Merge branch 'sched/urgent' into sched/core

5 files changed, 145 insertions, 7 deletions

diff --git a/Documentation/cciss.txt b/Documentation/cciss.txt
index 8244c6442faa..89698e8df7d4 100644
--- a/Documentation/cciss.txt
+++ b/Documentation/cciss.txt
@@ -21,11 +21,14 @@ This driver is known to work with the following cards:
 	* SA E200
 	* SA E200i
 	* SA E500
+	* SA P700m
 	* SA P212
 	* SA P410
 	* SA P410i
 	* SA P411
 	* SA P812
+	* SA P712m
+	* SA P711m
 
 Detecting drive failures:
 -------------------------
diff --git a/Documentation/email-clients.txt b/Documentation/email-clients.txt
index 2ebb94d6ed8e..a618efab7b15 100644
--- a/Documentation/email-clients.txt
+++ b/Documentation/email-clients.txt
@@ -213,4 +213,29 @@ TkRat (GUI)
 
 Works.  Use "Insert file..." or external editor.
 
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Gmail (Web GUI)
+
+If you just have to use Gmail to send patches, it CAN be made to work.  It
+requires a bit of external help, though.
+
+The first problem is that Gmail converts tabs to spaces.  This will
+totally break your patches.  To prevent this, you have to use a different
+editor.  There is a firefox extension called "ViewSourceWith"
+(https://addons.mozilla.org/en-US/firefox/addon/394) which allows you to
+edit any text box in the editor of your choice.  Configure it to launch
+your favorite editor.  When you want to send a patch, use this technique.
+Once you have crafted your messsage + patch, save and exit the editor,
+which should reload the Gmail edit box.  GMAIL WILL PRESERVE THE TABS.
+Hoorah.  Apparently you can cut-n-paste literal tabs, but Gmail will
+convert those to spaces upon sending!
+
+The second problem is that Gmail converts tabs to spaces on replies.  If
+you reply to a patch, don't expect to be able to apply it as a patch.
+
+The last problem is that Gmail will base64-encode any message that has a
+non-ASCII character.  That includes things like European names.  Be aware.
+
+Gmail is not convenient for lkml patches, but CAN be made to work.
+
                                 ###
diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index bbac4f1d9056..3a5ddc96901a 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -8,6 +8,12 @@ if you want to format from within Linux.
 
 VFAT MOUNT OPTIONS
 ----------------------------------------------------------------------
+uid=###       -- Set the owner of all files on this filesystem.
+		 The default is the uid of current process.
+
+gid=###       -- Set the group of all files on this filesystem.
+		 The default is the gid of current process.
+
 umask=###     -- The permission mask (for files and directories, see umask(1)).
                  The default is the umask of current process.
 
@@ -36,7 +42,7 @@ codepage=###  -- Sets the codepage number for converting to shortname
 		 characters on FAT filesystem.
 		 By default, FAT_DEFAULT_CODEPAGE setting is used.
 
-iocharset=name -- Character set to use for converting between the
+iocharset=<name> -- Character set to use for converting between the
 		 encoding is used for user visible filename and 16 bit
 		 Unicode characters. Long filenames are stored on disk
 		 in Unicode format, but Unix for the most part doesn't
@@ -86,6 +92,8 @@ check=s|r|n   -- Case sensitivity checking setting.
                  r: relaxed, case insensitive
                  n: normal, default setting, currently case insensitive
 
+nocase        -- This was deprecated for vfat. Use shortname=win95 instead.
+
 shortname=lower|win95|winnt|mixed
 	      -- Shortname display/create setting.
 		 lower: convert to lowercase for display,
@@ -99,11 +107,31 @@ shortname=lower|win95|winnt|mixed
 tz=UTC        -- Interpret timestamps as UTC rather than local time.
                  This option disables the conversion of timestamps
                  between local time (as used by Windows on FAT) and UTC
-                 (which Linux uses internally).  This is particuluarly
+                 (which Linux uses internally).  This is particularly
                  useful when mounting devices (like digital cameras)
                  that are set to UTC in order to avoid the pitfalls of
                  local time.
 
