30 files changed, 116 insertions, 76 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 93b98856007..71d70d1fbce 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -166,6 +166,9 @@ unifdef-y += acct.h
 unifdef-y += adb.h
 unifdef-y += adfs_fs.h
 unifdef-y += agpgart.h
+ifneq ($(wildcard $(srctree)/include/asm-$(SRCARCH)/a.out.h),)
+unifdef-y += a.out.h
+endif
 unifdef-y += apm_bios.h
 unifdef-y += atalk.h
 unifdef-y += atmdev.h
diff --git a/include/linux/a.out.h b/include/linux/a.out.h
index 208f4e8ed30..e86dfca4458 100644
--- a/include/linux/a.out.h
+++ b/include/linux/a.out.h
@@ -1,8 +1,6 @@
 #ifndef __A_OUT_GNU_H__
 #define __A_OUT_GNU_H__
 
-#ifdef CONFIG_ARCH_SUPPORTS_AOUT
-
 #define __GNU_EXEC_MACROS__
 
 #ifndef __STRUCT_EXEC_OVERRIDE__
@@ -277,10 +275,4 @@ struct relocation_info
 #endif /* no N_RELOCATION_INFO_DECLARED.  */
 
 #endif /*__ASSEMBLY__ */
-#else /* CONFIG_ARCH_SUPPORTS_AOUT */
-#ifndef __ASSEMBLY__
-struct exec {
-};
-#endif
-#endif /* CONFIG_ARCH_SUPPORTS_AOUT */
 #endif /* __A_OUT_GNU_H__ */
diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index 661d90d6cf7..972b12bcfb3 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -30,14 +30,6 @@
 #ifndef _AGP_BACKEND_H
 #define _AGP_BACKEND_H 1
 
-#ifndef TRUE
-#define TRUE 1
-#endif
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-
 enum chipset_type {
         NOT_SUPPORTED,
         SUPPORTED,
@@ -57,7 +49,7 @@ struct agp_kern_info {
         size_t aper_size;
         int max_memory;         /* In pages */
         int current_memory;
-        int cant_use_aperture;
+        bool cant_use_aperture;
         unsigned long page_mask;
         struct vm_operations_struct *vm_ops;
 };
@@ -83,9 +75,9 @@ struct agp_memory {
         off_t pg_start;
         u32 type;
         u32 physical;
-        u8 is_bound;
-        u8 is_flushed;
-        u8 vmalloc_flag;
+        bool is_bound;
+        bool is_flushed;
+        bool vmalloc_flag;
 };
 
 #define AGP_NORMAL_MEMORY 0
diff --git a/include/linux/agpgart.h b/include/linux/agpgart.h
index 62aef589eb9..c8fdb6e658e 100644
--- a/include/linux/agpgart.h
+++ b/include/linux/agpgart.h
@@ -206,8 +206,8 @@ struct agp_front_data {
         struct agp_controller *current_controller;
         struct agp_controller *controllers;
         struct agp_file_private *file_priv_list;
-        u8 used_by_controller;
-        u8 backend_acquired;
+        bool used_by_controller;
+        bool backend_acquired;
 };
 
 #endif                          /* __KERNEL__ */
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 63c3bb98558..8b82974bdc1 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -571,7 +571,7 @@ extern void		    audit_log_lost(const char *message);
 extern int                  audit_update_lsm_rules(void);
 
                                 /* Private API (for audit.c only) */
-extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
+extern int audit_filter_user(struct netlink_skb_parms *cb);
 extern int audit_filter_type(int type);
 extern int  audit_receive_filter(int type, int pid, int uid, int seq,
                                 void *data, size_t datasz, uid_t loginuid,
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 6a5dbdc8a7d..686895bacd9 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -94,7 +94,7 @@ extern unsigned long init_bootmem_node(pg_data_t *pgdat,
                                        unsigned long freepfn,
                                        unsigned long startpfn,
                                        unsigned long endpfn);
-extern void reserve_bootmem_node(pg_data_t *pgdat,
+extern int reserve_bootmem_node(pg_data_t *pgdat,
                                  unsigned long physaddr,
                                  unsigned long size,
                                  int flags);
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 51e6b1e520e..dcf77fa826b 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -82,6 +82,7 @@ struct cpuidle_state_kobj {
 };
 
 struct cpuidle_device {
+        unsigned int            registered:1;
         unsigned int            enabled:1;
         unsigned int            cpu;
 
