From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Nick Desaulniers <nick.desaulniers@gmail.com>,
Nitin Gupta <ngupta@vflare.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
linux-mm <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] zsmalloc: use U suffix for negative literals being shifted
Date: Mon, 8 Jan 2018 01:02:09 +0200 [thread overview]
Message-ID: <CAHp75VdjBnd=yr9YDPvf0P-e6ofoJwi8d-iOehoP=vuj9rnB8w@mail.gmail.com> (raw)
In-Reply-To: <CAEwNFnC9FA44y1vCWmm=LEyQHjJC=Sd8GzbYgY6rS9h9i2HOiw@mail.gmail.com>
On Sun, Jan 7, 2018 at 5:04 PM, Minchan Kim <minchan@kernel.org> wrote:
>> - link->next = -1 << OBJ_TAG_BITS;
>> + link->next = -1U << OBJ_TAG_BITS;
>
> -1UL?
Oh, boy, shouldn't be rather GENMASK() / GENMASK_ULL() in a way how
it's done, for example, here:
https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git/commit/?h=for-next&id=d2b3c353595a855794f8b9df5b5bdbe8deb0c413
--
With Best Regards,
Andy Shevchenko
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next prev parent reply other threads:[~2018-01-07 23:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-24 2:33 [PATCH] zsmalloc: use U suffix for negative literals being shifted Nick Desaulniers
2017-12-24 3:24 ` Matthew Wilcox
2017-12-24 3:28 ` Nick Desaulniers
2018-01-06 20:40 ` Nick Desaulniers
2018-01-07 15:04 ` Minchan Kim
2018-01-07 23:02 ` Andy Shevchenko [this message]
2018-01-09 4:35 ` Nick Desaulniers
2018-01-10 5:53 ` Minchan Kim
2018-01-11 3:41 ` [PATCH v2] " Nick Desaulniers
2018-01-11 7:06 ` Sergey Senozhatsky
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