linux-kernel - Re: [PATCH v3 1/8] swap: Add comments to lock_cluster_or_swap

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Message-ID: <20180719123908.GA28522@infradead.org>
Date:   Thu, 19 Jul 2018 05:39:08 -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 1/8] swap: Add comments to lock_cluster_or_swap_info()

On Thu, Jul 19, 2018 at 04:48:35PM +0800, Huang Ying wrote:
> +/*
> + * Determine the locking method in use for this device.  Return
> + * swap_cluster_info if SSD-style cluster-based locking is in place.
> + */
>  static inline struct swap_cluster_info *lock_cluster_or_swap_info(
>  	struct swap_info_struct *si,
>  	unsigned long offset)
>  {
>  	struct swap_cluster_info *ci;
>  
> +	/* Try to use fine-grained SSD-style locking if available: */

Once you touch this are can you also please use standard two-tab
alignment for the spill-over function arguments:

static inline struct swap_cluster_info *lock_cluster_or_swap_info(
		struct swap_info_struct *si, unsigned long offset)