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 2a6639407c8..d982eb89c77 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -300,7 +300,7 @@ extern int d_validate(struct dentry *, struct dentry *);
 extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
 
 extern char *__d_path(const struct path *path, struct path *root, char *, int);
-extern char *d_path(struct path *, char *, int);
+extern char *d_path(const struct path *, char *, int);
 extern char *dentry_path(struct dentry *, char *, int);
 
 /* Allocation counts.. */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d490779f18d..7c108082683 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -894,8 +894,6 @@ static inline int file_check_writeable(struct file *filp)
 typedef struct files_struct *fl_owner_t;
 
 struct file_lock_operations {
-        void (*fl_insert)(struct file_lock *);  /* lock insertion callback */
-        void (*fl_remove)(struct file_lock *);  /* lock removal callback */
         void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
         void (*fl_release_private)(struct file_lock *);
 };
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f8f195c20da..9918772bf27 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -153,7 +153,7 @@ enum {		ide_unknown,	ide_generic,	ide_pci,
                 ide_qd65xx,     ide_umc8672,    ide_ht6560b,
                 ide_rz1000,     ide_trm290,
                 ide_cmd646,     ide_cy82c693,   ide_4drives,
-                ide_pmac,       ide_etrax100,   ide_acorn,
+                ide_pmac,       ide_acorn,
                 ide_au1xxx,     ide_palm3710
 };
 
diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index f1fbe9c930d..d4efe401470 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -41,7 +41,7 @@ struct ip_tunnel_prl {
         __u16                   __reserved;
         __u32                   datalen;
         __u32                   __reserved2;
-        void __user             *data;
+        /* data follows */
 };
 
 /* PRL flags */
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index d5d40a9f792..c6801bffe76 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -53,14 +53,14 @@ struct resource_list {
 #define IORESOURCE_AUTO         0x40000000
 #define IORESOURCE_BUSY         0x80000000      /* Driver has marked this resource busy */
 
-/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
+/* PnP IRQ specific bits (IORESOURCE_BITS) */
 #define IORESOURCE_IRQ_HIGHEDGE         (1<<0)
 #define IORESOURCE_IRQ_LOWEDGE          (1<<1)
 #define IORESOURCE_IRQ_HIGHLEVEL        (1<<2)
 #define IORESOURCE_IRQ_LOWLEVEL         (1<<3)
 #define IORESOURCE_IRQ_SHAREABLE        (1<<4)
 
-/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
+/* PnP DMA specific bits (IORESOURCE_BITS) */
 #define IORESOURCE_DMA_TYPE_MASK        (3<<0)
 #define IORESOURCE_DMA_8BIT             (0<<0)
 #define IORESOURCE_DMA_8AND16BIT        (1<<0)
@@ -76,7 +76,7 @@ struct resource_list {
 #define IORESOURCE_DMA_TYPEB            (2<<6)
 #define IORESOURCE_DMA_TYPEF            (3<<6)
 
-/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
+/* PnP memory I/O specific bits (IORESOURCE_BITS) */
 #define IORESOURCE_MEM_WRITEABLE        (1<<0)  /* dup: IORESOURCE_READONLY */
 #define IORESOURCE_MEM_CACHEABLE        (1<<1)  /* dup: IORESOURCE_CACHEABLE */
 #define IORESOURCE_MEM_RANGELENGTH      (1<<2)  /* dup: IORESOURCE_RANGELENGTH */
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 10b666b61ad..cde056e0818 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -396,8 +396,10 @@ static inline struct request_sock *inet6_reqsk_alloc(struct request_sock_ops *op
 {
         struct request_sock *req = reqsk_alloc(ops);
 
-        if (req != NULL)
+        if (req != NULL) {
                 inet_rsk(req)->inet6_rsk_offset = inet6_rsk_offset(req);
+                inet6_rsk(req)->pktopts = NULL;
+        }
 
         return req;
 }
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 05e2b307161..d147f0f9036 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -919,6 +919,9 @@ struct journal_s
         struct proc_dir_entry   *j_proc_entry;
         struct transaction_stats_s j_stats;
 
