summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorRam Pai <linuxram@us.ibm.com>2005-11-08 01:20:48 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-08 05:18:11 +0300
commita58b0eb8e64b78d9315a5491955e78b1391d42e5 (patch)
tree546f77cb0338c817ef1e34d8ebbc6eaf0e5d6be9 /include
parenta05964f3917c7c55368c229d7985f8e7c9977e97 (diff)
downloadlinux-a58b0eb8e64b78d9315a5491955e78b1391d42e5.tar.xz
[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 'include')
-rw-r--r--include/linux/fs.h1
-rw-r--r--include/linux/mount.h3
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8bdb504be73b..eef66f54c017 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -105,6 +105,7 @@ extern int dir_notify_enable;
#define MS_REC 16384
#define MS_VERBOSE 32768
#define MS_PRIVATE (1<<18) /* change to private */
+#define MS_SLAVE (1<<19) /* change to slave */
#define MS_SHARED (1<<20) /* change to shared */
#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
#define MS_ACTIVE (1<<30)
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 2582559718fc..7e133ae2a94f 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -38,6 +38,9 @@ struct vfsmount {
struct list_head mnt_list;
struct list_head mnt_expire; /* link in fs-specific expiry list */
struct list_head mnt_share; /* circular list of shared mounts */
+ struct list_head mnt_slave_list;/* list of slave mounts */
+ struct list_head mnt_slave; /* slave list entry */
+ struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */
struct namespace *mnt_namespace; /* containing namespace */
int mnt_pinned;
};