Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:
 "Most of the rest of MM and various other things. Some Kconfig rework
  still awaits merges of dependent trees from linux-next.

  Subsystems affected by this patch series: mm/hotfixes, mm/memcg,
  mm/vmstat, mm/thp, procfs, sysctl, misc, notifiers, core-kernel,
  bitops, lib, checkpatch, epoll, binfmt, init, rapidio, uaccess, kcov,
  ubsan, ipc, bitmap, mm/pagemap"

* akpm: (86 commits)
  mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h
  um: add support for folded p4d page tables
  um: remove unused pxx_offset_proc() and addr_pte() functions
  sparc32: use pgtable-nopud instead of 4level-fixup
  parisc/hugetlb: use pgtable-nopXd instead of 4level-fixup
  parisc: use pgtable-nopXd instead of 4level-fixup
  nds32: use pgtable-nopmd instead of 4level-fixup
  microblaze: use pgtable-nopmd instead of 4level-fixup
  m68k: mm: use pgtable-nopXd instead of 4level-fixup
  m68k: nommu: use pgtable-nopud instead of 4level-fixup
  c6x: use pgtable-nopud instead of 4level-fixup
  arm: nommu: use pgtable-nopud instead of 4level-fixup
  alpha: use pgtable-nopud instead of 4level-fixup
  gpio: pca953x: tighten up indentation
  gpio: pca953x: convert to use bitmap API
  gpio: pca953x: use input from regs structure in pca953x_irq_pending()
  gpio: pca953x: remove redundant variable and check in IRQ handler
  lib/bitmap: introduce bitmap_replace() helper
  lib/test_bitmap: fix comment about this file
  lib/test_bitmap: move exp1 and exp2 upper for others to use
  ...

2 files changed, 46 insertions, 5 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 592911a2f06c..7cbe6e72e363 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -874,14 +874,18 @@ sub seed_camelcase_file {
 	}
 }
 
+our %maintained_status = ();
+
 sub is_maintained_obsolete {
 	my ($filename) = @_;
 
 	return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
 
-	my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
+	if (!exists($maintained_status{$filename})) {
+		$maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
+	}
 
-	return $status =~ /obsolete/i;
+	return $maintained_status{$filename} =~ /obsolete/i;
 }
 
 sub is_SPDX_License_valid {
@@ -5038,8 +5042,9 @@ sub process {
 			    $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
 #Ignore Page<foo> variants
 			    $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
-#Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
-			    $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/ &&
+#Ignore SI style variants like nS, mV and dB
+#(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
+			    $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
 #Ignore some three character SI units explicitly, like MiB and KHz
 			    $var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
 				while ($var =~ m{($Ident)}g) {
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 5ef59214c555..34085d146fa2 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -26,6 +26,7 @@ my $email = 1;
 my $email_usename = 1;
 my $email_maintainer = 1;
 my $email_reviewer = 1;
+my $email_fixes = 1;
 my $email_list = 1;
 my $email_moderated_list = 1;
 my $email_subscriber_list = 0;
@@ -249,6 +250,7 @@ if (!GetOptions(
 		'r!' => \$email_reviewer,
 		'n!' => \$email_usename,
 		'l!' => \$email_list,
+		'fixes!' => \$email_fixes,
 		'moderated!' => \$email_moderated_list,
 		's!' => \$email_subscriber_list,
 		'multiline!' => \$output_multiline,
@@ -503,6 +505,7 @@ sub read_mailmap {
 ## use the filenames on the command line or find the filenames in the patchfiles
 
 my @files = ();
+my @fixes = ();			# If a patch description includes Fixes: lines
 my @range = ();
 my @keyword_tvi = ();
 my @file_emails = ();
@@ -568,6 +571,8 @@ foreach my $file (@ARGV) {
 		my $filename2 = $2;
 		push(@files, $filename1);
 		push(@files, $filename2);
+	    } elsif (m/^Fixes:\s+([0-9a-fA-F]{6,40})/) {
+		push(@fixes, $1) if ($email_fixes);
 	    } elsif (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
 		my $filename = $1;
 		$filename =~ s@^[^/]*/@@;
@@ -598,6 +603,7 @@ foreach my $file (@ARGV) {
 }
 
 @file_emails = uniq(@file_emails);
+@fixes = uniq(@fixes);
 
 my %email_hash_name;
 my %email_hash_address;
@@ -612,7 +618,6 @@ my %deduplicate_name_hash = ();
 my %deduplicate_address_hash = ();
 
 my @maintainers = get_maintainers();
-
 if (@maintainers) {
     @maintainers = merge_email(@maintainers);
     output(@maintainers);
@@ -927,6 +932,10 @@ sub get_maintainers {
 	}
     }
 
+    foreach my $fix (@fixes) {
+	vcs_add_commit_signers($fix, "blamed_fixes");
+    }
+
     foreach my $email (@email_to, @list_to) {
 	$email->[0] = deduplicate_email($email->[0]);
     }
@@ -1031,6 +1040,7 @@ MAINTAINER field selection options:
     --roles => show roles (status:subsystem, git-signer, list, etc...)
     --rolestats => show roles and statistics (commits/total_commits, %)
     --file-emails => add email addresses found in -f file (default: 0 (off))
+    --fixes => for patches, add signatures of commits with 'Fixes: <commit>' (default: 1 (on))
   --scm => print SCM tree(s) if any
   --status => print status if any
   --subsystem => print subsystem name if any
@@ -1730,6 +1740,32 @@ sub vcs_is_hg {
     return $vcs_used == 2;
 }
 
+sub vcs_add_commit_signers {
+    return if (!vcs_exists());
+
+    my ($commit, $desc) = @_;
+    my $commit_count = 0;
+    my $commit_authors_ref;
+    my $commit_signers_ref;
+    my $stats_ref;
+    my @commit_authors = ();
+    my @commit_signers = ();
+    my $cmd;
+
+    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
+    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
+
+    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, "");
+    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
+    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
+
+    foreach my $signer (@commit_signers) {
+	$signer = deduplicate_email($signer);
+    }
+
+    vcs_assign($desc, 1, @commit_signers);
+}
+
 sub interactive_get_maintainers {
     my ($list_ref) = @_;
     my @list = @$list_ref;