From: Oscar Salvador <osalvador@suse.de>
To: Huang Ying <ying.huang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Zi Yan <ziy@nvidia.com>, Yang Shi <shy828301@gmail.com>
Subject: Re: [PATCH -V2 2/7] migrate_pages(): remove unnecessary list_safe_reset_next()
Date: Mon, 11 Jul 2022 13:57:18 +0200 [thread overview]
Message-ID: <YswQHnppYkMq54ZT@localhost.localdomain> (raw)
In-Reply-To: <20220711084948.274787-3-ying.huang@intel.com>
On Mon, Jul 11, 2022 at 04:49:43PM +0800, Huang Ying wrote:
> Before commit b5bade978e9b ("mm: migrate: fix the return value of
> migrate_pages()"), the tail pages of THP will be put in the "from"
> list directly. So one of the loop cursors (page2) needs to be reset,
> as is done in try_split_thp() via list_safe_reset_next(). But after
> the commit, the tail pages of THP will be put in a dedicated
> list (thp_split_pages). That is, the "from" list will not be changed
> during splitting. So, it's unnecessary to call list_safe_reset_next()
> anymore.
>
> This is a code cleanup, no functionality changes are expected.
>
> Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
> Cc: Zi Yan <ziy@nvidia.com>
> Cc: Yang Shi <shy828301@gmail.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
--
Oscar Salvador
SUSE Labs
next prev parent reply other threads:[~2022-07-11 11:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-11 8:49 [PATCH -V2 0/7] migrate_pages(): fix several bugs in error path Huang Ying
2022-07-11 8:49 ` [PATCH -V2 1/7] migrate: fix syscall move_pages() return value for failure Huang Ying
2022-07-11 11:52 ` Oscar Salvador
2022-07-12 0:59 ` Huang, Ying
2022-07-11 8:49 ` [PATCH -V2 2/7] migrate_pages(): remove unnecessary list_safe_reset_next() Huang Ying
2022-07-11 11:57 ` Oscar Salvador [this message]
2022-07-11 8:49 ` [PATCH -V2 3/7] migrate_pages(): fix THP failure counting for -ENOMEM Huang Ying
2022-07-11 12:01 ` Oscar Salvador
2022-07-11 8:49 ` [PATCH -V2 4/7] migrate_pages(): fix failure counting for THP subpages retrying Huang Ying
2022-07-11 12:13 ` Oscar Salvador
2022-07-11 8:49 ` [PATCH -V2 5/7] migrate_pages(): fix failure counting for THP on -ENOSYS Huang Ying
2022-07-11 12:26 ` Oscar Salvador
2022-07-13 8:30 ` Huang, Ying
2022-07-11 8:49 ` [PATCH -V2 6/7] migrate_pages(): fix failure counting for THP splitting Huang Ying
2022-07-11 12:39 ` Oscar Salvador
2022-07-11 8:49 ` [PATCH -V2 7/7] migrate_pages(): fix failure counting for retry Huang Ying
2022-07-11 12:52 ` Oscar Salvador
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