17 files changed, 170 insertions, 116 deletions

diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index f88eacb111d4..7c05ac202d90 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -10,6 +10,12 @@
 #include "osdmap.h"
 #include "messenger.h"
 
+/* 
+ * Maximum object name size 
+ * (must be at least as big as RBD_MAX_MD_NAME_LEN -- currently 100) 
+ */
+#define MAX_OBJ_NAME_SIZE 100
+
 struct ceph_msg;
 struct ceph_snap_context;
 struct ceph_osd_request;
@@ -75,7 +81,7 @@ struct ceph_osd_request {
         struct inode *r_inode;                /* for use by callbacks */
         void *r_priv;                         /* ditto */
 
-        char              r_oid[40];          /* object name */
+        char              r_oid[MAX_OBJ_NAME_SIZE];          /* object name */
         int               r_oid_len;
         unsigned long     r_stamp;            /* send OR check time */
 
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 139c4db55f17..c86c940d1de3 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -156,6 +156,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
  * @mult:               cycle to nanosecond multiplier
  * @shift:              cycle to nanosecond divisor (power of two)
  * @max_idle_ns:        max idle time permitted by the clocksource (nsecs)
+ * @maxadj              maximum adjustment value to mult (~11%)
  * @flags:              flags describing special properties
  * @archdata:           arch-specific data
  * @suspend:            suspend function for the clocksource, if necessary
@@ -172,7 +173,7 @@ struct clocksource {
         u32 mult;
         u32 shift;
         u64 max_idle_ns;
-
+        u32 maxadj;
 #ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
         struct arch_clocksource_data archdata;
 #endif
diff --git a/include/linux/device.h b/include/linux/device.h
index 52b3a4111df9..3136ede5a1e1 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -69,7 +69,7 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
  * @resume:     Called to bring a device on this bus out of sleep mode.
  * @pm:         Power management operations of this bus, callback the specific
  *              device driver's pm-ops.
- * @iommu_ops   IOMMU specific operations for this bus, used to attach IOMMU
+ * @iommu_ops:  IOMMU specific operations for this bus, used to attach IOMMU
  *              driver implementations to a bus and allow the driver to do
  *              bus-specific setup
  * @p:          The private data of the driver core, only the driver core can
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index a81bf6d23b3e..07d103a06d64 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -432,9 +432,6 @@ void i2c_unlock_adapter(struct i2c_adapter *);
 /* Internal numbers to terminate lists */
 #define I2C_CLIENT_END          0xfffeU
 
-/* The numbers to use to set I2C bus address */
-#define ANY_I2C_BUS             0xffff
-
 /* Construct an I2C_CLIENT_END-terminated array of i2c addresses */
 #define I2C_ADDRS(addr, addrs...) \
         ((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END })
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 08ffab01e76c..94b1e356c02a 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -184,7 +184,6 @@ extern struct cred init_cred;
                 [PIDTYPE_SID]  = INIT_PID_LINK(PIDTYPE_SID),            \
         },                                                              \
         .thread_group   = LIST_HEAD_INIT(tsk.thread_group),             \
-        .dirties = INIT_PROP_LOCAL_SINGLE(dirties),                     \
         INIT_IDS                                                        \
         INIT_PERF_EVENTS(tsk)                                           \
         INIT_TRACE_IRQFLAGS                                             \
diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h
index 82b4c8801a4f..8bf2cb9502dd 100644
--- a/include/linux/mfd/tps65910.h
+++ b/include/linux/mfd/tps65910.h
@@ -243,7 +243,8 @@
 
 
 /*Registers VDD1, VDD2 voltage values definitions */
-#define VDD1_2_NUM_VOLTS                                73
+#define VDD1_2_NUM_VOLT_FINE                            73
+#define VDD1_2_NUM_VOLT_COARSE                          3
 #define VDD1_2_MIN_VOLT                                 6000
 #define VDD1_2_OFFSET                                   125
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 21440e31fdab..eef257c76a40 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2552,6 +2552,8 @@ extern void		net_disable_timestamp(void);
 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
 extern void dev_seq_stop(struct seq_file *seq, void *v);
+extern int dev_seq_open_ops(struct inode *inode, struct file *file,
+                            const struct seq_operations *ops);
 #endif
 
 extern int netdev_class_create_file(struct class_attribute *class_attr);
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index ab2c6343361a..92ecf5585fac 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -410,6 +410,9 @@ extern const struct inode_operations nfs_file_inode_operations;
 extern const struct inode_operations nfs3_file_inode_operations;
 #endif /* CONFIG_NFS_V3 */
 extern const struct file_operations nfs_file_operations;
+#ifdef CONFIG_NFS_V4
+extern const struct file_operations nfs4_file_operations;
+#endif /* CONFIG_NFS_V4 */
 extern const struct address_space_operations nfs_file_aops;
 extern const struct address_space_operations nfs_dir_aops;
 
