On Sun Oct 11, 2026 at 1:52 PM BST, Thomas Weißschuh wrote: > The descriptor flags are accessed concurrently. Use > READ_ONCE()/WRITE_ONCE() to keep their contents consistent. > > Signed-off-by: Thomas Weißschuh <[email protected]> > > --- > I am not entirely sure about this. We are only using single bits, so > torn reads/writes should not matter. But LKMM has no guidance on this as > far as I can see. Also for Rust this seems to be necessary.
Code should assume plain writes to be atomic. Concurrently accessed data should use READ_ONCE/WRITE_ONCE so you're right on this one. I think this patch should be merged with the bitfield definition change, though. Best, Gary > --- > include/linux/dynamic_debug.h | 6 +++--- > lib/dynamic_debug.c | 24 +++++++++++++----------- > 2 files changed, 16 insertions(+), 14 deletions(-) >
