Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:

 - Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc,
   gup, hugetlb, pagemap, memremap)

 - Various other things (hfs, ocfs2, kmod, misc, seqfile)

* akpm: (34 commits)
  ipc/util.c: sysvipc_find_ipc() should increase position index
  kernel/gcov/fs.c: gcov_seq_next() should increase position index
  fs/seq_file.c: seq_read(): add info message about buggy .next functions
  drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings
  change email address for Pali Rohár
  selftests: kmod: test disabling module autoloading
  selftests: kmod: fix handling test numbers above 9
  docs: admin-guide: document the kernel.modprobe sysctl
  fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
  kmod: make request_module() return an error when autoloading is disabled
  mm/memremap: set caching mode for PCI P2PDMA memory to WC
  mm/memory_hotplug: add pgprot_t to mhp_params
  powerpc/mm: thread pgprot_t through create_section_mapping()
  x86/mm: introduce __set_memory_prot()
  x86/mm: thread pgprot_t through init_memory_mapping()
  mm/memory_hotplug: rename mhp_restrictions to mhp_params
  mm/memory_hotplug: drop the flags field from struct mhp_restrictions
  mm/special: create generic fallbacks for pte_special() and pte_mkspecial()
  mm/vma: introduce VM_ACCESS_FLAGS
  mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS
  ...

6 files changed, 18 insertions, 5 deletions

diff --git a/fs/filesystems.c b/fs/filesystems.c
index 77bf5f95362d..90b8d879fbaf 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -272,7 +272,9 @@ struct file_system_type *get_fs_type(const char *name)
 	fs = __get_fs_type(name, len);
 	if (!fs && (request_module("fs-%.*s", len, name) == 0)) {
 		fs = __get_fs_type(name, len);
-		WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name);
+		if (!fs)
+			pr_warn_once("request_module fs-%.*s succeeded, but still no fs?\n",
+				     len, name);
 	}
 
 	if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c
index e6d554476db4..eeebe80c6be4 100644
--- a/fs/hfsplus/attributes.c
+++ b/fs/hfsplus/attributes.c
@@ -292,6 +292,10 @@ static int __hfsplus_delete_attr(struct inode *inode, u32 cnid,
 		return -ENOENT;
 	}
 
+	/* Avoid btree corruption */
+	hfs_bnode_read(fd->bnode, fd->search_key,
+			fd->keyoffset, fd->keylength);
+
 	err = hfs_brec_remove(fd);
 	if (err)
 		return err;
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 65b3abbcce4e..2f834add165b 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7402,6 +7402,10 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
 	struct ocfs2_inline_data *idata = &di->id2.i_data;
 
+	/* No need to punch hole beyond i_size. */
+	if (start >= i_size_read(inode))
+		return 0;
+
 	if (end > i_size_read(inode))
 		end = i_size_read(inode);
 
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 79781ebd2145..70f5fdf99bf6 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -232,9 +232,12 @@ Fill:
 		loff_t pos = m->index;
 
 		p = m->op->next(m, p, &m->index);
-		if (pos == m->index)
-			/* Buggy ->next function */
+		if (pos == m->index) {
+			pr_info_ratelimited("buggy seq_file .next function %ps "
+				"did not updated position index\n",
+				m->op->next);
 			m->index++;
+		}
 		if (!p || IS_ERR(p)) {
 			err = PTR_ERR(p);
 			break;
diff --git a/fs/udf/ecma_167.h b/fs/udf/ecma_167.h
index 3fd85464abd5..736ebc5dc441 100644
--- a/fs/udf/ecma_167.h
+++ b/fs/udf/ecma_167.h
@@ -5,7 +5,7 @@
  * http://www.ecma.ch
  *
  * Copyright (c) 2001-2002  Ben Fennema
- * Copyright (c) 2017-2019  Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2017-2019  Pali Rohár <pali@kernel.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/fs/udf/osta_udf.h b/fs/udf/osta_udf.h
index 35e61b2cacfe..d5fbfab3ddb6 100644
--- a/fs/udf/osta_udf.h
+++ b/fs/udf/osta_udf.h
@@ -5,7 +5,7 @@
  * http://www.osta.org
  *
  * Copyright (c) 2001-2004  Ben Fennema
- * Copyright (c) 2017-2019  Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2017-2019  Pali Rohár <pali@kernel.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without