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index c74595ba7094..2a7c533be5dd 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1192,6 +1192,7 @@ struct nfs_rpc_ops {
         const struct dentry_operations *dentry_ops;
         const struct inode_operations *dir_inode_ops;
         const struct inode_operations *file_inode_ops;
+        const struct file_operations *file_ops;
 
         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
                             struct nfs_fsinfo *);
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index e3d0b3890249..7ef68724f0f0 100644
--- a/include/linux/pci-ats.h
+++ b/include/linux/pci-ats.h
@@ -12,7 +12,7 @@ struct pci_ats {
         unsigned int is_enabled:1;      /* Enable bit is set */
 };
 
-#ifdef CONFIG_PCI_IOV
+#ifdef CONFIG_PCI_ATS
 
 extern int pci_enable_ats(struct pci_dev *dev, int ps);
 extern void pci_disable_ats(struct pci_dev *dev);
@@ -29,7 +29,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev)
         return dev->ats && dev->ats->is_enabled;
 }
 
-#else /* CONFIG_PCI_IOV */
+#else /* CONFIG_PCI_ATS */
 
 static inline int pci_enable_ats(struct pci_dev *dev, int ps)
 {
@@ -50,7 +50,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev)
         return 0;
 }
 
-#endif /* CONFIG_PCI_IOV */
+#endif /* CONFIG_PCI_ATS */
 
 #ifdef CONFIG_PCI_PRI
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 337df0d5d5f7..7cda65b5f798 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -338,7 +338,7 @@ struct pci_dev {
         struct list_head msi_list;
 #endif
         struct pci_vpd *vpd;
-#ifdef CONFIG_PCI_IOV
+#ifdef CONFIG_PCI_ATS
         union {
                 struct pci_sriov *sriov;        /* SR-IOV capability related */
                 struct pci_dev *physfn; /* the PF this VF is associated with */
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 5c4c8b18c8b7..3f3ed83a9aa5 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -54,118 +54,145 @@ typedef struct pm_message {
 /**
  * struct dev_pm_ops - device PM callbacks
  *
- * Several driver power state transitions are externally visible, affecting
+ * Several device power state transitions are externally visible, affecting
  * the state of pending I/O queues and (for drivers that touch hardware)
  * interrupts, wakeups, DMA, and other hardware state.  There may also be
- * internal transitions to various low power modes, which are transparent
+ * internal transitions to various low-power modes which are transparent
  * to the rest of the driver stack (such as a driver that's ON gating off
  * clocks which are not in active use).
  *
- * The externally visible transitions are handled with the help of the following
- * callbacks included in this structure:
- *
- * @prepare: Prepare the device for the upcoming transition, but do NOT change
- *      its hardware state.  Prevent new children of the device from being
- *      registered after @prepare() returns (the driver's subsystem and
- *      generally the rest of the kernel is supposed to prevent new calls to the
- *      probe method from being made too once @prepare() has succeeded).  If
- *      @prepare() detects a situation it cannot handle (e.g. registration of a
- *      child already in progress), it may return -EAGAIN, so that the PM core
- *      can execute it once again (e.g. after the new child has been registered)
- *      to recover from the race condition.  This method is executed for all
- *      kinds of suspend transitions and is followed by one of the suspend
- *      callbacks: @suspend(), @freeze(), or @poweroff().
- *      The PM core executes @prepare() for all devices before starting to
- *      execute suspend callbacks for any of them, so drivers may assume all of
- *      the other devices to be present and functional while @prepare() is being
- *      executed.  In particular, it is safe to make GFP_KERNEL memory
- *      allocations from within @prepare().  However, drivers may NOT assume
- *      anything about the availability of the user space at that time and it
- *      is not correct to request firmware from within @prepare() (it's too
- *      late to do that).  [To work around this limitation, drivers may
- *      register suspend and hibernation notifiers that are executed before the
- *      freezing of tasks.]
+ * The externally visible transitions are handled with the help of callbacks
+ * included in this structure in such a way that two levels of callbacks are
+ * involved.  First, the PM core executes callbacks provided by PM domains,
+ * device types, classes and bus types.  They are the subsystem-level callbacks
+ * supposed to execute callbacks provided by device drivers, although they may
+ * choose not to do that.  If the driver callbacks are executed, they have to
+ * collaborate with the subsystem-level callbacks to achieve the goals
+ * appropriate for the given system transition, given transition phase and the
+ * subsystem the device belongs to.
+ *
+ * @prepare: The principal role of this callback is to prevent new children of
+ *      the device from being registered after it has returned (the driver's
+ *      subsystem and generally the rest of the kernel is supposed to prevent
+ *      new calls to the probe method from being made too once @prepare() has
+ *      succeeded).  If @prepare() detects a situation it cannot handle (e.g.
+ *      registration of a child already in progress), it may return -EAGAIN, so
+ *      that the PM core can execute it once again (e.g. after a new child has
+ *      been registered) to recover from the race condition.
+ *      This method is executed for all kinds of suspend transitions and is
+ *      followed by one of the suspend callbacks: @suspend(), @freeze(), or
+ *      @poweroff().  The PM core executes subsystem-level @prepare() for all
+ *      devices before starting to invoke suspend callbacks for any of them, so
+ *      generally devices may be assumed to be functional or to respond to
+ *      runtime resume requests while @prepare() is being executed.  However,
+ *      device drivers may NOT assume anything about the availability of user
+ *      space at that time and it is NOT valid to request firmware from within
+ *      @prepare() (it's too late to do that).  It also is NOT valid to allocate
+ *      substantial amounts of memory from @prepare() in the GFP_KERNEL mode.
+ *      [To work around these limitations, drivers may register suspend and
+ *      hibernation notifiers to be executed before the freezing of tasks.]
  *
  * @complete: Undo the changes made by @prepare().  This method is executed for
