Merge branch 'akpm' (updates from Andrew Morton)

Merge second patch-bomb from Andrew Morton:
 - misc fixes
 - audit stuff
 - fanotify/inotify/dnotify things
 - most of the rest of MM.  The new cache shrinker code from Glauber and
   Dave Chinner probably isn't quite stabilized yet.
 - ptrace
 - ipc
 - partitions
 - reboot cleanups
 - add LZ4 decompressor, use it for kernel compression

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  lib/scatterlist: error handling in __sg_alloc_table()
  scsi_debug: fix do_device_access() with wrap around range
  crypto: talitos: use sg_pcopy_to_buffer()
  lib/scatterlist: introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer()
  lib/scatterlist: factor out sg_miter_get_next_page() from sg_miter_next()
  crypto: add lz4 Cryptographic API
  lib: add lz4 compressor module
  arm: add support for LZ4-compressed kernel
  lib: add support for LZ4-compressed kernel
  decompressor: add LZ4 decompressor module
  lib: add weak clz/ctz functions
  reboot: move arch/x86 reboot= handling to generic kernel
  reboot: arm: change reboot_mode to use enum reboot_mode
  reboot: arm: prepare reboot_mode for moving to generic kernel code
  reboot: arm: remove unused restart_mode fields from some arm subarchs
  reboot: unicore32: prepare reboot_mode for moving to generic kernel code
  reboot: x86: prepare reboot_mode for moving to generic kernel code
  reboot: checkpatch.pl the new kernel/reboot.c file
  reboot: move shutdown/reboot related functions to kernel/reboot.c
  reboot: remove -stable friendly PF_THREAD_BOUND define
  ...

2 files changed, 40 insertions, 19 deletions

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f97869f1f09b..6031e2380638 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -311,6 +311,11 @@ cmd_lzo = (cat $(filter-out FORCE,$^) | \
 	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 	(rm -f $@ ; false)
 
+quiet_cmd_lz4 = LZ4     $@
+cmd_lz4 = (cat $(filter-out FORCE,$^) | \
+	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
+	(rm -f $@ ; false)
+
 # U-Boot mkimage
 # ---------------------------------------------------------------------------
 
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6afcd1239ca5..2ee9eb750560 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6,6 +6,7 @@
 # Licensed under the terms of the GNU GPL License version 2
 
 use strict;
+use POSIX;
 
 my $P = $0;
 $P =~ s@.*/@@g;
@@ -399,37 +400,52 @@ sub seed_camelcase_includes {
 	return if ($camelcase_seeded);
 
 	my $files;
-	my $camelcase_git_file = "";
+	my $camelcase_cache = "";
+	my @include_files = ();
+
+	$camelcase_seeded = 1;
 
 	if (-d ".git") {
 		my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
 		chomp $git_last_include_commit;
-		$camelcase_git_file = ".checkpatch-camelcase.$git_last_include_commit";
-		if (-f $camelcase_git_file) {
-			open(my $camelcase_file, '<', "$camelcase_git_file")
-			    or warn "$P: Can't read '$camelcase_git_file' $!\n";
-			while (<$camelcase_file>) {
-				chomp;
-				$camelcase{$_} = 1;
-			}
-			close($camelcase_file);
-
-			return;
-		}
-		$files = `git ls-files include`;
+		$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
 	} else {
+		my $last_mod_date = 0;
 		$files = `find $root/include -name "*.h"`;
+		@include_files = split('\n', $files);
+		foreach my $file (@include_files) {
+			my $date = POSIX::strftime("%Y%m%d%H%M",
+						   localtime((stat $file)[9]));
+			$last_mod_date = $date if ($last_mod_date < $date);
+		}
+		$camelcase_cache = ".checkpatch-camelcase.date.$last_mod_date";
+	}
+
+	if ($camelcase_cache ne "" && -f $camelcase_cache) {
+		open(my $camelcase_file, '<', "$camelcase_cache")
+		    or warn "$P: Can't read '$camelcase_cache' $!\n";
+		while (<$camelcase_file>) {
+			chomp;
+			$camelcase{$_} = 1;
+		}
+		close($camelcase_file);
+
+		return;
+	}
+
+	if (-d ".git") {
+		$files = `git ls-files "include/*.h"`;
+		@include_files = split('\n', $files);
 	}
-	my @include_files = split('\n', $files);
+
 	foreach my $file (@include_files) {
 		seed_camelcase_file($file);
 	}
-	$camelcase_seeded = 1;
 
-	if ($camelcase_git_file ne "") {
+	if ($camelcase_cache ne "") {
 		unlink glob ".checkpatch-camelcase.*";
-		open(my $camelcase_file, '>', "$camelcase_git_file")
-		    or warn "$P: Can't write '$camelcase_git_file' $!\n";
+		open(my $camelcase_file, '>', "$camelcase_cache")
+		    or warn "$P: Can't write '$camelcase_cache' $!\n";
 		foreach (sort { lc($a) cmp lc($b) } keys(%camelcase)) {
 			print $camelcase_file ("$_\n");
 		}