linux-kernel - Re: [PATCH v3 4/8] swap: Unify normal/huge code path in swap_page_trans_huge

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Date:   Fri, 20 Jul 2018 08:26:48 +0800
From:   "Huang\, Ying" <ying.huang@...el.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, Michal Hocko <mhocko@...e.com>,
        "Johannes Weiner" <hannes@...xchg.org>,
        Shaohua Li <shli@...nel.org>, Hugh Dickins <hughd@...gle.com>,
        Minchan Kim <minchan@...nel.org>,
        Rik van Riel <riel@...hat.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>
Subject: Re: [PATCH v3 4/8] swap: Unify normal/huge code path in swap_page_trans_huge_swapped()

Christoph Hellwig <hch@...radead.org> writes:

>>  static inline bool cluster_is_huge(struct swap_cluster_info *info)
>>  {
>> -	return info->flags & CLUSTER_FLAG_HUGE;
>> +	if (IS_ENABLED(CONFIG_THP_SWAP))
>> +		return info->flags & CLUSTER_FLAG_HUGE;
>> +	else
>> +		return false;
>
> Nitpick: no need for an else after a return:
>
> 	if (IS_ENABLED(CONFIG_THP_SWAP))
> 		return info->flags & CLUSTER_FLAG_HUGE;
> 	return false;

Sure.  Will change this in next version.

Best Regards,
Huang, Ying