From: Andrew Morton <akpm@linux-foundation.org>
To: Miaohe Lin <linmiaohe@huawei.com>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm/mempool: Add 'else' to split mutually exclusive case
Date: Mon, 24 Aug 2020 12:18:40 -0700 [thread overview]
Message-ID: <20200824121840.4cd7eb3dce03e8e1473221b3@linux-foundation.org> (raw)
In-Reply-To: <20200824115354.7879-1-linmiaohe@huawei.com>
On Mon, 24 Aug 2020 07:53:54 -0400 Miaohe Lin <linmiaohe@huawei.com> wrote:
> Add else to split mutually exclusive case and avoid some unnecessary check.
>
> --- a/mm/mempool.c
> +++ b/mm/mempool.c
> @@ -60,9 +60,8 @@ static void check_element(mempool_t *pool, void *element)
> /* Mempools backed by slab allocator */
> if (pool->free == mempool_free_slab || pool->free == mempool_kfree)
> __check_element(pool, element, ksize(element));
> -
> /* Mempools backed by page allocator */
> - if (pool->free == mempool_free_pages) {
> + else if (pool->free == mempool_free_pages) {
> int order = (int)(long)pool->pool_data;
> void *addr = kmap_atomic((struct page *)element);
>
It doesn't seem to change code generation (compiler is smart), but I
think it helps readability.
next prev parent reply other threads:[~2020-08-24 19:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 11:53 Miaohe Lin
2020-08-24 19:18 ` Andrew Morton [this message]
2020-08-24 19:22 ` Matthew Wilcox
2020-08-24 19:27 ` Joe Perches
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200824121840.4cd7eb3dce03e8e1473221b3@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=linmiaohe@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox