Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "17 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  nilfs2: convert to SPDX license tags
  drivers/dax/device.c: convert variable to vm_fault_t type
  lib/Kconfig.debug: fix three typos in help text
  checkpatch: add __ro_after_init to known $Attribute
  mm: fix BUG_ON() in vmf_insert_pfn_pud() from VM_MIXEDMAP removal
  uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name
  memory_hotplug: fix kernel_panic on offline page processing
  checkpatch: add optional static const to blank line declarations test
  ipc/shm: properly return EIDRM in shm_lock()
  mm/hugetlb: filter out hugetlb pages if HUGEPAGE migration is not supported.
  mm/util.c: improve kvfree() kerneldoc
  tools/vm/page-types.c: fix "defined but not used" warning
  tools/vm/slabinfo.c: fix sign-compare warning
  kmemleak: always register debugfs file
  mm: respect arch_dup_mmap() return value
  mm, oom: fix missing tlb_finish_mmu() in __oom_reap_task_mm().
  mm: memcontrol: print proper OOM header when no eligible victim left

drivers/base/memory.c

@@ -416,26 +416,24 @@ static ssize_t show_valid_zones(struct device *dev,
 	struct zone *default_zone;
 	int nid;
 
-	/*
-	 * The block contains more than one zone can not be offlined.
-	 * This can happen e.g. for ZONE_DMA and ZONE_DMA32
-	 */
-	if (!test_pages_in_a_zone(start_pfn, start_pfn + nr_pages, &valid_start_pfn, &valid_end_pfn))
-		return sprintf(buf, "none\n");
-
-	start_pfn = valid_start_pfn;
-	nr_pages = valid_end_pfn - start_pfn;
-
 	/*
 	 * Check the existing zone. Make sure that we do that only on the
 	 * online nodes otherwise the page_zone is not reliable
 	 */
 	if (mem->state == MEM_ONLINE) {
+		/*
+		 * The block contains more than one zone can not be offlined.
+		 * This can happen e.g. for ZONE_DMA and ZONE_DMA32
+		 */
+		if (!test_pages_in_a_zone(start_pfn, start_pfn + nr_pages,
+					  &valid_start_pfn, &valid_end_pfn))
+			return sprintf(buf, "none\n");
+		start_pfn = valid_start_pfn;
 		strcat(buf, page_zone(pfn_to_page(start_pfn))->name);
 		goto out;
 	}
 
-	nid = pfn_to_nid(start_pfn);
+	nid = mem->nid;
 	default_zone = zone_for_pfn_range(MMOP_ONLINE_KEEP, nid, start_pfn, nr_pages);
 	strcat(buf, default_zone->name);
 

drivers/dax/device.c

@@ -392,7 +392,8 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf,
 {
 	struct file *filp = vmf->vma->vm_file;
 	unsigned long fault_size;
-	int rc, id;
+	vm_fault_t rc = VM_FAULT_SIGBUS;
+	int id;
 	pfn_t pfn;
 	struct dev_dax *dev_dax = filp->private_data;
 

fs/nilfs2/alloc.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * alloc.c - NILFS dat/inode allocator
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Originally written by Koji Sato.
  * Two allocators were unified by Ryusuke Konishi and Amagai Yoshiji.
  */

fs/nilfs2/alloc.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * alloc.h - persistent object (dat entry/disk inode) allocator/deallocator
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Originally written by Koji Sato.
  * Two allocators were unified by Ryusuke Konishi and Amagai Yoshiji.
  */

fs/nilfs2/bmap.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * bmap.c - NILFS block mapping.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/bmap.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * bmap.h - NILFS block mapping.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/btnode.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * btnode.c - NILFS B-tree node cache
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Originally written by Seiji Kihara.
  * Fully revised by Ryusuke Konishi for stabilization and simplification.
  *

fs/nilfs2/btnode.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * btnode.h - NILFS B-tree node cache
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Seiji Kihara.
  * Revised by Ryusuke Konishi.
  */

fs/nilfs2/btree.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * btree.c - NILFS B-tree.
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/btree.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * btree.h - NILFS B-tree.
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/cpfile.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * cpfile.c - NILFS checkpoint file.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/cpfile.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * cpfile.h - NILFS checkpoint file.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/dat.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * dat.c - NILFS disk address translation.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/dat.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * dat.h - NILFS disk address translation.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/dir.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * dir.c - NILFS directory entry operations
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Modified for NILFS by Amagai Yoshiji.
  */
 /*

fs/nilfs2/direct.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * direct.c - NILFS direct block pointer.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/direct.h

@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * direct.h - NILFS direct block pointer.
  *
  * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Koji Sato.
  */
 

fs/nilfs2/file.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * file.c - NILFS regular file handling primitives including fsync().
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Amagai Yoshiji and Ryusuke Konishi.
  */
 

fs/nilfs2/gcinode.c

@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * gcinode.c - dummy inodes to buffer blocks for garbage collection
  *
  * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Written by Seiji Kihara, Amagai Yoshiji, and Ryusuke Konishi.
  * Revised by Ryusuke Konishi.
  *