doc/filesystems: more mount cleanups

Documentation/filesystems/sharedsubtree.txt needs updating because the
mount command in util-linux package is well aware of shared subtree
features now.  The patch also fixes two typos in sharedsubtree.txt.

Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/filesystems/sharedsubtree.txt b/Documentation/filesystems/sharedsubtree.txt
index b2c1ee5d98fcb34a1abeb8444fdcd463fb907025..23a181074f94b5f65ac25c603d65fc749fa5ed78 100644 (file)
--- a/Documentation/filesystems/sharedsubtree.txt
+++ b/Documentation/filesystems/sharedsubtree.txt
@@ -4,7 +4,7 @@ Shared Subtrees
 Contents:
        1) Overview
        2) Features
-       3) smount command
+       3) Setting mount states
        4) Use-case
        5) Detailed semantics
        6) Quiz
@@ -135,10 +135,15 @@ replicas continue to be exactly same.
        Binding a unbindable mount is a invalid operation.
 
 
-3) smount command
+3) Setting mount states
 
-       Modern mount(8) command is aware of shared subtree features,
-       so use it instead of the 'smount' command. [source code removed]
+       The mount command (util-linux package) can be used to set mount
+       states:
+
+       mount --make-shared mountpoint
+       mount --make-slave mountpoint
+       mount --make-private mountpoint
+       mount --make-unbindable mountpoint
 
 
 4) Use cases
@@ -209,7 +214,7 @@ replicas continue to be exactly same.
                mount --rbind / /view/v3
                mount --rbind / /view/v4
 
-               and if /usr has a versioning filesystem mounted, than that
+               and if /usr has a versioning filesystem mounted, then that
                mount appears at /view/v1/usr, /view/v2/usr, /view/v3/usr and
                /view/v4/usr too
 
@@ -249,7 +254,7 @@ replicas continue to be exactly same.
 
                For example:
                        mount --make-shared /mnt
-                       mount --bin /mnt /tmp
+                       mount --bind /mnt /tmp
 
                The mount at /mnt and that at /tmp are both shared and belong
                to the same peer group. Anything mounted or unmounted under