
+ * device driver for processing.
+ */
 DEFINE_EVENT(block_rq, block_rq_issue,
 
 	TP_PROTO(struct request_queue *q, struct request *rq),
@@ -109,6 +157,17 @@ DEFINE_EVENT(block_rq, block_rq_issue,
 	TP_ARGS(q, rq)
 );
 
+/**
+ * block_bio_bounce - used bounce buffer when processing block operation
+ * @q: queue holding the block operation
+ * @bio: block operation
+ *
+ * A bounce buffer was used to handle the block operation @bio in @q.
+ * This occurs when hardware limitations prevent a direct transfer of
+ * data between the @bio data memory area and the IO device.  Use of a
+ * bounce buffer requires extra copying of data and decreases
+ * performance.
+ */
 TRACE_EVENT(block_bio_bounce,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -138,6 +197,14 @@ TRACE_EVENT(block_bio_bounce,
 		  __entry->nr_sector, __entry->comm)
 );
 
+/**
+ * block_bio_complete - completed all work on the block operation
+ * @q: queue holding the block operation
+ * @bio: block operation completed
+ *
+ * This tracepoint indicates there is no further work to do on this
+ * block IO operation @bio.
+ */
 TRACE_EVENT(block_bio_complete,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -193,6 +260,14 @@ DECLARE_EVENT_CLASS(block_bio,
 		  __entry->nr_sector, __entry->comm)
 );
 
+/**
+ * block_bio_backmerge - merging block operation to the end of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block request @bio to the end of an existing block request
+ * in queue @q.
+ */
 DEFINE_EVENT(block_bio, block_bio_backmerge,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -200,6 +275,14 @@ DEFINE_EVENT(block_bio, block_bio_backmerge,
 	TP_ARGS(q, bio)
 );
 
+/**
+ * block_bio_frontmerge - merging block operation to the beginning of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block IO operation @bio to the beginning of an existing block
+ * operation in queue @q.
+ */
 DEFINE_EVENT(block_bio, block_bio_frontmerge,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -207,6 +290,13 @@ DEFINE_EVENT(block_bio, block_bio_frontmerge,
 	TP_ARGS(q, bio)
 );
 
+/**
+ * block_bio_queue - putting new block IO operation in queue
+ * @q: queue holding operation
+ * @bio: new block operation
+ *
+ * About to place the block IO operation @bio into queue @q.
+ */
 DEFINE_EVENT(block_bio, block_bio_queue,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -243,6 +333,15 @@ DECLARE_EVENT_CLASS(block_get_rq,
 		  __entry->nr_sector, __entry->comm)
 );
 
+/**
+ * block_getrq - get a free request entry in queue for block IO operations
+ * @q: queue for operations
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * A request struct for queue @q has been allocated to handle the
+ * block IO operation @bio.
+ */
 DEFINE_EVENT(block_get_rq, block_getrq,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
@@ -250,6 +349,17 @@ DEFINE_EVENT(block_get_rq, block_getrq,
 	TP_ARGS(q, bio, rw)
 );
 
+/**
+ * block_sleeprq - waiting to get a free request entry in queue for block IO operation
+ * @q: queue for operation
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * In the case where a request struct cannot be provided for queue @q
+ * the process needs to wait for an request struct to become
+ * available.  This tracepoint event is generated each time the
+ * process goes to sleep waiting for request struct become available.
+ */
 DEFINE_EVENT(block_get_rq, block_sleeprq,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
@@ -257,6 +367,14 @@ DEFINE_EVENT(block_get_rq, block_sleeprq,
 	TP_ARGS(q, bio, rw)
 );
 
+/**
+ * block_plug - keep operations requests in request queue
+ * @q: request queue to plug
+ *
+ * Plug the request queue @q.  Do not allow block operation requests
+ * to be sent to the device driver. Instead, accumulate requests in
+ * the queue to improve throughput performance of the block device.
+ */
 TRACE_EVENT(block_plug,
 
 	TP_PROTO(struct request_queue *q),
@@ -293,6 +411,13 @@ DECLARE_EVENT_CLASS(block_unplug,
 	TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
 );
 
+/**
+ * block_unplug_timer - timed release of operations requests in queue to device driver
+ * @q: request queue to unplug
+ *
+ * Unplug the request queue @q because a timer expired and allow block
+ * operation requests to be sent to the device driver.
+ */
 DEFINE_EVENT(block_unplug, block_unplug_timer,
 
 	TP_PROTO(struct request_queue *q),
@@ -300,6 +425,13 @@ DEFINE_EVENT(block_unplug, block_unplug_timer,
 	TP_ARGS(q)
 );
 
+/**
+ * block_unplug_io - release of operations requests in request queue
+ * @q: request queue to unplug
+ *
+ * Unplug request queue @q because device driver is scheduled to work
+ * on elements in the request queue.
+ */
 DEFINE_EVENT(block_unplug, block_unplug_io,
 
 	TP_PROTO(struct request_queue *q),
@@ -307,6 +439,17 @@ DEFINE_EVENT(block_unplug, block_unplug_io,
 	TP_ARGS(q)
 );
 
+/**
+ * block_split - split a single bio struct into two bio structs
+ * @q: queue containing the bio
+ * @bio: block operation being split
+ * @new_sector: The starting sector for the new bio
+ *
+ * The bio request @bio in request queue @q needs to be split into two
+ * bio requests. The newly created @bio request starts at
+ * @new_sector. This split may be required due to hardware limitation
+ * such as operation crossing device boundaries in a RAID system.
+ */
 TRACE_EVENT(block_split,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio,
@@ -337,6 +480,16 @@ TRACE_EVENT(block_split,
 		  __entry->comm)
 );
 
+/**
+ * block_remap - map request for a partition to the raw device
+ * @q: queue holding the operation
+ * @bio: revised operation
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * An operation for a partition on a block device has been mapped to the
+ * raw block device.
+ */
 TRACE_EVENT(block_remap,
 
 	TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
@@ -370,6 +523,17 @@ TRACE_EVENT(block_remap,
 		  (unsigned long long)__entry->old_sector)
 );
 
+/**
+ * block_rq_remap - map request for a block operation request
+ * @q: queue holding the operation
+ * @rq: block IO operation request
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * The block operation request @rq in @q has been remapped.  The block
+ * operation request @rq holds the current information and @from hold
+ * the original sector.
+ */
 TRACE_EVENT(block_rq_remap,
 
 	TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index b9763ba..43e2d7d 100644
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -39,6 +39,7 @@
 #include <linux/mutex.h>
 #include <linux/completion.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/grant_table.h>
 #include <xen/interface/io/xenbus.h>