Re: [PATCH v3 2/2] rust: Add read_poll_timeout_atomic function

[Alice Ryhl]

On Sun, Oct 26, 2025 at 09:54:58PM +0900, FUJITA Tomonori wrote:
> Add read_poll_timeout_atomic function which polls periodically until a
> condition is met, an error occurs, or the attempt limit is reached.
> 
> The C's read_poll_timeout_atomic() is used for the similar purpose.
> In atomic context the timekeeping infrastructure is unavailable, so
> reliable time-based timeouts cannot be implemented. So instead, the
> helper accepts a maximum number of attempts and busy-waits (udelay +
> cpu_relax) between tries.
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxx>

Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>