  *      all kinds of resume transitions, following one of the resume callbacks:
  *      @resume(), @thaw(), @restore().  Also called if the state transition
- *      fails before the driver's suspend callback (@suspend(), @freeze(),
- *      @poweroff()) can be executed (e.g. if the suspend callback fails for one
+ *      fails before the driver's suspend callback: @suspend(), @freeze() or
+ *      @poweroff(), can be executed (e.g. if the suspend callback fails for one
  *      of the other devices that the PM core has unsuccessfully attempted to
  *      suspend earlier).
- *      The PM core executes @complete() after it has executed the appropriate
- *      resume callback for all devices.
+ *      The PM core executes subsystem-level @complete() after it has executed
+ *      the appropriate resume callbacks for all devices.
  *
  * @suspend: Executed before putting the system into a sleep state in which the
- *      contents of main memory are preserved.  Quiesce the device, put it into
- *      a low power state appropriate for the upcoming system state (such as
- *      PCI_D3hot), and enable wakeup events as appropriate.
+ *      contents of main memory are preserved.  The exact action to perform
+ *      depends on the device's subsystem (PM domain, device type, class or bus
+ *      type), but generally the device must be quiescent after subsystem-level
+ *      @suspend() has returned, so that it doesn't do any I/O or DMA.
+ *      Subsystem-level @suspend() is executed for all devices after invoking
+ *      subsystem-level @prepare() for all of them.
  *
  * @resume: Executed after waking the system up from a sleep state in which the
- *      contents of main memory were preserved.  Put the device into the
- *      appropriate state, according to the information saved in memory by the
- *      preceding @suspend().  The driver starts working again, responding to
- *      hardware events and software requests.  The hardware may have gone
- *      through a power-off reset, or it may have maintained state from the
- *      previous suspend() which the driver may rely on while resuming.  On most
- *      platforms, there are no restrictions on availability of resources like
- *      clocks during @resume().
+ *      contents of main memory were preserved.  The exact action to perform
+ *      depends on the device's subsystem, but generally the driver is expected
+ *      to start working again, responding to hardware events and software
+ *      requests (the device itself may be left in a low-power state, waiting
+ *      for a runtime resume to occur).  The state of the device at the time its
+ *      driver's @resume() callback is run depends on the platform and subsystem
+ *      the device belongs to.  On most platforms, there are no restrictions on
+ *      availability of resources like clocks during @resume().
+ *      Subsystem-level @resume() is executed for all devices after invoking
+ *      subsystem-level @resume_noirq() for all of them.
  *
  * @freeze: Hibernation-specific, executed before creating a hibernation image.
- *      Quiesce operations so that a consistent image can be created, but do NOT
- *      otherwise put the device into a low power device state and do NOT emit
- *      system wakeup events.  Save in main memory the device settings to be
- *      used by @restore() during the subsequent resume from hibernation or by
- *      the subsequent @thaw(), if the creation of the image or the restoration
- *      of main memory contents from it fails.
+ *      Analogous to @suspend(), but it should not enable the device to signal
+ *      wakeup events or change its power state.  The majority of subsystems
+ *      (with the notable exception of the PCI bus type) expect the driver-level
+ *      @freeze() to save the device settings in memory to be used by @restore()
+ *      during the subsequent resume from hibernation.
+ *      Subsystem-level @freeze() is executed for all devices after invoking
+ *      subsystem-level @prepare() for all of them.
  *
  * @thaw: Hibernation-specific, executed after creating a hibernation image OR
- *      if the creation of the image fails.  Also executed after a failing
+ *      if the creation of an image has failed.  Also executed after a failing
  *      attempt to restore the contents of main memory from such an image.
  *      Undo the changes made by the preceding @freeze(), so the device can be
  *      operated in the same way as immediately before the call to @freeze().
+ *      Subsystem-level @thaw() is executed for all devices after invoking
+ *      subsystem-level @thaw_noirq() for all of them.  It also may be executed
+ *      directly after @freeze() in case of a transition error.
  *
  * @poweroff: Hibernation-specific, executed after saving a hibernation image.
- *      Quiesce the device, put it into a low power state appropriate for the
- *      upcoming system state (such as PCI_D3hot), and enable wakeup events as
- *      appropriate.
+ *      Analogous to @suspend(), but it need not save the device's settings in
+ *      memory.
+ *      Subsystem-level @poweroff() is executed for all devices after invoking
+ *      subsystem-level @prepare() for all of them.
  *
  * @restore: Hibernation-specific, executed after restoring the contents of main
- *      memory from a hibernation image.  Driver starts working again,
- *      responding to hardware events and software requests.  Drivers may NOT
- *      make ANY assumptions about the hardware state right prior to @restore().
- *      On most platforms, there are no restrictions on availability of
- *      resources like clocks during @restore().
- *
- * @suspend_noirq: Complete the operations of ->suspend() by carrying out any
- *      actions required for suspending the device that need interrupts to be
- *      disabled
- *
- * @resume_noirq: Prepare for the execution of ->resume() by carrying out any
- *      actions required for resuming the device that need interrupts to be
- *      disabled
- *
- * @freeze_noirq: Complete the operations of ->freeze() by carrying out any
- *      actions required for freezing the device that need interrupts to be
- *      disabled
- *
- * @thaw_noirq: Prepare for the execution of ->thaw() by carrying out any
- *      actions required for thawing the device that need interrupts to be
- *      disabled
- *
- * @poweroff_noirq: Complete the operations of ->poweroff() by carrying out any
- *      actions required for handling the device that need interrupts to be
- *      disabled
- *
- * @restore_noirq: Prepare for the execution of ->restore() by carrying out any
- *      actions required for restoring the operations of the device that need
