---

yaml
---
r: 23960
b: refs/heads/master
c: 53846a2
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1ebbe2b20091d306453a5cf480a87e6cd28ae76f
+refs/heads/master: 53846a21c1766326bb14ce8ab6e997a0c120675d

trunk/CREDITS

@@ -2007,13 +2007,14 @@ S: University of Stuttgart, Germany and
 S: Ecole Nationale Superieure des Telecommunications, Paris
 
 N: Jamie Lokier
-E: jamie@imbolc.ucc.ie
+E: jamie@shareable.org
+W: http://www.shareable.org/
 D: Reboot-through-BIOS for broken 486 motherboards
-D: Some parport fixes
-S: 11 Goodson Walk
-S: Marston
+D: Parport fixes, futex improvements
+D: First instruction of x86 sysenter path :)
+S: 51 Sunningwell Road
 S: Oxford
-S: OX3 0HX
+S: OX1 4SZ
 S: United Kingdom
 
 N: Mark Lord

trunk/Documentation/DocBook/Makefile

@@ -28,7 +28,7 @@ PS_METHOD	= $(prefer-db2x)
 
 ###
 # The targets that may be used.
-.PHONY:	xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
+PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
 
 BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
 xmldocs: $(BOOKS)
@@ -211,3 +211,9 @@ clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS))
 
 #man put files in man subdir - traverse down
 subdir- := man/
+
+
+# Declare the contents of the .PHONY variable as phony.  We keep that
+# information in a variable se we can use it in if_changed and friends.
+
+.PHONY: $(PHONY)

trunk/Documentation/DocBook/deviceiobook.tmpl

@@ -270,25 +270,6 @@ CPU B:  spin_unlock_irqrestore(&dev_lock, flags)
       </para>
     </sect1>
 
-    <sect1>
-      <title>ISA legacy functions</title>
-      <para>
-	On older kernels (2.2 and earlier) the ISA bus could be read or
-	written with these functions and without ioremap being used. This is
-	no longer true in Linux 2.4. A set of equivalent functions exist for
-	easy legacy driver porting. The functions available are prefixed
-	with 'isa_' and are <function>isa_readb</function>,
-	<function>isa_writeb</function>, <function>isa_readw</function>, 
-	<function>isa_writew</function>, <function>isa_readl</function>,
-	<function>isa_writel</function>, <function>isa_memcpy_fromio</function>
-	and <function>isa_memcpy_toio</function>
-      </para>
-      <para>
-	These functions should not be used in new drivers, and will
-	eventually be going away.
-      </para>
-    </sect1>
-
   </chapter>
 
   <chapter>

trunk/Documentation/RCU/whatisRCU.txt

@@ -360,7 +360,7 @@ uses of RCU may be found in listRCU.txt, arrayRCU.txt, and NMI-RCU.txt.
 		struct foo *new_fp;
 		struct foo *old_fp;
 
-		new_fp = kmalloc(sizeof(*fp), GFP_KERNEL);
+		new_fp = kmalloc(sizeof(*new_fp), GFP_KERNEL);
 		spin_lock(&foo_mutex);
 		old_fp = gbl_foo;
 		*new_fp = *old_fp;
@@ -461,7 +461,7 @@ The foo_update_a() function might then be written as follows:
 		struct foo *new_fp;
 		struct foo *old_fp;
 
-		new_fp = kmalloc(sizeof(*fp), GFP_KERNEL);
+		new_fp = kmalloc(sizeof(*new_fp), GFP_KERNEL);
 		spin_lock(&foo_mutex);
 		old_fp = gbl_foo;
 		*new_fp = *old_fp;

trunk/Documentation/arm/Booting

@@ -118,7 +118,7 @@ to store page tables.  The recommended placement is 32KiB into RAM.
 
