Re: fall back from direct to buffered I/O when stable writes are required

[hch]

On Wed, Nov 12, 2025 at 10:18:40PM +0800, Ming Lei wrote:
> Looks buffer overwrite is actually done by buggy software in guest side,
> why is qemu's trouble? Or will qemu IO emulator write to the IO buffer
> when guest IO is inflight?

It is ultimately caused by the guest.  But just like local software it
is in no way buggy just because you don't like the pattern.