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

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Message-ID: <20180719124013.GB28522@infradead.org>
Date:   Thu, 19 Jul 2018 05:40:13 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Huang Ying <ying.huang@...el.com>
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()

>  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;