- *      interrupts to be disabled
+ *      memory from a hibernation image, analogous to @resume().
+ *
+ * @suspend_noirq: Complete the actions started by @suspend().  Carry out any
+ *      additional operations required for suspending the device that might be
+ *      racing with its driver's interrupt handler, which is guaranteed not to
+ *      run while @suspend_noirq() is being executed.
+ *      It generally is expected that the device will be in a low-power state
+ *      (appropriate for the target system sleep state) after subsystem-level
+ *      @suspend_noirq() has returned successfully.  If the device can generate
+ *      system wakeup signals and is enabled to wake up the system, it should be
+ *      configured to do so at that time.  However, depending on the platform
+ *      and device's subsystem, @suspend() may be allowed to put the device into
+ *      the low-power state and configure it to generate wakeup signals, in
+ *      which case it generally is not necessary to define @suspend_noirq().
+ *
+ * @resume_noirq: Prepare for the execution of @resume() by carrying out any
+ *      operations required for resuming the device that might be racing with
+ *      its driver's interrupt handler, which is guaranteed not to run while
+ *      @resume_noirq() is being executed.
+ *
+ * @freeze_noirq: Complete the actions started by @freeze().  Carry out any
+ *      additional operations required for freezing the device that might be
+ *      racing with its driver's interrupt handler, which is guaranteed not to
+ *      run while @freeze_noirq() is being executed.
+ *      The power state of the device should not be changed by either @freeze()
+ *      or @freeze_noirq() and it should not be configured to signal system
+ *      wakeup by any of these callbacks.
+ *
+ * @thaw_noirq: Prepare for the execution of @thaw() by carrying out any
+ *      operations required for thawing the device that might be racing with its
+ *      driver's interrupt handler, which is guaranteed not to run while
+ *      @thaw_noirq() is being executed.
+ *
+ * @poweroff_noirq: Complete the actions started by @poweroff().  Analogous to
+ *      @suspend_noirq(), but it need not save the device's settings in memory.
+ *
+ * @restore_noirq: Prepare for the execution of @restore() by carrying out any
+ *      operations required for thawing the device that might be racing with its
+ *      driver's interrupt handler, which is guaranteed not to run while
+ *      @restore_noirq() is being executed.  Analogous to @resume_noirq().
  *
  * All of the above callbacks, except for @complete(), return error codes.
  * However, the error codes returned by the resume operations, @resume(),
- * @thaw(), @restore(), @resume_noirq(), @thaw_noirq(), and @restore_noirq() do
+ * @thaw(), @restore(), @resume_noirq(), @thaw_noirq(), and @restore_noirq(), do
  * not cause the PM core to abort the resume transition during which they are
- * returned.  The error codes returned in that cases are only printed by the PM
+ * returned.  The error codes returned in those cases are only printed by the PM
  * core to the system logs for debugging purposes.  Still, it is recommended
  * that drivers only return error codes from their resume methods in case of an
  * unrecoverable failure (i.e. when the device being handled refuses to resume
@@ -174,31 +201,43 @@ typedef struct pm_message {
  * their children.
  *
  * It is allowed to unregister devices while the above callbacks are being
- * executed.  However, it is not allowed to unregister a device from within any
- * of its own callbacks.
+ * executed.  However, a callback routine must NOT try to unregister the device
+ * it was called for, although it may unregister children of that device (for
+ * example, if it detects that a child was unplugged while the system was
+ * asleep).
+ *
+ * Refer to Documentation/power/devices.txt for more information about the role
+ * of the above callbacks in the system suspend process.
  *
- * There also are the following callbacks related to run-time power management
- * of devices:
+ * There also are callbacks related to runtime power management of devices.
+ * Again, these callbacks are executed by the PM core only for subsystems
+ * (PM domains, device types, classes and bus types) and the subsystem-level
+ * callbacks are supposed to invoke the driver callbacks.  Moreover, the exact
+ * actions to be performed by a device driver's callbacks generally depend on
+ * the platform and subsystem the device belongs to.
  *
  * @runtime_suspend: Prepare the device for a condition in which it won't be
  *      able to communicate with the CPU(s) and RAM due to power management.
- *      This need not mean that the device should be put into a low power state.
+ *      This need not mean that the device should be put into a low-power state.
  *      For example, if the device is behind a link which is about to be turned
  *      off, the device may remain at full power.  If the device does go to low
- *      power and is capable of generating run-time wake-up events, remote
- *      wake-up (i.e., a hardware mechanism allowing the device to request a
- *      change of its power state via a wake-up event, such as PCI PME) should
- *      be enabled for it.
+ *      power and is capable of generating runtime wakeup events, remote wakeup
+ *      (i.e., a hardware mechanism allowing the device to request a change of
+ *      its power state via an interrupt) should be enabled for it.
  *
  * @runtime_resume: Put the device into the fully active state in response to a
- *      wake-up event generated by hardware or at the request of software.  If
- *      necessary, put the device into the full power state and restore its
+ *      wakeup event generated by hardware or at the request of software.  If
+ *      necessary, put the device into the full-power state and restore its
  *      registers, so that it is fully operational.
  *
- * @runtime_idle: Device appears to be inactive and it might be put into a low
- *      power state if all of the necessary conditions are satisfied.  Check
+ * @runtime_idle: Device appears to be inactive and it might be put into a
+ *      low-power state if all of the necessary conditions are satisfied.  Check
  *      these conditions and handle the device as appropriate, possibly queueing
  *      a suspend request for it.  The return value is ignored by the PM core.
+ *
+ * Refer to Documentation/power/runtime_pm.txt for more information about the
+ * role of the above callbacks in device runtime power management.
+ *
  */
 
