From: Jan Blunck <jblunck@xxxxxxx> IS_MNT_UNION() tests whether a vfsmount is a union. Note that a directory in a union mounted file system is not necessarily unioned. Use IS_DIR_UNIONED() to test that. Original-author: Jan Blunck <jblunck@xxxxxxx> Signed-off-by: David Howells <dhowells@xxxxxxxxxx> --- fs/union.h | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/fs/union.h b/fs/union.h index e918a04..990dd16 100644 --- a/fs/union.h +++ b/fs/union.h @@ -51,6 +51,11 @@ struct union_stack { struct path u_dirs[0]; }; +static inline bool IS_MNT_UNION(struct vfsmount *mnt) +{ + return mnt->mnt_flags & MNT_UNION; +} + static inline bool IS_DIR_UNIONED(struct dentry *dentry) { return !!dentry->d_union_stack; @@ -77,6 +82,7 @@ struct path *union_find_dir(struct dentry *dentry, unsigned int layer) return NULL; } +static inline bool IS_MNT_UNION(struct vfsmount *mnt) { return false; } static inline bool IS_DIR_UNIONED(struct dentry *dentry) { return false; } static inline void d_free_unions(struct dentry *dentry) {} -- 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