+        /* Failed journal commit ID */
+        unsigned int            j_failed_commit;
+
         /*
          * An opaque pointer to fs-private information.  ext3 puts its
          * superblock pointer here
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 398978972b7..de9d1df4bba 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -33,6 +33,7 @@
 #define KVM_REQ_REPORT_TPR_ACCESS  2
 #define KVM_REQ_MMU_RELOAD         3
 #define KVM_REQ_TRIPLE_FAULT       4
+#define KVM_REQ_PENDING_TIMER      5
 
 struct kvm_vcpu;
 extern struct kmem_cache *kvm_vcpu_cache;
@@ -297,7 +298,7 @@ static inline gpa_t gfn_to_gpa(gfn_t gfn)
         return (gpa_t)gfn << PAGE_SHIFT;
 }
 
-static inline void kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
+static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
 {
         set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
 }
diff --git a/include/linux/math64.h b/include/linux/math64.h
index c1a5f81501f..c87f1528703 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -81,4 +81,25 @@ static inline s64 div_s64(s64 dividend, s32 divisor)
 }
 #endif
 
+u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder);
+
+static __always_inline u32
+__iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
+{
+        u32 ret = 0;
+
+        while (dividend >= divisor) {
+                /* The following asm() prevents the compiler from
+                   optimising this loop into a modulo operation.  */
+                asm("" : "+rm"(dividend));
+
+                dividend -= divisor;
+                ret++;
+        }
+
+        *remainder = dividend;
+
+        return ret;
+}
+
 #endif /* _LINUX_MATH64_H */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c31a9cd2a30..586a943cab0 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -760,16 +760,17 @@ unsigned long unmap_vmas(struct mmu_gather **tlb,
  * (see walk_page_range for more details)
  */
 struct mm_walk {
-        int (*pgd_entry)(pgd_t *, unsigned long, unsigned long, void *);
-        int (*pud_entry)(pud_t *, unsigned long, unsigned long, void *);
-        int (*pmd_entry)(pmd_t *, unsigned long, unsigned long, void *);
-        int (*pte_entry)(pte_t *, unsigned long, unsigned long, void *);
-        int (*pte_hole)(unsigned long, unsigned long, void *);
+        int (*pgd_entry)(pgd_t *, unsigned long, unsigned long, struct mm_walk *);
+        int (*pud_entry)(pud_t *, unsigned long, unsigned long, 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 *);
+        struct mm_struct *mm;
+        void *private;
 };
 
-int walk_page_range(const struct mm_struct *, unsigned long addr,
-                    unsigned long end, const struct mm_walk *walk,
-                    void *private);
+int walk_page_range(unsigned long addr, unsigned long end,
+                struct mm_walk *walk);
 void free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
                 unsigned long end, unsigned long floor, unsigned long ceiling);
 void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *start_vma,
diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h
index b03b2745741..81cd36b735b 100644
--- a/include/linux/msdos_fs.h
+++ b/include/linux/msdos_fs.h
@@ -57,12 +57,6 @@
 #define MSDOS_DOT       ".          "   /* ".", padded to MSDOS_NAME chars */
 #define MSDOS_DOTDOT    "..         "   /* "..", padded to MSDOS_NAME chars */
 
-/* media of boot sector */
-static inline int fat_valid_media(u8 media)
-{
-        return 0xf8 <= media || media == 0xf0;
-}
-
 #define FAT_FIRST_ENT(s, x)     ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \
         MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))
 
@@ -334,6 +328,12 @@ static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
 #endif
 }
 
+/* media of boot sector */
+static inline int fat_valid_media(u8 media)
+{
+        return 0xf8 <= media || media == 0xf0;
+}
+
 /* fat/cache.c */
 extern void fat_cache_inval_inode(struct inode *inode);
 extern int fat_get_cluster(struct inode *inode, int cluster,
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 590cff32415..f31debfac92 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -306,5 +306,29 @@ static inline void __ClearPageTail(struct page *page)
 }
 
