linux-kernel - Re: [PATCH 3.16 100/133] bcache: correct cache_dirty_target in __update_writeback

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Message-ID: <1511322103.6989.46.camel@perches.com>
Date:   Tue, 21 Nov 2017 19:41:43 -0800
From:   Joe Perches <joe@...ches.com>
To:     Ben Hutchings <ben@...adent.org.uk>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Cc:     akpm@...ux-foundation.org, Coly Li <colyli@...e.de>,
        Tang Junhui <tang.junhui@....com.cn>,
        Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH 3.16 100/133] bcache: correct cache_dirty_target in
 __update_writeback_rate()

On Wed, 2017-11-22 at 01:58 +0000, Ben Hutchings wrote:
> 3.16.51-rc1 review patch.  If anyone has any objections, please let me know.
[]
> --- a/drivers/md/bcache/writeback.h
> +++ b/drivers/md/bcache/writeback.h
> @@ -14,6 +14,25 @@ static inline uint64_t bcache_dev_sector
>  	return ret;
>  }
>  
> +static inline uint64_t  bcache_flash_devs_sectors_dirty(struct cache_set *c)
> +{
> +	uint64_t i, ret = 0;

There's no reason i should be uint64_t
as nr_uuids is unsigned int.

> +
> +	mutex_lock(&bch_register_lock);
> +
> +	for (i = 0; i < c->nr_uuids; i++) {
> +		struct bcache_device *d = c->devices[i];
> +
> +		if (!d || !UUID_FLASH_ONLY(&c->uuids[i]))
> +			continue;
> +	   ret += bcache_dev_sectors_dirty(d);
> +	}
> +
> +	mutex_unlock(&bch_register_lock);
> +
> +	return ret;
> +}
> +
>  static inline unsigned offset_to_stripe(struct bcache_device *d,
>  					uint64_t offset)
>  {
>