On Mon, Jul 28, 2025 at 07:37:02PM +0800, Edward Adam Davis wrote: > The writer and reader access FAT32 entry without any lock, so the data > obtained by the reader is incomplete. Could you be more specific? "Incomplete" in which sense? > Add spin lock to solve the race condition that occurs when accessing > FAT32 entry. Which race condition would that be? > FAT16 entry has the same issue and is handled together. FWIW, I strongly suspect that * "issue" with FAT32 is a red herring coming from mindless parroting of dumb tool output * issue with FAT16 just might be real, if architecture-specific. If 16bit stores are done as 32bit read-modify-write, we might need some serialization. Assuming we still have such architectures, that is - alpha used to be one, but support for pre-BWX models got dropped. Sufficiently ancient ARM?
