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| author | Ram Pai <linuxram@us.ibm.com> | 2005-11-07 17:20:48 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 18:18:11 -0800 |
| commit | a58b0eb8e64b78d9315a5491955e78b1391d42e5 (patch) | |
| tree | 546f77cb0338c817ef1e34d8ebbc6eaf0e5d6be9 /fs/namespace.c | |
| parent | a05964f3917c7c55368c229d7985f8e7c9977e97 (diff) | |
| download | lwn-a58b0eb8e64b78d9315a5491955e78b1391d42e5.tar.gz lwn-a58b0eb8e64b78d9315a5491955e78b1391d42e5.zip | |
[PATCH] introduce slave mounts
A slave mount always has a master mount from which it receives
mount/umount events. Unlike shared mount the event propagation does not
flow from the slave mount to the master.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 4b1af01c2fb4..46f99bc585bd 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -67,6 +67,8 @@ struct vfsmount *alloc_vfsmnt(const char *name) INIT_LIST_HEAD(&mnt->mnt_list); INIT_LIST_HEAD(&mnt->mnt_expire); INIT_LIST_HEAD(&mnt->mnt_share); + INIT_LIST_HEAD(&mnt->mnt_slave_list); + INIT_LIST_HEAD(&mnt->mnt_slave); if (name) { int size = strlen(name) + 1; char *newname = kmalloc(size, GFP_KERNEL); @@ -1243,7 +1245,7 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, data_page); else if (flags & MS_BIND) retval = do_loopback(&nd, dev_name, flags & MS_REC); - else if (flags & (MS_SHARED | MS_PRIVATE)) + else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE)) retval = do_change_type(&nd, flags); else if (flags & MS_MOVE) retval = do_move_mount(&nd, dev_name); |