Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6

Pull documentation updates from Jonathan Corbet:
 "Numerous fixes, the overdue removal of the i2o docs, some new Chinese
  translations, and, hopefully, the README fix that will end the flow of
  identical patches to that file"

* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (34 commits)
  Documentation/memcg: update memcg/kmem status
  Documentation: blackfin: Makefile: Typo building issue
  Documentation/vm/pagemap.txt: correct location of page-types tool
  Documentation/memory-barriers.txt: typo fix
  doc: Add guest_nice column to example output of `cat /proc/stat'
  Documentation/kernel-parameters: Move "eagerfpu" to its right place
  Documentation: gpio: Update ACPI part of the document to mention _DSD
  docs/completion.txt: Various tweaks and corrections
  doc: completion: context, scope and language fixes
  Documentation:Update Documentation/zh_CN/arm64/memory.txt
  Documentation:Update Documentation/zh_CN/arm64/booting.txt
  Documentation: Chinese translation of arm64/legacy_instructions.txt
  DocBook media: fix broken EIA hyperlink
  Documentation: tweak the maintainers entry
  README: Change gzip/bzip2 to xz compression format
  README: Update version number reference
  doc:pci: Fix typo in Documentation/PCI
  Documentation: drm: Use '->' when describing access through pointers.
  Documentation: Remove mentioning of block barriers
  Documentation/email-clients.txt: Fix one grammar mistake, add extra info about TB
  ...

36 files changed, 467 insertions, 743 deletions

diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index 4d4f06d47e06..f4b78eafd92a 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -13,7 +13,7 @@ and NOT read it.  Burn them, it's a great symbolic gesture.
 Anyway, here goes:
 
 
-	 	Chapter 1: Indentation
+		Chapter 1: Indentation
 
 Tabs are 8 characters, and thus indentations are also 8 characters.
 There are heretic movements that try to make indentations 4 (or even 2!)
@@ -56,7 +56,6 @@ instead of "double-indenting" the "case" labels.  E.g.:
 		break;
 	}
 
-
 Don't put multiple statements on a single line unless you have
 something to hide:
 
@@ -156,25 +155,25 @@ comments on.
 
 Do not unnecessarily use braces where a single statement will do.
 
-if (condition)
-	action();
+	if (condition)
+		action();
 
 and
 
-if (condition)
-	do_this();
-else
-	do_that();
+	if (condition)
+		do_this();
+	else
+		do_that();
 
 This does not apply if only one branch of a conditional statement is a single
 statement; in the latter case use braces in both branches:
 
-if (condition) {
-	do_this();
-	do_that();
-} else {
-	otherwise();
-}
+	if (condition) {
+		do_this();
+		do_that();
+	} else {
+		otherwise();
+	}
 
 		3.1:  Spaces
 
@@ -186,8 +185,11 @@ although they are not required in the language, as in: "sizeof info" after
 "struct fileinfo info;" is declared).
 
 So use a space after these keywords:
+
 	if, switch, case, for, do, while
+
 but not with sizeof, typeof, alignof, or __attribute__.  E.g.,
+
 	s = sizeof(struct file);
 
 Do not add spaces around (inside) parenthesized expressions.  This example is
@@ -209,12 +211,15 @@ such as any of these:
 	=  +  -  <  >  *  /  %  |  &  ^  <=  >=  ==  !=  ?  :
 
 but no space after unary operators:
+
 	&  *  +  -  ~  !  sizeof  typeof  alignof  __attribute__  defined
 
 no space before the postfix increment & decrement unary operators:
+
 	++  --
 
 no space after the prefix increment & decrement unary operators:
+
 	++  --
 
 and no space around the '.' and "->" structure member operators.
@@ -268,13 +273,11 @@ See chapter 6 (Functions).
 		Chapter 5: Typedefs
 
 Please don't use things like "vps_t".
-
 It's a _mistake_ to use typedef for structures and pointers. When you see a
 
 	vps_t a;
 
 in the source, what does it mean?
-
 In contrast, if it says
 
 	struct virtual_container *a;
@@ -372,11 +375,11 @@ In source files, separate functions with one blank line.  If the function is
 exported, the EXPORT* macro for it should follow immediately after the closing
 function brace line.  E.g.:
 
-int system_is_up(void)
-{
-	return system_state == SYSTEM_RUNNING;
-}
-EXPORT_SYMBOL(system_is_up);
+	int system_is_up(void)
+	{
+		return system_state == SYSTEM_RUNNING;
+	}
+	EXPORT_SYMBOL(system_is_up);
 
