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Date: Thu, 30 Jul 2009 17:53:14 -0700 From: Randy Dunlap <randy.dunlap@...cle.com> To: lkml <linux-kernel@...r.kernel.org>, akpm <akpm@...ux-foundation.org> Cc: Peng Tao <bergwolf@...il.com>, Miklos Szeredi <miklos@...redi.hu>, Christoph Hellwig <hch@...radead.org>, Karel Zak <kzak@...hat.com> Subject: [PATCH 2/2] doc/filesystems: more mount cleanups From: Peng Tao <bergwolf@...il.com> 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@...il.com> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com> Cc: Miklos Szeredi <miklos@...redi.hu> Cc: Christoph Hellwig <hch@...radead.org> --- Documentation/filesystems/sharedsubtree.txt | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) --- linux-2.6.31-rc4-git5.orig/Documentation/filesystems/sharedsubtree.txt +++ linux-2.6.31-rc4-git5/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 --- ~Randy LPC 2009, Sept. 23-25, Portland, Oregon http://linuxplumbersconf.org/2009/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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