Merge branch 'linus' into x86/core

5 files changed, 58 insertions, 2 deletions

diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
new file mode 100644
index 000000000000..4573fd4b7876
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
@@ -0,0 +1,27 @@
+What:           /sys/firmware/sgi_uv/
+Date:           August 2008
+Contact:        Russ Anderson <rja@sgi.com>
+Description:
+                The /sys/firmware/sgi_uv directory contains information
+                about the SGI UV platform.
+
+                Under that directory are a number of files:
+
+                        partition_id
+                        coherence_id
+
+                The partition_id entry contains the partition id.
+                SGI UV systems can be partitioned into multiple physical
+                machines, which each partition running a unique copy
+                of the operating system.  Each partition will have a unique
+                partition id.  To display the partition id, use the command:
+
+                        cat /sys/firmware/sgi_uv/partition_id
+
+                The coherence_id entry contains the coherence id.
+                A partitioned SGI UV system can have one or more coherence
+                domain.  The coherence id indicates which coherence domain
+                this partition is in.  To display the coherence id, use the
+                command:
+
+                        cat /sys/firmware/sgi_uv/coherence_id
diff --git a/Documentation/dontdiff b/Documentation/dontdiff
index 881e6dd03aea..27809357da58 100644
--- a/Documentation/dontdiff
+++ b/Documentation/dontdiff
@@ -5,6 +5,8 @@
 *.css
 *.dvi
 *.eps
+*.fw.gen.S
+*.fw
 *.gif
 *.grep
 *.grp
diff --git a/Documentation/filesystems/ntfs.txt b/Documentation/filesystems/ntfs.txt
index e79ee2db183a..ac2a261c5f7d 100644
--- a/Documentation/filesystems/ntfs.txt
+++ b/Documentation/filesystems/ntfs.txt
@@ -40,7 +40,7 @@ Web site
 ========
 
 There is plenty of additional information on the linux-ntfs web site
-at http://linux-ntfs.sourceforge.net/
+at http://www.linux-ntfs.org/
 
 The web site has a lot of additional information, such as a comprehensive
 FAQ, documentation on the NTFS on-disk format, information on the Linux-NTFS
@@ -272,7 +272,7 @@ And you would know that /dev/hda2 has a size of 37768814 - 4209030 + 1 =
 For Win2k and later dynamic disks, you can for example use the ldminfo utility
 which is part of the Linux LDM tools (the latest version at the time of
 writing is linux-ldm-0.0.8.tar.bz2).  You can download it from:
-        http://linux-ntfs.sourceforge.net/downloads.html
+        http://www.linux-ntfs.org/
 Simply extract the downloaded archive (tar xvjf linux-ldm-0.0.8.tar.bz2), go
 into it (cd linux-ldm-0.0.8) and change to the test directory (cd test).  You
 will find the precompiled (i386) ldminfo utility there.  NOTE: You will not be
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 64557821ee59..394eb2cc1c39 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1339,6 +1339,25 @@ Enables/Disables the protection of the per-process proc entries "maps" and
 "smaps".  When enabled, the contents of these files are visible only to
 readers that are allowed to ptrace() the given process.
 
+msgmni
+------
+
+Maximum number of message queue ids on the system.
+This value scales to the amount of lowmem. It is automatically recomputed
+upon memory add/remove or ipc namespace creation/removal.
+When a value is written into this file, msgmni's value becomes fixed, i.e. it
+is not recomputed anymore when one of the above events occurs.
+Use auto_msgmni to change this behavior.
+
+auto_msgmni
+-----------
+
+Enables/Disables automatic recomputing of msgmni upon memory add/remove or
+upon ipc namespace creation/removal (see the msgmni description above).
+Echoing "1" into this file enables msgmni automatic recomputing.
+Echoing "0" turns it off.
+auto_msgmni default value is 1.
+
 
 2.4 /proc/sys/vm - The virtual memory subsystem
 -----------------------------------------------
diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c
index 655414821edc..7228369d1014 100644
--- a/Documentation/lguest/lguest.c
+++ b/Documentation/lguest/lguest.c
@@ -895,6 +895,9 @@ static void handle_console_output(int fd, struct virtqueue *vq, bool timeout)
         }
 }
 
+/* This is called when we no longer want to hear about Guest changes to a
+ * virtqueue.  This is more efficient in high-traffic cases, but it means we
+ * have to set a timer to check if any more changes have occurred. */
 static void block_vq(struct virtqueue *vq)
 {
         struct itimerval itm;
@@ -939,6 +942,11 @@ static void handle_net_output(int fd, struct virtqueue *vq, bool timeout)
         if (!timeout && num)
                 block_vq(vq);
 
+        /* We never quite know how long should we wait before we check the
+         * queue again for more packets.  We start at 500 microseconds, and if
+         * we get fewer packets than last time, we assume we made the timeout
+         * too small and increase it by 10 microseconds.  Otherwise, we drop it
+         * by one microsecond every time.  It seems to work well enough. */
         if (timeout) {
                 if (num < last_timeout_num)
                         timeout_usec += 10;