linux-kernel - Re: [PATCH v2 1/2] Change DEFINE_SEMAPHORE() to take a number argument

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Message-ID: <ZDYt+PwRjr+BzeBz@bombadil.infradead.org>
Date:   Tue, 11 Apr 2023 21:05:12 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     david@...hat.com, patches@...ts.linux.dev,
        linux-modules@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, pmladek@...e.com,
        petr.pavlu@...e.com, prarit@...hat.com,
        torvalds@...ux-foundation.org, gregkh@...uxfoundation.org,
        rafael@...nel.org, christophe.leroy@...roup.eu, tglx@...utronix.de,
        peterz@...radead.org, song@...nel.org, rppt@...nel.org,
        dave@...olabs.net, vbabka@...e.cz, mhocko@...e.com,
        dave.hansen@...ux.intel.com, colin.i.king@...il.com,
        jim.cromie@...il.com, catalin.marinas@....com, jbaron@...mai.com,
        rick.p.edgecombe@...el.com
Subject: Re: [PATCH v2 1/2] Change DEFINE_SEMAPHORE() to take a number
 argument

On Fri, Apr 07, 2023 at 09:36:30PM +0100, Matthew Wilcox wrote:
> Or this:
> 
> /*
>  * Unlike mutexes, binary semaphores do not have an owner, so up() can
>  * be called in a different thread from the one which called down().
>  * It is also safe to call down_trylock() and up() from interrupt
>  * context.
>  */

I went with that. Thanks for helping me paint this shed!

  Luis