On Fri, Feb 25, 2022 at 07:54:28PM +0100, Max Kellermann wrote: > diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h > index c00c618ef290..0e36a58adf0e 100644 > --- a/include/linux/pipe_fs_i.h > +++ b/include/linux/pipe_fs_i.h > @@ -2,6 +2,9 @@ > #ifndef _LINUX_PIPE_FS_I_H > #define _LINUX_PIPE_FS_I_H > > +#include <linux/mutex.h> > +#include <linux/wait.h> TBH, I'd rather avoid breeding chain includes; sure, mutex.h and wait.h are extremely common anyway. Oh, well....