 #endif /* !PAGEFLAGS_EXTENDED */
+
+#define PAGE_FLAGS      (1 << PG_lru   | 1 << PG_private   | 1 << PG_locked | \
+                         1 << PG_buddy | 1 << PG_writeback | \
+                         1 << PG_slab  | 1 << PG_swapcache | 1 << PG_active)
+
+/*
+ * Flags checked in bad_page().  Pages on the free list should not have
+ * these flags set.  It they are, there is a problem.
+ */
+#define PAGE_FLAGS_CLEAR_WHEN_BAD (PAGE_FLAGS | 1 << PG_reclaim | 1 << PG_dirty)
+
+/*
+ * Flags checked when a page is freed.  Pages being freed should not have
+ * these flags set.  It they are, there is a problem.
+ */
+#define PAGE_FLAGS_CHECK_AT_FREE (PAGE_FLAGS | 1 << PG_reserved)
+
+/*
+ * Flags checked when a page is prepped for return by the page allocator.
+ * Pages being prepped should not have these flags set.  It they are, there
+ * is a problem.
+ */
+#define PAGE_FLAGS_CHECK_AT_PREP (PAGE_FLAGS | 1 << PG_reserved | 1 << PG_dirty)
+
 #endif /* !__GENERATING_BOUNDS_H */
 #endif  /* PAGE_FLAGS_H */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 509159bcd4e..d18b1dd49fa 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -206,6 +206,7 @@ struct pci_dev {
         struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
         int rom_attr_enabled;           /* has display of the rom attribute been enabled? */
         struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
+        struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
 #ifdef CONFIG_PCI_MSI
         struct list_head msi_list;
 #endif
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 9b940e64417..eafc9d6d2b3 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -716,6 +716,7 @@
 #define PCI_DEVICE_ID_HP_CISSA          0x3220
 #define PCI_DEVICE_ID_HP_CISSC          0x3230
 #define PCI_DEVICE_ID_HP_CISSD          0x3238
+#define PCI_DEVICE_ID_HP_CISSE          0x323a
 #define PCI_DEVICE_ID_HP_ZX2_IOC        0x4031
 
 #define PCI_VENDOR_ID_PCTECH            0x1042
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 9883bc94226..fff1d27ddb4 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -9,6 +9,8 @@
 
 struct net;
 struct completion;
+struct mm_struct;
+
 /*
  * The proc filesystem constants/structures
  */
@@ -101,8 +103,6 @@ extern spinlock_t proc_subdir_lock;
 extern void proc_root_init(void);
 extern void proc_misc_init(void);
 
-struct mm_struct;
-
 void proc_flush_task(struct task_struct *task);
 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index a2aec2c0cfb..b358c704d10 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -246,6 +246,7 @@ enum rt_class_t
 {
         RT_TABLE_UNSPEC=0,
 /* User defined values */
+        RT_TABLE_COMPAT=252,
         RT_TABLE_DEFAULT=253,
         RT_TABLE_MAIN=254,
         RT_TABLE_LOCAL=255,
diff --git a/include/linux/sched.h b/include/linux/sched.h
index ae0be3c6237..c5d3f847ca8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2026,6 +2026,19 @@ static inline int fatal_signal_pending(struct task_struct *p)
         return signal_pending(p) && __fatal_signal_pending(p);
 }
 
+static inline int signal_pending_state(long state, struct task_struct *p)
+{
+        if (!(state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
+                return 0;
+        if (!signal_pending(p))
+                return 0;
+
+        if (state & (__TASK_STOPPED | __TASK_TRACED))
+                return 0;
+
+        return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
+}
+
 static inline int need_resched(void)
 {
         return unlikely(test_thread_flag(TIF_NEED_RESCHED));
diff --git a/include/linux/ssb/ssb_driver_gige.h b/include/linux/ssb/ssb_driver_gige.h
index 01fbdf5fef2..942e3873690 100644
--- a/include/linux/ssb/ssb_driver_gige.h
+++ b/include/linux/ssb/ssb_driver_gige.h
@@ -100,7 +100,7 @@ extern char * nvram_get(const char *name);
 /* Get the device MAC address */
 static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
 {
-#ifdef CONFIG_BCM947XX
+#ifdef CONFIG_BCM47XX
         char *res = nvram_get("et0macaddr");
         if (res)
                 memcpy(macaddr, res, 6);
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 18e62e3d406..b31b6b74aa2 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -239,11 +239,6 @@ static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req)
         return (struct tcp_request_sock *)req;
 }
 