 In either case, the following conditions must be met:
 
-- Quiesce all DMA capable devicess so that memory does not get
+- Quiesce all DMA capable devices so that memory does not get
   corrupted by bogus network packets or disk data. This will save
   you many hours of debug.
 

trunk/Documentation/arm/README

@@ -89,7 +89,7 @@ Modules
   Although modularisation is supported (and required for the FP emulator),
   each module on an ARM2/ARM250/ARM3 machine when is loaded will take
   memory up to the next 32k boundary due to the size of the pages.
-  Therefore, modularisation on these machines really worth it?
+  Therefore, is modularisation on these machines really worth it?
 
   However, ARM6 and up machines allow modules to take multiples of 4k, and
   as such Acorn RiscPCs and other architectures using these processors can

trunk/Documentation/arm/Setup

@@ -58,7 +58,7 @@ below:
  video_y
 
    This describes the character position of cursor on VGA console, and
-   is otherwise unused. (should not used for other console types, and
+   is otherwise unused. (should not be used for other console types, and
    should not be used for other purposes).
 
  memc_control_reg

trunk/Documentation/cpusets.txt

@@ -18,7 +18,8 @@ CONTENTS:
   1.4 What are exclusive cpusets ?
   1.5 What does notify_on_release do ?
   1.6 What is memory_pressure ?
-  1.7 How do I use cpusets ?
+  1.7 What is memory spread ?
+  1.8 How do I use cpusets ?
 2. Usage Examples and Syntax
   2.1 Basic Usage
   2.2 Adding/removing cpus
@@ -317,7 +318,78 @@ the tasks in the cpuset, in units of reclaims attempted per second,
 times 1000.
 
 
-1.7 How do I use cpusets ?
+1.7 What is memory spread ?
+---------------------------
+There are two boolean flag files per cpuset that control where the
+kernel allocates pages for the file system buffers and related in
+kernel data structures.  They are called 'memory_spread_page' and
+'memory_spread_slab'.
+
+If the per-cpuset boolean flag file 'memory_spread_page' is set, then
+the kernel will spread the file system buffers (page cache) evenly
+over all the nodes that the faulting task is allowed to use, instead
+of preferring to put those pages on the node where the task is running.
+
+If the per-cpuset boolean flag file 'memory_spread_slab' is set,
+then the kernel will spread some file system related slab caches,
+such as for inodes and dentries evenly over all the nodes that the
+faulting task is allowed to use, instead of preferring to put those
+pages on the node where the task is running.
+
+The setting of these flags does not affect anonymous data segment or
+stack segment pages of a task.
+
+By default, both kinds of memory spreading are off, and memory
+pages are allocated on the node local to where the task is running,
+except perhaps as modified by the tasks NUMA mempolicy or cpuset
+configuration, so long as sufficient free memory pages are available.
+
+When new cpusets are created, they inherit the memory spread settings
+of their parent.
+
+Setting memory spreading causes allocations for the affected page
+or slab caches to ignore the tasks NUMA mempolicy and be spread
+instead.    Tasks using mbind() or set_mempolicy() calls to set NUMA
+mempolicies will not notice any change in these calls as a result of
+their containing tasks memory spread settings.  If memory spreading
+is turned off, then the currently specified NUMA mempolicy once again
+applies to memory page allocations.
+
+Both 'memory_spread_page' and 'memory_spread_slab' are boolean flag
+files.  By default they contain "0", meaning that the feature is off
+for that cpuset.  If a "1" is written to that file, then that turns
+the named feature on.
+
+The implementation is simple.
+
+Setting the flag 'memory_spread_page' turns on a per-process flag
+PF_SPREAD_PAGE for each task that is in that cpuset or subsequently
+joins that cpuset.  The page allocation calls for the page cache
+is modified to perform an inline check for this PF_SPREAD_PAGE task
+flag, and if set, a call to a new routine cpuset_mem_spread_node()
+returns the node to prefer for the allocation.
+
+Similarly, setting 'memory_spread_cache' turns on the flag
+PF_SPREAD_SLAB, and appropriately marked slab caches will allocate
+pages from the node returned by cpuset_mem_spread_node().
+
+The cpuset_mem_spread_node() routine is also simple.  It uses the
+value of a per-task rotor cpuset_mem_spread_rotor to select the next
+node in the current tasks mems_allowed to prefer for the allocation.
+
+This memory placement policy is also known (in other contexts) as
+round-robin or interleave.
+
+This policy can provide substantial improvements for jobs that need
+to place thread local data on the corresponding node, but that need
+to access large file system data sets that need to be spread across
+the several nodes in the jobs cpuset in order to fit.  Without this
+policy, especially for jobs that might have one thread reading in the
+data set, the memory allocation across the nodes in the jobs cpuset
+can become very uneven.
+
+
+1.8 How do I use cpusets ?
 --------------------------
 