 struct dev_pm_ops {
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index ea567321ae3c..2ca8cde5459d 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -35,10 +35,12 @@ struct pstore_info {
         spinlock_t      buf_lock;       /* serialize access to 'buf' */
         char            *buf;
         size_t          bufsize;
+        struct mutex    read_mutex;     /* serialize open/read/close */
         int             (*open)(struct pstore_info *psi);
         int             (*close)(struct pstore_info *psi);
         ssize_t         (*read)(u64 *id, enum pstore_type_id *type,
-                        struct timespec *time, struct pstore_info *psi);
+                        struct timespec *time, char **buf,
+                        struct pstore_info *psi);
         int             (*write)(enum pstore_type_id type, u64 *id,
                         unsigned int part, size_t size, struct pstore_info *psi);
         int             (*erase)(enum pstore_type_id type, u64 id,
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 68daf4f27e2c..1c4f3e9b9bc5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1521,7 +1521,6 @@ struct task_struct {
 #ifdef CONFIG_FAULT_INJECTION
         int make_it_fail;
 #endif
-        struct prop_local_single dirties;
         /*
          * when (nr_dirtied >= nr_dirtied_pause), it's time to call
          * balance_dirty_pages() for some dirty throttling pause
diff --git a/include/linux/serial.h b/include/linux/serial.h
index 97ff8e27a6cc..3d86517fe7d5 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -207,13 +207,15 @@ struct serial_icounter_struct {
 