 In function prototypes, include parameter names with their data types.
 Although this is not required by the C language, it is preferred in Linux
@@ -405,34 +408,34 @@ The rationale for using gotos is:
     modifications are prevented
 - saves the compiler work to optimize redundant code away ;)
 
-int fun(int a)
-{
-	int result = 0;
-	char *buffer;
-
-	buffer = kmalloc(SIZE, GFP_KERNEL);
-	if (!buffer)
-		return -ENOMEM;
-
-	if (condition1) {
-		while (loop1) {
-			...
+	int fun(int a)
+	{
+		int result = 0;
+		char *buffer;
+
+		buffer = kmalloc(SIZE, GFP_KERNEL);
+		if (!buffer)
+			return -ENOMEM;
+
+		if (condition1) {
+			while (loop1) {
+				...
+			}
+			result = 1;
+			goto out_buffer;
 		}
-		result = 1;
-		goto out_buffer;
+		...
+	out_buffer:
+		kfree(buffer);
+		return result;
 	}
-	...
-out_buffer:
-	kfree(buffer);
-	return result;
-}
 
 A common type of bug to be aware of it "one err bugs" which look like this:
 
-err:
-	kfree(foo->bar);
-	kfree(foo);
-	return ret;
+	err:
+		kfree(foo->bar);
+		kfree(foo);
+		return ret;
 
 The bug in this code is that on some exit paths "foo" is NULL.  Normally the
 fix for this is to split it up into two error labels "err_bar:" and "err_foo:".
@@ -503,9 +506,9 @@ values.  To do the latter, you can stick the following in your .emacs file:
 (defun c-lineup-arglist-tabs-only (ignored)
   "Line up argument lists by tabs, not spaces"
   (let* ((anchor (c-langelem-pos c-syntactic-element))
-	 (column (c-langelem-2nd-pos c-syntactic-element))
-	 (offset (- (1+ column) anchor))
-	 (steps (floor offset c-basic-offset)))
+         (column (c-langelem-2nd-pos c-syntactic-element))
+         (offset (- (1+ column) anchor))
+         (steps (floor offset c-basic-offset)))
     (* (max steps 1)
        c-basic-offset)))
 
@@ -612,7 +615,7 @@ have a reference count on it, you almost certainly have a bug.
 
 Names of macros defining constants and labels in enums are capitalized.
 
-#define CONSTANT 0x12345
+	#define CONSTANT 0x12345
 
 Enums are preferred when defining several related constants.
 
@@ -623,28 +626,28 @@ Generally, inline functions are preferable to macros resembling functions.
 
 Macros with multiple statements should be enclosed in a do - while block:
 
-#define macrofun(a, b, c) 			\
-	do {					\
-		if (a == 5)			\
-			do_this(b, c);		\
-	} while (0)
+	#define macrofun(a, b, c) 			\
+		do {					\
+			if (a == 5)			\
+				do_this(b, c);		\
+		} while (0)
 
 Things to avoid when using macros:
 
 1) macros that affect control flow:
 
-#define FOO(x)					\
-	do {					\
-		if (blah(x) < 0)		\
-			return -EBUGGERED;	\
-	} while(0)
+	#define FOO(x)					\
+		do {					\
+			if (blah(x) < 0)		\
+				return -EBUGGERED;	\
+		} while(0)
 
 is a _very_ bad idea.  It looks like a function call but exits the "calling"
 function; don't break the internal parsers of those who will read the code.
 
 2) macros that depend on having a local variable with a magic name:
 
-#define FOO(val) bar(index, val)
+	#define FOO(val) bar(index, val)
 
 might look like a good thing, but it's confusing as hell when one reads the
 code and it's prone to breakage from seemingly innocent changes.
@@ -656,8 +659,8 @@ bite you if somebody e.g. turns FOO into an inline function.
 must enclose the expression in parentheses. Beware of similar issues with
 macros using parameters.
 