 In order to minimize the impact of cpusets on critical kernel

trunk/Documentation/feature-removal-schedule.txt

@@ -116,6 +116,17 @@ Who:	Harald Welte <laforge@netfilter.org>
 
 ---------------------------
 
+What:	remove EXPORT_SYMBOL(kernel_thread)
+When:	August 2006
+Files:	arch/*/kernel/*_ksyms.c
+Why:	kernel_thread is a low-level implementation detail.  Drivers should
+        use the <linux/kthread.h> API instead which shields them from
+	implementation details and provides a higherlevel interface that
+	prevents bugs and code duplication
+Who:	Christoph Hellwig <hch@lst.de>
+
+---------------------------
+
 What:	EXPORT_SYMBOL(lookup_hash)
 When:	January 2006
 Why:	Too low-level interface.  Use lookup_one_len or lookup_create instead.
@@ -165,6 +176,18 @@ Who:	Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@s
 
 ---------------------------
 
+What:	Usage of invalid timevals in setitimer
+When:	March 2007
+Why:	POSIX requires to validate timevals in the setitimer call. This
+	was never done by Linux. The invalid (e.g. negative timevals) were
+	silently converted to more or less random timeouts and intervals.
+	Until the removal a per boot limited number of warnings is printed
+	and the timevals are sanitized.
+
+Who:	Thomas Gleixner <tglx@linutronix.de>
+
+---------------------------
+
 What:	I2C interface of the it87 driver
 When:	January 2007
 Why:	The ISA interface is faster and should be always available. The I2C
@@ -174,6 +197,17 @@ Who:	Jean Delvare <khali@linux-fr.org>
 
 ---------------------------
 
+What:	remove EXPORT_SYMBOL(tasklist_lock)
+When:	August 2006
+Files:	kernel/fork.c
+Why:	tasklist_lock protects the kernel internal task list.  Modules have
+	no business looking at it, and all instances in drivers have been due
+	to use of too-lowlevel APIs.  Having this symbol exported prevents
+	moving to more scalable locking schemes for the task list.
+Who:	Christoph Hellwig <hch@lst.de>
+
+---------------------------
+
 What:	mount/umount uevents
 When:	February 2007
 Why:	These events are not correct, and do not properly let userspace know

trunk/Documentation/filesystems/v9fs.txt → trunk/Documentation/filesystems/9p.txt

@@ -1,5 +1,5 @@
-			V9FS: 9P2000 for Linux
-			======================
+	  	    v9fs: Plan 9 Resource Sharing for Linux
+		    =======================================
 
 ABOUT
 =====
@@ -9,18 +9,19 @@ v9fs is a Unix implementation of the Plan 9 9p remote filesystem protocol.
 This software was originally developed by Ron Minnich <rminnich@lanl.gov>
 and Maya Gokhale <maya@lanl.gov>.  Additional development by Greg Watson
 <gwatson@lanl.gov> and most recently Eric Van Hensbergen
-<ericvh@gmail.com> and Latchesar Ionkov <lucho@ionkov.net>.
+<ericvh@gmail.com>, Latchesar Ionkov <lucho@ionkov.net> and Russ Cox
+<rsc@swtch.com>.
 
