diff --git a/Documentation/cgroup-v1/memory.txt b/Documentation/cgroup-v1/memory.txt
index ff71e16..b14abf2 100644
--- a/Documentation/cgroup-v1/memory.txt
+++ b/Documentation/cgroup-v1/memory.txt
@@ -280,17 +280,9 @@
 different than user memory, since it can't be swapped out, which makes it
 possible to DoS the system by consuming too much of this precious resource.
 
-Kernel memory won't be accounted at all until limit on a group is set. This
-allows for existing setups to continue working without disruption.  The limit
-cannot be set if the cgroup have children, or if there are already tasks in the
-cgroup. Attempting to set the limit under those conditions will return -EBUSY.
-When use_hierarchy == 1 and a group is accounted, its children will
-automatically be accounted regardless of their limit value.
-
-After a group is first limited, it will be kept being accounted until it
-is removed. The memory limitation itself, can of course be removed by writing
--1 to memory.kmem.limit_in_bytes. In this case, kmem will be accounted, but not
-limited.
+Kernel memory accounting is enabled for all memory cgroups by default. But
+it can be disabled system-wide by passing cgroup.memory=nokmem to the kernel
+at boot time. In this case, kernel memory will not be accounted at all.
 
 Kernel memory limits are not imposed for the root cgroup. Usage for the root
 cgroup may or may not be accounted. The memory used is accumulated into
diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 3970151..da193e0 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -48,8 +48,8 @@
 
 	port->mctrl
 	port->icount
-	info->xmit.head (circ->head)
-	info->xmit.tail (circ->tail)
+	port->state->xmit.head (circ_buf->head)
+	port->state->xmit.tail (circ_buf->tail)
 
 The low level driver is free to use this lock to provide any additional
 locking.
@@ -57,7 +57,7 @@
 The port_sem semaphore is used to protect against ports being added/
 removed or reconfigured at inappropriate times. Since v2.6.27, this
 semaphore has been the 'mutex' member of the tty_port struct, and
-commonly referred to as the port mutex (or port->mutex).
+commonly referred to as the port mutex.
 
 
 uart_ops
@@ -186,7 +186,7 @@
 	should be terminated when another call is made with a zero
 	ctl.
 
-	Locking: caller holds port->mutex
+	Locking: caller holds tty_port->mutex
 
   startup(port)
 	Grab any interrupt resources and initialise any low level driver
@@ -204,7 +204,7 @@
 	RTS nor DTR; this will have already been done via a separate
 	call to set_mctrl.
 
-	Drivers must not access port->info once this call has completed.
+	Drivers must not access port->state once this call has completed.
 
 	This method will only be called when there are no more users of
 	this port.
@@ -216,7 +216,7 @@
 	Flush any write buffers, reset any DMA state and stop any
 	ongoing DMA transfers.
 
-	This will be called whenever the port->info->xmit circular
+	This will be called whenever the port->state->xmit circular
 	buffer is cleared.
 
 	Locking: port->lock taken.
@@ -262,14 +262,14 @@
 	Other flags may be used (eg, xon/xoff characters) if your
 	hardware supports hardware "soft" flow control.
 
-	Locking: caller holds port->mutex
+	Locking: caller holds tty_port->mutex
 	Interrupts: caller dependent.
 	This call must not sleep
 
   set_ldisc(port,termios)
 	Notifier for discipline change. See Documentation/serial/tty.txt.
 
-	Locking: caller holds port->mutex
+	Locking: caller holds tty_port->mutex
 
   pm(port,state,oldstate)
 	Perform any power management related activities on the specified
diff --git a/Documentation/vm/hugetlbpage.txt b/Documentation/vm/hugetlbpage.txt
index b7a3f6d..59cbc80 100644
--- a/Documentation/vm/hugetlbpage.txt
+++ b/Documentation/vm/hugetlbpage.txt
@@ -275,10 +275,10 @@
 options sets the owner and group of the root of the file system.  By default
 the uid and gid of the current process are taken.  The mode option sets the
 mode of root of file system to value & 01777.  This value is given in octal.
-By default the value 0755 is picked. If the paltform supports multiple huge
+By default the value 0755 is picked. If the platform supports multiple huge
 page sizes, the pagesize option can be used to specify the huge page size and
 associated pool.  pagesize is specified in bytes.  If pagesize is not specified
-the paltform's default huge page size and associated pool will be used. The
+the platform's default huge page size and associated pool will be used. The
 size option sets the maximum value of memory (huge pages) allowed for that
 filesystem (/mnt/huge).  The size option can be specified in bytes, or as a
 percentage of the specified huge page pool (nr_hugepages).  The size is