-struct tcp_deferred_accept_info {
-        struct sock *listen_sk;
-        struct request_sock *request;
-};
-
 struct tcp_sock {
         /* inet_connection_sock has to be the first member of tcp_sock */
         struct inet_connection_sock     inet_conn;
@@ -379,8 +374,6 @@ struct tcp_sock {
         unsigned int            keepalive_intvl;  /* time interval between keep alive probes */
         int                     linger2;
 
-        struct tcp_deferred_accept_info defer_tcp_accept;
-
         unsigned long last_synq_overflow; 
 
         u32     tso_deferred;
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 06d3e6eb9ca..917707e6151 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -66,8 +66,7 @@ struct thermal_cooling_device {
                                 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
 #define CELSIUS_TO_KELVIN(t)    ((t)*10+2732)
 
-#if defined(CONFIG_HWMON) ||    \
-        (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE))
+#if defined(CONFIG_THERMAL_HWMON)
 /* thermal zone devices with the same type share one hwmon device */
 struct thermal_hwmon_device {
         char type[THERMAL_NAME_LENGTH];
@@ -94,8 +93,7 @@ struct thermal_zone_device {
         struct idr idr;
         struct mutex lock;      /* protect cooling devices list */
         struct list_head node;
-#if defined(CONFIG_HWMON) ||    \
-        (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE))
+#if defined(CONFIG_THERMAL_HWMON)
         struct list_head hwmon_node;
         struct thermal_hwmon_device *hwmon;
         struct thermal_hwmon_attr temp_input;   /* hwmon sys attr */
diff --git a/include/linux/time.h b/include/linux/time.h
index d32ef0ad4c0..e15206a7e82 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -6,6 +6,7 @@
 #ifdef __KERNEL__
 # include <linux/cache.h>
 # include <linux/seqlock.h>
+# include <linux/math64.h>
 #endif
 
 #ifndef _STRUCT_TIMESPEC
@@ -169,18 +170,13 @@ extern struct timeval ns_to_timeval(const s64 nsec);
  * timespec_add_ns - Adds nanoseconds to a timespec
  * @a:          pointer to timespec to be incremented
  * @ns:         unsigned nanoseconds value to be added
+ *
+ * This must always be inlined because its used from the x86-64 vdso,
+ * which cannot call other kernel functions.
  */
-static inline void timespec_add_ns(struct timespec *a, u64 ns)
+static __always_inline void timespec_add_ns(struct timespec *a, u64 ns)
 {
-        ns += a->tv_nsec;
-        while(unlikely(ns >= NSEC_PER_SEC)) {
-                /* The following asm() prevents the compiler from
-                 * optimising this loop into a modulo operation.  */
-                asm("" : "+r"(ns));
-
-                ns -= NSEC_PER_SEC;
-                a->tv_sec++;
-        }
+        a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
         a->tv_nsec = ns;
 }
 #endif /* __KERNEL__ */
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 59f1c0bd8f9..d2a00358676 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -27,8 +27,7 @@
  *      This routine is called by the kernel to write a series of
  *      characters to the tty device.  The characters may come from
  *      user space or kernel space.  This routine will return the
- *      number of characters actually accepted for writing.  This
- *      routine is mandatory.
+ *      number of characters actually accepted for writing.
  *
  *      Optional: Required for writable devices.
  *
@@ -134,7 +133,7 @@
  *      This routine notifies the tty driver that it should hangup the
  *      tty device.
  *
- *      Required:
+ *      Optional:
  *
  * void (*break_ctl)(struct tty_stuct *tty, int state);
  *
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h
index 9405aa6cdf2..38c0571820f 100644
--- a/include/linux/virtio_net.h
+++ b/include/linux/virtio_net.h
@@ -38,7 +38,7 @@ struct virtio_net_hdr
 #define VIRTIO_NET_HDR_GSO_ECN          0x80    // TCP has ECN set
         __u8 gso_type;
         __u16 hdr_len;          /* Ethernet + IP + tcp/udp hdrs */
-        __u16 gso_size;         /* Bytes to append to gso_hdr_len per frame */
+        __u16 gso_size;         /* Bytes to append to hdr_len per frame */
         __u16 csum_start;       /* Position to start checksumming from */
         __u16 csum_offset;      /* Offset after that to place checksum */
 };