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authorRam Pai <linuxram@us.ibm.com>2005-11-07 17:19:50 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 18:18:11 -0800
commitb90fa9ae8f51f098ee480bbaabd6867992e9fc58 (patch)
tree2ad583b3a7399face7a78730b001928413c8269e /fs/pnode.h
parent03e06e68ff76294e53ffa898cb844d2a997b043e (diff)
downloadkernel-b90fa9ae8f51f098ee480bbaabd6867992e9fc58.tar.gz
[PATCH] shared mount handling: bind and rbind
Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). 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.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/pnode.h b/fs/pnode.h
index ab1bdaee4e08..c62c72fad212 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -12,7 +12,21 @@
#include <linux/mount.h>
#define IS_MNT_SHARED(mnt) (mnt->mnt_flags & MNT_SHARED)
+#define IS_MNT_NEW(mnt) (!mnt->mnt_namespace)
#define CLEAR_MNT_SHARED(mnt) (mnt->mnt_flags &= ~MNT_SHARED)
+#define CL_EXPIRE 0x01
+#define CL_COPY_ALL 0x04
+#define CL_MAKE_SHARED 0x08
+#define CL_PROPAGATION 0x10
+
+static inline void set_mnt_shared(struct vfsmount *mnt)
+{
+ mnt->mnt_flags &= ~MNT_PNODE_MASK;
+ mnt->mnt_flags |= MNT_SHARED;
+}
+
void change_mnt_propagation(struct vfsmount *, int);
+int propagate_mnt(struct vfsmount *, struct dentry *, struct vfsmount *,
+ struct list_head *);
#endif /* _LINUX_PNODE_H */