From: Valerie Aurora <vaurora@xxxxxxxxxx> Passing the CL_NO_SLAVE flag to clone_mnt() causes the clone to fail if the source mnt is a slave. Cc: Ram Pai <linuxram@xxxxxxxxxx> Signed-off-by: Valerie Aurora <valerie.aurora@xxxxxxxxx> --- fs/namespace.c | 3 +++ fs/pnode.h | 1 + 2 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index df604ea..454d7ad 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -599,6 +599,9 @@ static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root, if ((flag & CL_NO_SHARED) && (IS_MNT_SHARED(old))) return ERR_PTR(-EINVAL); + if ((flag & CL_NO_SLAVE) && (IS_MNT_SLAVE(old))) + return ERR_PTR(-EINVAL); + mnt = alloc_vfsmnt(old->mnt_devname); if (!mnt) return ERR_PTR(-ENOMEM); diff --git a/fs/pnode.h b/fs/pnode.h index bcb3c47..8920e47 100644 --- a/fs/pnode.h +++ b/fs/pnode.h @@ -23,6 +23,7 @@ #define CL_MAKE_SHARED 0x08 #define CL_PRIVATE 0x10 #define CL_NO_SHARED 0x20 +#define CL_NO_SLAVE 0x40 static inline void set_mnt_shared(struct vfsmount *mnt) { -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html