Date: Sat, 5 Nov 2016 23:27:06 +0100
From: Jan Kara <jack@suse.cz>
To: Jens Axboe <axboe@fb.com>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
        jack@suse.cz, hch@lst.de
Subject: Re: [PATCH 1/8] block: add WRITE_BACKGROUND
Message-ID: <20161105222706.GD32353@quack2.suse.cz>
References: <1478034531-28559-1-git-send-email-axboe@fb.com>
 <1478034531-28559-2-git-send-email-axboe@fb.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1478034531-28559-2-git-send-email-axboe@fb.com>
User-Agent: Mutt/1.5.24 (2015-08-30)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1242
Lines: 42

On Tue 01-11-16 15:08:44, Jens Axboe wrote:
> This adds a new request flag, REQ_BACKGROUND, that callers can use to
> tell the block layer that this is background (non-urgent) IO.
> 
> Signed-off-by: Jens Axboe <axboe@fb.com>

Looks good. You can add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  include/linux/blk_types.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
> index bb921028e7c5..562ac46cb790 100644
> --- a/include/linux/blk_types.h
> +++ b/include/linux/blk_types.h
> @@ -177,6 +177,7 @@ enum req_flag_bits {
>  	__REQ_FUA,		/* forced unit access */
>  	__REQ_PREFLUSH,		/* request for cache flush */
>  	__REQ_RAHEAD,		/* read ahead, can fail anytime */
> +	__REQ_BACKGROUND,	/* background IO */
>  	__REQ_NR_BITS,		/* stops here */
>  };
>  
> @@ -192,6 +193,7 @@ enum req_flag_bits {
>  #define REQ_FUA			(1ULL << __REQ_FUA)
>  #define REQ_PREFLUSH		(1ULL << __REQ_PREFLUSH)
>  #define REQ_RAHEAD		(1ULL << __REQ_RAHEAD)
> +#define REQ_BACKGROUND		(1ULL << __REQ_BACKGROUND)
>  
>  #define REQ_FAILFAST_MASK \
>  	(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
> -- 
> 2.7.4
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR