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Date: Sun, 2 Jun 2024 04:49:21 +0100
From: Matthew Wilcox <willy@infradead.org>
To: Keith Busch <kbusch@kernel.org>
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Subject: Re: [PATCH v4 2/3] rust: block: add rnull, Rust null_blk
 implementation
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On Sat, Jun 01, 2024 at 10:01:40AM -0600, Keith Busch wrote:
> It's fine, just wondering why it's there. But it also allows values like
> 1536 and 3584, which are not valid block sizes, so I think you want the
> check to be:
> 
> 	if !(512..=4096).contains(&block_size) || ((block_size & (block_size - 1)) != 0)

I'd drop the range check.  We're pretty close to landing the bs>PS
patches, so just

	if block_size & block_size - 1 != 0

should be enough of a validation.  Is it considered "good style" in
Rust to omit the brackets here?