linux-kernel - Re: [PATCH] lib/find_bit: Add find_prev_*

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Message-ID: <c79b08e9-d36a-849e-d023-6fa155043aa9@rasmusvillemoes.dk>
Date:   Wed, 2 Dec 2020 11:04:37 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Yun Levi <ppbuk5246@...il.com>
Cc:     dushistov@...l.ru, arnd@...db.de, akpm@...ux-foundation.org,
        gustavo@...eddedor.com, vilhelm.gray@...il.com,
        richard.weiyang@...ux.alibaba.com, joseph.qi@...ux.alibaba.com,
        skalluru@...vell.com, yury.norov@...il.com, jpoimboe@...hat.com,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH] lib/find_bit: Add find_prev_*_bit functions.

On 02/12/2020 10.47, Andy Shevchenko wrote:
> On Wed, Dec 02, 2020 at 10:10:09AM +0900, Yun Levi wrote:
>> Inspired find_next_*bit function series, add find_prev_*_bit series.
>> I'm not sure whether it'll be used right now But, I add these functions
>> for future usage.
> 
> This patch has few issues:
> - it has more things than described (should be several patches instead)
> - new functionality can be split logically to couple or more pieces as well
> - it proposes functionality w/o user (dead code)

Yeah, the last point means it can't be applied - please submit it again
if and when you have an actual use case. And I'll add

- it lacks extension of the bitmap test module to cover the new
functions (that also wants to be a separate patch).

Rasmus