Re: [PATCH v3 2/5] dm: dm-zoned: guard blkdev_zone_mgmt with noio scope

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On 1/29/24 16:52, Johannes Thumshirn wrote:
> Guard the calls to blkdev_zone_mgmt() with a memalloc_noio scope.
> This helps us getting rid of the GFP_NOIO argument to blkdev_zone_mgmt();
> 
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>

Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>

> ---
>  drivers/md/dm-zoned-metadata.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
> index fdfe30f7b697..165996cc966c 100644
> --- a/drivers/md/dm-zoned-metadata.c
> +++ b/drivers/md/dm-zoned-metadata.c
> @@ -1655,10 +1655,13 @@ static int dmz_reset_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
>  
>  	if (!dmz_is_empty(zone) || dmz_seq_write_err(zone)) {
>  		struct dmz_dev *dev = zone->dev;
> +		unsigned int noio_flag;
>  
> +		noio_flag = memalloc_noio_save();
>  		ret = blkdev_zone_mgmt(dev->bdev, REQ_OP_ZONE_RESET,
>  				       dmz_start_sect(zmd, zone),
> -				       zmd->zone_nr_sectors, GFP_NOIO);
> +				       zmd->zone_nr_sectors, GFP_KERNEL);
> +		memalloc_noio_restore(noio_flag);
>  		if (ret) {
>  			dmz_dev_err(dev, "Reset zone %u failed %d",
>  				    zone->id, ret);
> 

-- 
Damien Le Moal
Western Digital Research





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