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From: Damien Le Moal <Damien.LeMoal@wdc.com>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH v2 1/3] zonefs: introduce helper for zone management
Date: Wed, 9 Sep 2020 12:43:28 +0000	[thread overview]
Message-ID: <CY4PR04MB375130E0FFC0A1438D346E89E7260@CY4PR04MB3751.namprd04.prod.outlook.com> (raw)
In-Reply-To: <20200909102614.40585-2-johannes.thumshirn@wdc.com>

On 2020/09/09 19:26, Johannes Thumshirn wrote:
> Introduce a helper function for sending zone management commands to the
> block device.
> 
> As zone management commands can change a zone write pointer position
> reflected in the size of the zone file, this function expects the truncate
> mutex to be held.
> 
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
> 
> ---
> Changes to v1:
> - centralize failure logging
> ---
>  fs/zonefs/super.c | 29 ++++++++++++++++++++++-------
>  1 file changed, 22 insertions(+), 7 deletions(-)
> 
> diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
> index 8ec7c8f109d7..dc828bd1210b 100644
> --- a/fs/zonefs/super.c
> +++ b/fs/zonefs/super.c
> @@ -24,6 +24,26 @@
>  
>  #include "zonefs.h"
>  
> +static inline int zonefs_zone_mgmt(struct inode *inode,
> +				   enum req_opf op)
> +{
> +	struct zonefs_inode_info *zi = ZONEFS_I(inode);
> +	int ret;
> +
> +	lockdep_assert_held(&zi->i_truncate_mutex);
> +
> +	ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,
> +			       zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);
> +	if (ret) {
> +		zonefs_err(inode->i_sb,
> +			   "Zone management operation %s at %llu failed %d",

It looks like it was not there in the first place, but there is a "\n" missing
at the end of the format string.

> +			   blk_op_str(op), zi->i_zsector, ret);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
>  static int zonefs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
>  			      unsigned int flags, struct iomap *iomap,
>  			      struct iomap *srcmap)
> @@ -397,14 +417,9 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize)
>  	if (isize == old_isize)
>  		goto unlock;
>  
> -	ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,
> -			       zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);
> -	if (ret) {
> -		zonefs_err(inode->i_sb,
> -			   "Zone management operation at %llu failed %d",
> -			   zi->i_zsector, ret);
> +	ret = zonefs_zone_mgmt(inode, op);
> +	if (ret)
>  		goto unlock;
> -	}
>  
>  	zonefs_update_stats(inode, isize);
>  	truncate_setsize(inode, isize);
> 

Apart from the nit above, looks good.

Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>

-- 
Damien Le Moal
Western Digital Research

  reply	other threads:[~2020-09-09 12:54 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-09 10:26 [PATCH v2 0/3] zonefs: introduce -o explicit-open mount option Johannes Thumshirn
2020-09-09 10:26 ` [PATCH v2 1/3] zonefs: introduce helper for zone management Johannes Thumshirn
2020-09-09 12:43   ` Damien Le Moal [this message]
2020-09-09 14:43     ` Johannes Thumshirn
2020-09-09 10:26 ` [PATCH v2 2/3] zonefs: open/close zone on file open/close Johannes Thumshirn
2020-09-09 12:50   ` Damien Le Moal
2020-09-09 10:26 ` [PATCH v2 3/3] zonefs: document the explicit-open mount option Johannes Thumshirn
2020-09-09 12:52   ` Damien Le Moal
2020-09-09 12:52 ` [PATCH v2 0/3] zonefs: introduce -o " Damien Le Moal
2020-09-09 14:43   ` Johannes Thumshirn

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