 struct serial_rs485 {
         __u32   flags;                  /* RS485 feature flags */
-#define SER_RS485_ENABLED               (1 << 0)
-#define SER_RS485_RTS_ON_SEND           (1 << 1)
-#define SER_RS485_RTS_AFTER_SEND        (1 << 2)
-#define SER_RS485_RTS_BEFORE_SEND       (1 << 3)
+#define SER_RS485_ENABLED               (1 << 0)        /* If enabled */
+#define SER_RS485_RTS_ON_SEND           (1 << 1)        /* Logical level for
+                                                           RTS pin when
+                                                           sending */
+#define SER_RS485_RTS_AFTER_SEND        (1 << 2)        /* Logical level for
+                                                           RTS pin after sent*/
 #define SER_RS485_RX_DURING_TX          (1 << 4)
-        __u32   delay_rts_before_send;  /* Milliseconds */
-        __u32   delay_rts_after_send;   /* Milliseconds */
+        __u32   delay_rts_before_send;  /* Delay before send (milliseconds) */
+        __u32   delay_rts_after_send;   /* Delay after send (milliseconds) */
         __u32   padding[5];             /* Memory is cheap, new structs
                                            are a royal PITA .. */
 };
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 63f98d0a8efa..5206d6541da5 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -85,6 +85,8 @@
  * @reset: reset the device
  *      vdev: the virtio device
  *      After this, status and feature negotiation must be done again
+ *      Device must not be reset from its vq/config callbacks, or in
+ *      parallel with being added/removed.
  * @find_vqs: find virtqueues and instantiate them.
  *      vdev: the virtio_device
  *      nvqs: the number of virtqueues to find
diff --git a/include/linux/virtio_mmio.h b/include/linux/virtio_mmio.h
index 27c7edefbc86..5c7b6f0daef8 100644
--- a/include/linux/virtio_mmio.h
+++ b/include/linux/virtio_mmio.h
@@ -63,7 +63,7 @@
 #define VIRTIO_MMIO_GUEST_FEATURES      0x020
 
 /* Activated features set selector - Write Only */
-#define VIRTIO_MMIO_GUEST_FEATURES_SET  0x024
+#define VIRTIO_MMIO_GUEST_FEATURES_SEL  0x024
 
 /* Guest's memory page size in bytes - Write Only */
 #define VIRTIO_MMIO_GUEST_PAGE_SIZE     0x028