7 files changed, 28 insertions, 21 deletions
diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt
index 3be3b266be41..70cb68bed2e8 100644
--- a/Documentation/filesystems/dax.txt
+++ b/Documentation/filesystems/dax.txt
@@ -46,7 +46,6 @@ stall the CPU for an extended period, you should also not attempt to
 implement direct_access.
 
 These block devices may be used for inspiration:
-- axonram: Axon DDR2 device driver
 - brd: RAM backed block device driver
 - dcssblk: s390 dcss block device driver
 - pmem: NVDIMM persistent memory driver
diff --git a/Documentation/filesystems/ext2.txt b/Documentation/filesystems/ext2.txt
index 55755395d3dc..81c0becab225 100644
--- a/Documentation/filesystems/ext2.txt
+++ b/Documentation/filesystems/ext2.txt
@@ -49,12 +49,10 @@ sb=n				Use alternate superblock at this location.
 
 user_xattr			Enable "user." POSIX Extended Attributes
 				(requires CONFIG_EXT2_FS_XATTR).
-				See also http://acl.bestbits.at
 nouser_xattr			Don't support "user." extended attributes.
 
 acl				Enable POSIX Access Control Lists support
 				(requires CONFIG_EXT2_FS_POSIX_ACL).
-				See also http://acl.bestbits.at
 noacl				Don't support POSIX ACLs.
 
 nobh				Do not attach buffer_heads to file pagecache.
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 75236c0c2ac2..7f628b9f7c4b 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -202,15 +202,14 @@ inode_readahead_blks=n	This tuning parameter controls the maximum
 			the buffer cache.  The default value is 32 blocks.
 
 nouser_xattr		Disables Extended User Attributes.  See the
-			attr(5) manual page and http://acl.bestbits.at/
-			for more information about extended attributes.
+			attr(5) manual page for more information about
+			extended attributes.
 
 noacl			This option disables POSIX Access Control List
 			support. If ACL support is enabled in the kernel
 			configuration (CONFIG_EXT4_FS_POSIX_ACL), ACL is
 			enabled by default on mount. See the acl(5) manual
-			page and http://acl.bestbits.at/ for more information
-			about acl.
+			page for more information about acl.
 
 bsddf		(*)	Make 'df' act like BSD.
 minixdf			Make 'df' act like Minix.
@@ -233,7 +232,7 @@ data_err=ignore(*)	Just print an error message if an error occurs
 data_err=abort		Abort the journal if an error occurs in a file
 			data buffer in ordered mode.
 
-grpid			Give objects the same group ID as their creator.
+grpid			New objects have the group ID of their parent.
 bsdgroups
 
 nogrpid		(*)	New objects have the group ID of their creator.
diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting
index 520a4becb75c..63889149f532 100644
--- a/Documentation/filesystems/nfs/Exporting
+++ b/Documentation/filesystems/nfs/Exporting
@@ -56,13 +56,25 @@ a/ A dentry flag DCACHE_DISCONNECTED which is set on
    any dentry that might not be part of the proper prefix.
    This is set when anonymous dentries are created, and cleared when a
    dentry is noticed to be a child of a dentry which is in the proper
-   prefix. 
-
-b/ A per-superblock list "s_anon" of dentries which are the roots of
-   subtrees that are not in the proper prefix.  These dentries, as
-   well as the proper prefix, need to be released at unmount time.  As
-   these dentries will not be hashed, they are linked together on the
-   d_hash list_head.
+   prefix.  If the refcount on a dentry with this flag set
+   becomes zero, the dentry is immediately discarded, rather than being
+   kept in the dcache.  If a dentry that is not already in the dcache
+   is repeatedly accessed by filehandle (as NFSD might do), an new dentry
+   will be a allocated for each access, and discarded at the end of
+   the access.
+
+   Note that such a dentry can acquire children, name, ancestors, etc.
+   without losing DCACHE_DISCONNECTED - that flag is only cleared when
+   subtree is successfully reconnected to root.  Until then dentries
+   in such subtree are retained only as long as there are references;
+   refcount reaching zero means immediate eviction, same as for unhashed
+   dentries.  That guarantees that we won't need to hunt them down upon
+   umount.
+
+b/ A primitive for creation of secondary roots - d_obtain_root(inode).
+   Those do _not_ bear DCACHE_DISCONNECTED.  They are placed on the
+   per-superblock list (->s_roots), so they can be located at umount
+   time for eviction purposes.
 
 c/ Helper routines to allocate anonymous dentries, and to help attach
    loose directory dentries at lookup time. They are:
@@ -77,7 +89,6 @@ c/ Helper routines to allocate anonymous dentries, and to help attach
       (such as an anonymous one created by d_obtain_alias), if appropriate.
       It returns NULL when the passed-in dentry is used, following the calling
       convention of ->lookup.
-
  
 Filesystem Issues
 -----------------
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt
index c0727dc36271..f2f3f8592a6f 100644
--- a/Documentation/filesystems/nilfs2.txt
+++ b/Documentation/filesystems/nilfs2.txt
@@ -25,8 +25,8 @@ available from the following download page.  At least "mkfs.nilfs2",
 cleaner or garbage collector) are required.  Details on the tools are
 described in the man pages included in the package.
 
-Project web page:    http://nilfs.sourceforge.net/
-Download page:       http://nilfs.sourceforge.net/en/download.html
+Project web page:    https://nilfs.sourceforge.io/
+Download page:       https://nilfs.sourceforge.io/en/download.html
 List info:           http://vger.kernel.org/vger-lists.html#linux-nilfs
 
 Caveats
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt
index 9a3658cc399e..a1426cabcef1 100644
--- a/Documentation/filesystems/sysfs.txt
+++ b/Documentation/filesystems/sysfs.txt
@@ -154,8 +154,8 @@ static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
         if (dev_attr->show)
                 ret = dev_attr->show(dev, dev_attr, buf);
         if (ret >= (ssize_t)PAGE_SIZE) {
-                print_symbol("dev_attr_show: %s returned bad count\n",
-                                (unsigned long)dev_attr->show);
+                printk("dev_attr_show: %pS returned bad count\n",
+                                dev_attr->show);
         }
         return ret;
 }
diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index cf51360e3a9f..91031298beb1 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -344,4 +344,4 @@ the following:
 	   characters in the final slot are set to Unicode 0xFFFF.
 
 Finally, note that the extended name is stored in Unicode.  Each Unicode
-character takes two bytes.
+character takes either two or four bytes, UTF-16LE encoded.