-#define CONSTANT 0x4000
-#define CONSTEXP (CONSTANT | 3)
+	#define CONSTANT 0x4000
+	#define CONSTEXP (CONSTANT | 3)
 
 5) namespace collisions when defining local variables in macros resembling
 functions:
@@ -809,11 +812,11 @@ you should use, rather than explicitly coding some variant of them yourself.
 For example, if you need to calculate the length of an array, take advantage
 of the macro
 
-  #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+	#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
 Similarly, if you need to calculate the size of some structure member, use
 
-  #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+	#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 
 There are also min() and max() macros that do strict type checking if you
 need them.  Feel free to peruse that header file to see what else is already
@@ -826,19 +829,19 @@ Some editors can interpret configuration information embedded in source files,
 indicated with special markers.  For example, emacs interprets lines marked
 like this:
 
--*- mode: c -*-
+	-*- mode: c -*-
 
 Or like this:
 
-/*
-Local Variables:
-compile-command: "gcc -DMAGIC_DEBUG_FLAG foo.c"
-End:
-*/
+	/*
+	Local Variables:
+	compile-command: "gcc -DMAGIC_DEBUG_FLAG foo.c"
+	End:
+	*/
 
 Vim interprets markers that look like this:
 
-/* vim:set sw=8 noet */
+	/* vim:set sw=8 noet */
 
 Do not include any of these in source files.  People have their own personal
 editor configurations, and your source files should not override them.  This
@@ -915,9 +918,9 @@ At the end of any non-trivial #if or #ifdef block (more than a few lines),
 place a comment after the #endif on the same line, noting the conditional
 expression used.  For instance:
 
-#ifdef CONFIG_SOMETHING
-...
-#endif /* CONFIG_SOMETHING */
+	#ifdef CONFIG_SOMETHING
+	...
+	#endif /* CONFIG_SOMETHING */
 
 
 		Appendix I: References
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 03f1985a4bd1..0cad3ce957ff 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -1293,7 +1293,7 @@ int max_width, max_height;</synopsis>
           </para>
           <para>
             If a page flip can be successfully scheduled the driver must set the
-            <code>drm_crtc-&lt;fb</code> field to the new framebuffer pointed to
+            <code>drm_crtc-&gt;fb</code> field to the new framebuffer pointed to
             by <code>fb</code>. This is important so that the reference counting
             on framebuffers stays balanced.
           </para>
diff --git a/Documentation/DocBook/media/v4l/biblio.xml b/Documentation/DocBook/media/v4l/biblio.xml
index 7ff01a23c2fe..fdee6b3f3eca 100644
--- a/Documentation/DocBook/media/v4l/biblio.xml
+++ b/Documentation/DocBook/media/v4l/biblio.xml
@@ -1,14 +1,13 @@
   <bibliography>
     <title>References</title>
 
-    <biblioentry id="eia608">
-      <abbrev>EIA&nbsp;608-B</abbrev>
+    <biblioentry id="cea608">
+      <abbrev>CEA&nbsp;608-E</abbrev>
       <authorgroup>
-	<corpauthor>Electronic Industries Alliance (<ulink
-url="http://www.eia.org">http://www.eia.org</ulink>)</corpauthor>
+	<corpauthor>Consumer Electronics Association (<ulink
+url="http://www.ce.org">http://www.ce.org</ulink>)</corpauthor>
       </authorgroup>
-      <title>EIA 608-B "Recommended Practice for Line 21 Data
-Service"</title>
+      <title>CEA-608-E R-2014 "Line 21 Data Services"</title>
     </biblioentry>
 
     <biblioentry id="en300294">
diff --git a/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
index 7a8bf3011ee9..0aec62ed2bf8 100644
--- a/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
+++ b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
@@ -254,7 +254,7 @@ ETS&nbsp;300&nbsp;231, lsb first transmitted.</entry>
 	  <row>
 	    <entry><constant>V4L2_SLICED_CAPTION_525</constant></entry>
 	    <entry>0x1000</entry>
-	    <entry><xref linkend="eia608" /></entry>
+	    <entry><xref linkend="cea608" /></entry>
 	    <entry>NTSC line 21, 284 (second field 21)</entry>
 	    <entry>Two bytes in transmission order, including parity
 bit, lsb first transmitted.</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml
index bd015d1563ff..d05623c55403 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml
@@ -205,7 +205,7 @@ ETS&nbsp;300&nbsp;231, lsb first transmitted.</entry>
 	  <row>
 	    <entry><constant>V4L2_SLICED_CAPTION_525</constant></entry>
 	    <entry>0x1000</entry>
-	    <entry><xref linkend="eia608" /></entry>
+	    <entry><xref linkend="cea608" /></entry>
 	    <entry>NTSC line 21, 284 (second field 21)</entry>
 	    <entry>Two bytes in transmission order, including parity
 bit, lsb first transmitted.</entry>
diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt
index 0d920d54536d..1179850f453c 100644
--- a/Documentation/PCI/MSI-HOWTO.txt
+++ b/Documentation/PCI/MSI-HOWTO.txt
@@ -353,7 +353,7 @@ retry:
 	rc = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
 				   maxvec, maxvec);
 	/*
-	 * -ENOSPC is the only error code allowed to be analized
+	 * -ENOSPC is the only error code allowed to be analyzed
 	 */
 	if (rc == -ENOSPC) {
 		if (maxvec == 1)
@@ -370,7 +370,7 @@ retry:
 	return rc;
 }
 
-Note how pci_enable_msix_range() return value is analized for a fallback -
+Note how pci_enable_msix_range() return value is analyzed for a fallback -
 any error code other than -ENOSPC indicates a fatal error and should not
 be retried.
 
