linux-kernel - Re: [PATCH 1/3] Add flag to identify block swap devices

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Message-ID: <AANLkTikvu85a6Ckl-iJaF_iHlCCsK9tMRYoT21EeZ_CV@mail.gmail.com>
Date:	Mon, 17 May 2010 20:50:03 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Nitin Gupta <ngupta@...are.org>
Cc:	Greg KH <greg@...ah.com>, Pekka Enberg <penberg@...helsinki.fi>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nigel Cunningham <nigel@...onice.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Cyp <cyp561@...il.com>, driverdev <devel@...verdev.osuosl.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] Add flag to identify block swap devices

On Mon, May 17, 2010 at 2:32 PM, Nitin Gupta <ngupta@...are.org> wrote:
> Added SWP_BLKDEV flag to distinguish block and regular file backed
> swap devices. We could also check if a swap is entire block device,
> rather than a file, by:
> S_ISBLK(swap_info_struct->swap_file->f_mapping->host->i_mode)
> but, I think, simply checking this flag is more convenient.
>
> Signed-off-by: Nitin Gupta <ngupta@...are.org>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

We can enhance swap_show by the flag as further patch.

-- 
Kind regards,
Minchan Kim
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