 USAGE
 =====
 
 For remote file server:
 
-	mount -t 9P 10.10.1.2 /mnt/9
+	mount -t 9p 10.10.1.2 /mnt/9
 
 For Plan 9 From User Space applications (http://swtch.com/plan9)
 
-	mount -t 9P `namespace`/acme /mnt/9 -o proto=unix,name=$USER
+	mount -t 9p `namespace`/acme /mnt/9 -o proto=unix,uname=$USER
 
 OPTIONS
 =======
@@ -32,7 +33,7 @@ OPTIONS
  			fd   - used passed file descriptors for connection
                                 (see rfdno and wfdno)
 
-  name=name	user name to attempt mount as on the remote server.  The
+  uname=name	user name to attempt mount as on the remote server.  The
   		server may override or ignore this value.  Certain user
 		names may require authentication.
 
@@ -42,7 +43,7 @@ OPTIONS
   debug=n	specifies debug level.  The debug level is a bitmask.
   			0x01 = display verbose error messages
 			0x02 = developer debug (DEBUG_CURRENT)
-			0x04 = display 9P trace
+			0x04 = display 9p trace
 			0x08 = display VFS trace
 			0x10 = display Marshalling debug
 			0x20 = display RPC debug
@@ -53,11 +54,11 @@ OPTIONS
 
   wfdno=n	the file descriptor for writing with proto=fd
 
-  maxdata=n	the number of bytes to use for 9P packet payload (msize)
+  maxdata=n	the number of bytes to use for 9p packet payload (msize)
 
   port=n	port to connect to on the remote server
 
-  noextend	force legacy mode (no 9P2000.u semantics)
+  noextend	force legacy mode (no 9p2000.u semantics)
 
   uid		attempt to mount as a particular uid
 
@@ -72,7 +73,7 @@ OPTIONS
 RESOURCES
 =========
 
-The Linux version of the 9P server is now maintained under the npfs project
+The Linux version of the 9p server is now maintained under the npfs project
 on sourceforge (http://sourceforge.net/projects/npfs).
 
 There are user and developer mailing lists available through the v9fs project

trunk/Documentation/filesystems/proc.txt

@@ -121,7 +121,7 @@ Table 1-1: Process specific entries in /proc
 ..............................................................................
  File    Content                                        
  cmdline Command line arguments                         
- cpu	 Current and last cpu in wich it was executed		(2.4)(smp)
+ cpu	 Current and last cpu in which it was executed		(2.4)(smp)
  cwd	 Link to the current working directory
  environ Values of environment variables      
  exe	 Link to the executable of this process
@@ -309,13 +309,13 @@ is the same by default:
   > cat /proc/irq/0/smp_affinity 
   ffffffff
 
-It's a bitmask, in wich you can specify wich CPUs can handle the IRQ, you can
+It's a bitmask, in which you can specify which CPUs can handle the IRQ, you can
 set it by doing:
 
   > echo 1 > /proc/irq/prof_cpu_mask
 
 This means that only the first CPU will handle the IRQ, but you can also echo 5
-wich means that only the first and fourth CPU can handle the IRQ.
+which means that only the first and fourth CPU can handle the IRQ.
 
 The way IRQs are routed is handled by the IO-APIC, and it's Round Robin
 between all the CPUs which are allowed to handle it. As usual the kernel has

trunk/Documentation/filesystems/udf.txt

@@ -26,6 +26,20 @@ The following mount options are supported:
 	nostrict	Unset strict conformance
 	iocharset=	Set the NLS character set
 
+The uid= and gid= options need a bit more explaining.  They will accept a
+decimal numeric value which will be used as the default ID for that mount.
+They will also accept the string "ignore" and "forget".  For files on the disk
+that are owned by nobody ( -1 ), they will instead look as if they are owned
+by the default ID.  The ignore option causes the default ID to override all
+IDs on the disk, not just -1.  The forget option causes all IDs to be written
+to disk as -1, so when the media is later remounted, they will appear to be
+owned by whatever default ID it is mounted with at that time.
+
+For typical desktop use of removable media, you should set the ID to that
+of the interactively logged on user, and also specify both the forget and
+ignore options.  This way the interactive user will always see the files
+on the disk as belonging to him.
+
 The remaining are for debugging and disaster recovery:
 
 	novrs		Skip volume sequence recognition