@@ -486,7 +486,7 @@ during development.
 If your device supports both MSI-X and MSI capabilities, you should use
 the MSI-X facilities in preference to the MSI facilities.  As mentioned
 above, MSI-X supports any number of interrupts between 1 and 2048.
-In constrast, MSI is restricted to a maximum of 32 interrupts (and
+In contrast, MSI is restricted to a maximum of 32 interrupts (and
 must be a power of two).  In addition, the MSI interrupt vectors must
 be allocated consecutively, so the system might not be able to allocate
 as many vectors for MSI as it could for MSI-X.  On some platforms, MSI
@@ -501,18 +501,9 @@ necessary to disable interrupts (Linux guarantees the same interrupt will
 not be re-entered).  If a device uses multiple interrupts, the driver
 must disable interrupts while the lock is held.  If the device sends
 a different interrupt, the driver will deadlock trying to recursively
-acquire the spinlock.
-
-There are two solutions.  The first is to take the lock with
-spin_lock_irqsave() or spin_lock_irq() (see
-Documentation/DocBook/kernel-locking).  The second is to specify
-IRQF_DISABLED to request_irq() so that the kernel runs the entire
-interrupt routine with interrupts disabled.
-
-If your MSI interrupt routine does not hold the lock for the whole time
-it is running, the first solution may be best.  The second solution is
-normally preferred as it avoids making two transitions from interrupt
-disabled to enabled and back again.
+acquire the spinlock.  Such deadlocks can be avoided by using
+spin_lock_irqsave() or spin_lock_irq() which disable local interrupts
+and acquire the lock (see Documentation/DocBook/kernel-locking).
 
 4.6 How to tell whether MSI/MSI-X is enabled on a device
 
diff --git a/Documentation/PCI/pci-error-recovery.txt b/Documentation/PCI/pci-error-recovery.txt
index 898ded24510d..ac26869c7db4 100644
--- a/Documentation/PCI/pci-error-recovery.txt
+++ b/Documentation/PCI/pci-error-recovery.txt
@@ -256,7 +256,7 @@ STEP 4: Slot Reset
 ------------------
 
 In response to a return value of PCI_ERS_RESULT_NEED_RESET, the
-the platform will peform a slot reset on the requesting PCI device(s). 
+the platform will perform a slot reset on the requesting PCI device(s). 
 The actual steps taken by a platform to perform a slot reset
 will be platform-dependent. Upon completion of slot reset, the
 platform will call the device slot_reset() callback.
diff --git a/Documentation/PCI/pcieaer-howto.txt b/Documentation/PCI/pcieaer-howto.txt
index 26d3d945c3c2..b4987c0bcb20 100644
--- a/Documentation/PCI/pcieaer-howto.txt
+++ b/Documentation/PCI/pcieaer-howto.txt
@@ -66,8 +66,8 @@ hardware (mostly chipsets) has root ports that cannot obtain the reporting
 source ID. nosourceid=n by default.
 
 2.3 AER error output
-When a PCI-E AER error is captured, an error message will be outputed to
-console. If it's a correctable error, it is outputed as a warning.
+When a PCI-E AER error is captured, an error message will be outputted to
+console. If it's a correctable error, it is outputted as a warning.
 Otherwise, it is printed as an error. So users could choose different
 log level to filter out correctable error messages.
 
diff --git a/Documentation/arm/Booting b/Documentation/arm/Booting
index 371814a36719..83c1df2fc758 100644
--- a/Documentation/arm/Booting
+++ b/Documentation/arm/Booting
@@ -58,13 +58,18 @@ serial format options as described in
 --------------------------
 
 Existing boot loaders:		OPTIONAL
-New boot loaders:		MANDATORY
+New boot loaders:		MANDATORY except for DT-only platforms
 
 The boot loader should detect the machine type its running on by some
 method.  Whether this is a hard coded value or some algorithm that
 looks at the connected hardware is beyond the scope of this document.
 The boot loader must ultimately be able to provide a MACH_TYPE_xxx
-value to the kernel. (see linux/arch/arm/tools/mach-types).
+value to the kernel. (see linux/arch/arm/tools/mach-types).  This
+should be passed to the kernel in register r1.
+
+For DT-only platforms, the machine type will be determined by device
+tree.  set the machine type to all ones (~0).  This is not strictly
+necessary, but assures that it will not match any existing types.
 
