Re: [PATCH] block: use enumerate instead of integer in op_is_write()

[Christoph Hellwig]

On Fri, Aug 20, 2021 at 09:55:12AM +0800, brookxu wrote:
> From: Chunguang Xu <brookxu@xxxxxxxxxxx>
> 
> For mask operation, using enumerate may be safer than integer.

Except that we are explicitly checking for least significant bit as
that is part of the encoding, not a specific enum value.