linux-kernel - Re: [PATCH v5 01/38] minmax: Add in

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Message-ID: <ZKzohY64KzvT6Xlq@infradead.org>
Date:   Mon, 10 Jul 2023 22:28:37 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 01/38] minmax: Add in_range() macro

On Mon, Jul 10, 2023 at 09:43:02PM +0100, Matthew Wilcox (Oracle) wrote:
> Determine if a value lies within a range more efficiently (subtraction +
> comparison vs two comparisons and an AND).  It also has useful (under
> some circumstances) behaviour if the range exceeds the maximum value of
> the type.

Should this also drop existing versions of in_range()?  E.g. btrfs
already has its own.