 4. Setup boot data
 ------------------
diff --git a/Documentation/arm/README b/Documentation/arm/README
index aea34095cdcf..9d1e5b2c92e6 100644
--- a/Documentation/arm/README
+++ b/Documentation/arm/README
@@ -185,13 +185,20 @@ Kernel entry (head.S)
   board devices are used, or the device is setup, and provides that
   machine specific "personality."
 
-  This fine-grained machine specific selection is controlled by the machine
-  type ID, which acts both as a run-time and a compile-time code selection
-  method.
+  For platforms that support device tree (DT), the machine selection is
+  controlled at runtime by passing the device tree blob to the kernel.  At
+  compile-time, support for the machine type must be selected.  This allows for
+  a single multiplatform kernel build to be used for several machine types.
 
-  You can register a new machine via the web site at:
+  For platforms that do not use device tree, this machine selection is
+  controlled by the machine type ID, which acts both as a run-time and a
+  compile-time code selection method.  You can register a new machine via the
+  web site at:
 
     <http://www.arm.linux.org.uk/developer/machines/>
 
+  Note: Please do not register a machine type for DT-only platforms.  If your
+  platform is DT-only, you do not need a registered machine type.
+
 ---
 Russell King (15/03/2004)
diff --git a/Documentation/blackfin/Makefile b/Documentation/blackfin/Makefile
index 03f78059d6f5..6782c58fbc29 100644
--- a/Documentation/blackfin/Makefile
+++ b/Documentation/blackfin/Makefile
@@ -1,5 +1,5 @@
 ifneq ($(CONFIG_BLACKFIN),)
-ifneq ($(CONFIG_BFIN_GPTIMERS,)
+ifneq ($(CONFIG_BFIN_GPTIMERS),)
 obj-m := gptimers-example.o
 endif
 endif
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 5aabc08de811..fd12c0d835fd 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -48,8 +48,7 @@ Description of Contents:
 	- Highmem I/O support
 	- I/O scheduler modularization
   1.2 Tuning based on high level requirements/capabilities
-	1.2.1 I/O Barriers
-	1.2.2 Request Priority/Latency
+	1.2.1 Request Priority/Latency
   1.3 Direct access/bypass to lower layers for diagnostics and special
       device operations
 	1.3.1 Pre-built commands
@@ -255,29 +254,12 @@ some control over i/o ordering.
 What kind of support exists at the generic block layer for this ?
 
 The flags and rw fields in the bio structure can be used for some tuning
-from above e.g indicating that an i/o is just a readahead request, or for
-marking  barrier requests (discussed next), or priority settings (currently
-unused). As far as user applications are concerned they would need an
-additional mechanism either via open flags or ioctls, or some other upper
-level mechanism to communicate such settings to block.
-
-1.2.1 I/O Barriers
-
-There is a way to enforce strict ordering for i/os through barriers.
-All requests before a barrier point must be serviced before the barrier
-request and any other requests arriving after the barrier will not be
-serviced until after the barrier has completed. This is useful for higher
-level control on write ordering, e.g flushing a log of committed updates
-to disk before the corresponding updates themselves.
-
-A flag in the bio structure, BIO_BARRIER is used to identify a barrier i/o.
-The generic i/o scheduler would make sure that it places the barrier request and
-all other requests coming after it after all the previous requests in the
-queue. Barriers may be implemented in different ways depending on the
-driver. For more details regarding I/O barriers, please read barrier.txt
-in this directory.
-
-1.2.2 Request Priority/Latency
+from above e.g indicating that an i/o is just a readahead request, or priority
+settings (currently unused). As far as user applications are concerned they
+would need an additional mechanism either via open flags or ioctls, or some
+other upper level mechanism to communicate such settings to block.
+
+1.2.1 Request Priority/Latency
 
 Todo/Under discussion:
 Arjan's proposed request priority scheme allows higher levels some broad
@@ -906,8 +888,8 @@ queue and specific I/O schedulers.  Unless stated otherwise, elevator is used
 to refer to both parts and I/O scheduler to specific I/O schedulers.
 