+showexec      -- If set, the execute permission bits of the file will be
+		 allowed only if the extension part of the name is .EXE,
+		 .COM, or .BAT. Not set by default.
+
+debug         -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as
+		 IMMUTABLE flag on Linux. Not set by default.
+
+flush         -- If set, the filesystem will try to flush to disk more
+		 early than normal. Not set by default.
+
+rodir	      -- FAT has the ATTR_RO (read-only) attribute. But on Windows,
+		 the ATTR_RO of the directory will be just ignored actually,
+		 and is used by only applications as flag. E.g. it's setted
+		 for the customized folder.
+
+		 If you want to use ATTR_RO as read-only flag even for
+		 the directory, set this option.
+
 <bool>: 0,1,yes,no,true,false
 
 TODO
diff --git a/Documentation/io-mapping.txt b/Documentation/io-mapping.txt
new file mode 100644
index 000000000000..473e43b2d588
--- /dev/null
+++ b/Documentation/io-mapping.txt
@@ -0,0 +1,82 @@
+The io_mapping functions in linux/io-mapping.h provide an abstraction for
+efficiently mapping small regions of an I/O device to the CPU. The initial
+usage is to support the large graphics aperture on 32-bit processors where
+ioremap_wc cannot be used to statically map the entire aperture to the CPU
+as it would consume too much of the kernel address space.
+
+A mapping object is created during driver initialization using
+
+	struct io_mapping *io_mapping_create_wc(unsigned long base,
+						unsigned long size)
+
+		'base' is the bus address of the region to be made
+		mappable, while 'size' indicates how large a mapping region to
+		enable. Both are in bytes.
+
+		This _wc variant provides a mapping which may only be used
+		with the io_mapping_map_atomic_wc or io_mapping_map_wc.
+
+With this mapping object, individual pages can be mapped either atomically
+or not, depending on the necessary scheduling environment. Of course, atomic
+maps are more efficient:
+
+	void *io_mapping_map_atomic_wc(struct io_mapping *mapping,
+				       unsigned long offset)
+
+		'offset' is the offset within the defined mapping region.
+		Accessing addresses beyond the region specified in the
+		creation function yields undefined results. Using an offset
+		which is not page aligned yields an undefined result. The
+		return value points to a single page in CPU address space.
+
+		This _wc variant returns a write-combining map to the
+		page and may only be used with mappings created by
+		io_mapping_create_wc
+
+		Note that the task may not sleep while holding this page
+		mapped.
+
+	void io_mapping_unmap_atomic(void *vaddr)
+
+		'vaddr' must be the the value returned by the last
+		io_mapping_map_atomic_wc call. This unmaps the specified
+		page and allows the task to sleep once again.
+
+If you need to sleep while holding the lock, you can use the non-atomic
+variant, although they may be significantly slower.
+
+	void *io_mapping_map_wc(struct io_mapping *mapping,
+				unsigned long offset)
+
+		This works like io_mapping_map_atomic_wc except it allows
+		the task to sleep while holding the page mapped.
+
+	void io_mapping_unmap(void *vaddr)
+
+		This works like io_mapping_unmap_atomic, except it is used
+		for pages mapped with io_mapping_map_wc.
+
+At driver close time, the io_mapping object must be freed:
+
+	void io_mapping_free(struct io_mapping *mapping)
+
+Current Implementation:
+
+The initial implementation of these functions uses existing mapping
+mechanisms and so provides only an abstraction layer and no new
+functionality.
+
+On 64-bit processors, io_mapping_create_wc calls ioremap_wc for the whole
+range, creating a permanent kernel-visible mapping to the resource. The
+map_atomic and map functions add the requested offset to the base of the
+virtual address returned by ioremap_wc.
+
+On 32-bit processors with HIGHMEM defined, io_mapping_map_atomic_wc uses
+kmap_atomic_pfn to map the specified page in an atomic fashion;
+kmap_atomic_pfn isn't really supposed to be used with device pages, but it
+provides an efficient mapping for this usage.
+
+On 32-bit processors without HIGHMEM defined, io_mapping_map_atomic_wc and
+io_mapping_map_wc both use ioremap_wc, a terribly inefficient function which
+performs an IPI to inform all processors about the new mapping. This results
+in a significant performance penalty.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1bbcaa8982b6..c86c07459712 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -995,13 +995,15 @@ and is between 256 and 4096 characters. It is defined in the file
 			Format:
 			<cpu number>,...,<cpu number>
 			or
-			<cpu number>-<cpu number>  (must be a positive range in ascending order)
+			<cpu number>-<cpu number>
+			(must be a positive range in ascending order)
 			or a mixture
 			<cpu number>,...,<cpu number>-<cpu number>
+
 			This option can be used to specify one or more CPUs
 			to isolate from the general SMP balancing and scheduling
-			algorithms. The only way to move a process onto or off
-			an "isolated" CPU is via the CPU affinity syscalls.
+			algorithms. You can move a process onto or off an
+			"isolated" CPU via the CPU affinity syscalls or cpuset.
 			<cpu number> begins at 0 and the maximum value is
 			"number of CPUs in system - 1".
 
@@ -1470,8 +1472,6 @@ and is between 256 and 4096 characters. It is defined in the file
 			Valid arguments: on, off
 			Default: on
 
-	noirqbalance	[X86-32,SMP,KNL] Disable kernel irq balancing
-
 	noirqdebug	[X86-32] Disables the code which attempts to detect and
 			disable unhandled interrupt sources.