From: Wei Yang <richardw.yang@linux.intel.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richardw.yang@linux.intel.com>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, yang.shi@linux.alibaba.com
Subject: Re: [PATCH 3/8] mm/migrate.c: reform the last call on do_move_pages_to_node()
Date: Tue, 21 Jan 2020 06:27:10 +0800 [thread overview]
Message-ID: <20200120222710.GB32314@richard> (raw)
In-Reply-To: <20200120094608.GN18451@dhcp22.suse.cz>
On Mon, Jan 20, 2020 at 10:46:08AM +0100, Michal Hocko wrote:
>On Sun 19-01-20 11:06:31, Wei Yang wrote:
>> No functional change, just reform it to make it as the same shape as
>> other calls on do_move_pages_to_node().
>>
>> This is a preparation for further cleanup.
>>
>> Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
>> ---
>> mm/migrate.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/mm/migrate.c b/mm/migrate.c
>> index c3ef70de5876..4a63fb8fbb6d 100644
>> --- a/mm/migrate.c
>> +++ b/mm/migrate.c
>> @@ -1675,8 +1675,12 @@ static int do_pages_move(struct mm_struct *mm, nodemask_t task_nodes,
>>
>> /* Make sure we do not overwrite the existing error */
>> err1 = do_move_pages_to_node(mm, &pagelist, current_node);
>> - if (!err1)
>> - err1 = store_status(status, start, current_node, i - start);
>> + if (err1) {
>> + if (err >= 0)
>> + err = err1;
>> + goto out;
>> + }
>> + err1 = store_status(status, start, current_node, i - start);
>
>Please don't. This just makes the code harder to follow. The current err
>and err1 is already quite ugly so do not make it more so.
>
Yes, I struggled a little on doing this change. Sounds we can merge this one
with the following consolidation.
>> if (err >= 0)
>> err = err1;
>> out:
>> --
>> 2.17.1
>
>--
>Michal Hocko
>SUSE Labs
--
Wei Yang
Help you, Help me
next prev parent reply other threads:[~2020-01-20 22:27 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-19 3:06 [PATCH 0/8] mm/migrate.c: cleanup on do_pages_move() Wei Yang
2020-01-19 3:06 ` [PATCH 1/8] mm/migrate.c: skip node check if done in last round Wei Yang
2020-01-20 9:36 ` Michal Hocko
2020-01-20 22:25 ` Wei Yang
2020-01-21 8:42 ` Michal Hocko
2020-01-22 0:36 ` Wei Yang
2020-01-22 8:16 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 2/8] mm/migrate.c: not necessary to check start and i Wei Yang
2020-01-19 22:14 ` David Rientjes
2020-01-20 0:31 ` Wei Yang
2020-01-20 9:45 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 3/8] mm/migrate.c: reform the last call on do_move_pages_to_node() Wei Yang
2020-01-20 9:46 ` Michal Hocko
2020-01-20 22:27 ` Wei Yang [this message]
2020-01-19 3:06 ` [PATCH 4/8] mm/migrate.c: wrap do_move_pages_to_node() and store_status() Wei Yang
2020-01-20 9:49 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 5/8] mm/migrate.c: check pagelist in move_pages_and_store_status() Wei Yang
2020-01-20 9:52 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 6/8] mm/migrate.c: handle same node and add failure in the same way Wei Yang
2020-01-20 10:01 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 7/8] mm/migrate.c: move page on next iteration Wei Yang
2020-01-20 10:02 ` Michal Hocko
2020-01-21 1:22 ` Wei Yang
2020-01-21 8:43 ` Michal Hocko
2020-01-22 0:40 ` Wei Yang
2020-01-22 8:17 ` Michal Hocko
2020-01-19 3:06 ` [PATCH 8/8] mm/migrate.c: use break instead of goto out_flush Wei Yang
2020-01-20 10:03 ` Michal Hocko
2020-01-21 1:22 ` Wei Yang
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