 Block layer implements generic dispatch queue in block/*.c.
-The generic dispatch queue is responsible for properly ordering barrier
-requests, requeueing, handling non-fs requests and all other subtleties.
+The generic dispatch queue is responsible for requeueing, handling non-fs
+requests and all other subtleties.
 
 Specific I/O schedulers are responsible for ordering normal filesystem
 requests.  They can also choose to delay certain requests to improve
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index a22df3ad35ff..f456b4315e86 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -275,11 +275,6 @@ When oom event notifier is registered, event will be delivered.
 
 2.7 Kernel Memory Extension (CONFIG_MEMCG_KMEM)
 
-WARNING: Current implementation lacks reclaim support. That means allocation
-	 attempts will fail when close to the limit even if there are plenty of
-	 kmem available for reclaim. That makes this option unusable in real
-	 life so DO NOT SELECT IT unless for development purposes.
-
 With the Kernel memory extension, the Memory Controller is able to limit
 the amount of kernel memory used by the system. Kernel memory is fundamentally
 different than user memory, since it can't be swapped out, which makes it
@@ -345,6 +340,9 @@ set:
     In this case, the admin could set up K so that the sum of all groups is
     never greater than the total memory, and freely set U at the cost of his
     QoS.
+    WARNING: In the current implementation, memory reclaim will NOT be
+    triggered for a cgroup when it hits K while staying below U, which makes
+    this setup impractical.
 
     U != 0, K >= U:
     Since kmem charges will also be fed to the user counter and reclaim will be
diff --git a/Documentation/email-clients.txt b/Documentation/email-clients.txt
index eede6088f978..c7d49b885559 100644
--- a/Documentation/email-clients.txt
+++ b/Documentation/email-clients.txt
@@ -211,7 +211,7 @@ Thunderbird (GUI)
 Thunderbird is an Outlook clone that likes to mangle text, but there are ways
 to coerce it into behaving.
 
-- Allows use of an external editor:
+- Allow use of an external editor:
   The easiest thing to do with Thunderbird and patches is to use an
   "external editor" extension and then just use your favorite $EDITOR
   for reading/merging patches into the body text.  To do this, download
@@ -219,6 +219,15 @@ to coerce it into behaving.
   View->Toolbars->Customize... and finally just click on it when in the
   Compose dialog.
 
+  Please note that "external editor" requires that your editor must not
+  fork, or in other words, the editor must not return before closing. 
+  You may have to pass additional flags or change the settings of your
+  editor. Most notably if you are using gvim then you must pass the -f
+  option to gvim by putting "/usr/bin/gvim -f" (if the binary is in
+  /usr/bin) to the text editor field in "external editor" settings. If you
+  are using some other editor then please read its manual to find out how
+  to do this.
+
 To beat some sense out of the internal editor, do this:
 
 - Edit your Thunderbird config settings so that it won't use format=flowed.
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 8e36c7e3c345..c3b6b301d8b0 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1260,9 +1260,9 @@ Various pieces   of  information about  kernel activity  are  available in the
 since the system first booted.  For a quick look, simply cat the file:
 
   > cat /proc/stat
-  cpu  2255 34 2290 22625563 6290 127 456 0 0
-  cpu0 1132 34 1441 11311718 3675 127 438 0 0
-  cpu1 1123 0 849 11313845 2614 0 18 0 0
+  cpu  2255 34 2290 22625563 6290 127 456 0 0 0
+  cpu0 1132 34 1441 11311718 3675 127 438 0 0 0
+  cpu1 1123 0 849 11313845 2614 0 18 0 0 0
   intr 114930548 113199788 3 0 5 263 0 4 [... lots more numbers ...]
   ctxt 1990473
   btime 1062191376
diff --git a/Documentation/gpio/board.txt b/Documentation/gpio/board.txt
index 8b35f51fe7b6..b80606de545a 100644
--- a/Documentation/gpio/board.txt
+++ b/Documentation/gpio/board.txt
@@ -50,10 +50,43 @@ gpiod_is_active_low(power) will be true).
 
 ACPI
 ----
-ACPI does not support function names for GPIOs. Therefore, only the "idx"
-argument of gpiod_get_index() is useful to discriminate between GPIOs assigned
-to a device. The "con_id" argument can still be set for debugging purposes (it
-will appear under error messages as well as debug and sysfs nodes).
+ACPI also supports function names for GPIOs in a similar fashion t