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authorRam Pai <linuxram@us.ibm.com>2005-11-07 17:19:33 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 18:18:10 -0800
commit03e06e68ff76294e53ffa898cb844d2a997b043e (patch)
treedf17444b2c9b89e1eed75e09d46ea36c40ebd1df /fs/pnode.h
parent07b20889e3052c7e77d6a6a54e7e83446eb1ba84 (diff)
downloadkernel-03e06e68ff76294e53ffa898cb844d2a997b043e.tar.gz
[PATCH] introduce shared mounts
This creates shared mounts. A shared mount when bind-mounted to some mountpoint, propagates mount/umount events to each other. All the shared mounts that propagate events to each other belong to the same peer-group. 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/pnode.h')
-rw-r--r--fs/pnode.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/pnode.h b/fs/pnode.h
index 33549a3a74eb..ab1bdaee4e08 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -10,5 +10,9 @@
#include <linux/list.h>
#include <linux/mount.h>
+
+#define IS_MNT_SHARED(mnt) (mnt->mnt_flags & MNT_SHARED)
+#define CLEAR_MNT_SHARED(mnt) (mnt->mnt_flags &= ~MNT_SHARED)
+
void change_mnt_propagation(struct vfsmount *, int);
#endif /* _LINUX_PNODE_H */