On Tue, Dec 12, 2023 at 11:08:33AM +0000, John Garry wrote: > Add file mode flag FMODE_CAN_ATOMIC_WRITE, so files which do not have the > flag set will have RWF_ATOMIC rejected and not just ignored. > > Signed-off-by: Prasad Singamsetty <prasad.singamsetty@xxxxxxxxxx> > Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx> > --- > include/linux/fs.h | 8 ++++++++ > include/uapi/linux/fs.h | 5 ++++- > 2 files changed, 12 insertions(+), 1 deletion(-) > > diff --git a/include/linux/fs.h b/include/linux/fs.h > index 70329c81be31..d725c194243c 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -185,6 +185,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, > /* File supports async nowait buffered writes */ > #define FMODE_BUF_WASYNC ((__force fmode_t)0x80000000) > > +/* File supports atomic writes */ > +#define FMODE_CAN_ATOMIC_WRITE ((__force fmode_t)0x100000000) Have you even tried to compile that on e.g. arm?
