Linux SCSI subsystem development
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From: Christoph Hellwig <hch@lst.de>
To: Damien Le Moal <dlemoal@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	linux-scsi@vger.kernel.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Subject: Re: [PATCH v5 3/9] block: introduce storage element management
Date: Mon, 12 Oct 2026 16:23:41 +0200	[thread overview]
Message-ID: <20261012142341.GA8609@lst.de> (raw)
In-Reply-To: <20261012130121.1902634-4-dlemoal@kernel.org>

On Mon, Oct 12, 2026 at 10:01:15PM +0900, Damien Le Moal wrote:
> +static int disk_check_remove_error(struct gendisk *disk,
> +				   struct blk_se *elements,
> +				   unsigned int element_id)
> +{
> +	unsigned int i;
> +
> +	for (i = 0; i < disk->nr_storage_elements; i++) {
> +		if (elements[i].id == element_id
> +		    && elements[i].status == BLK_SE_STS_REMOVE_ERROR)

kernel style places the && on the previous line.

> +	noio_flag = memalloc_noio_save();
> +	elements = kzalloc_objs(struct blk_se, disk->nr_storage_elements);
> +	memalloc_noio_restore(noio_flag);

This is a bit odd, we can still use GFP_NOIO for now, but if we
want to use the scope API, I'd expect it to be used higher level and
not over a single call.  Of course not a bug, but somewhat strange
looking code.

The rest looks good.  I think the Sashiko comment is a bit confused,
as the code explicitly just flushes with a freeze/unfreeze, so
extending the scope is a strange suggestion.

  parent reply	other threads:[~2026-10-12 14:23 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-12 13:01 [PATCH v5 0/9] Add support for storage element depopulation Damien Le Moal
2026-10-12 13:01 ` [PATCH v5 1/9] block: introduce disk_zone_is_offline() Damien Le Moal
2026-10-12 13:01 ` [PATCH v5 2/9] block: refactor blk_revalidate_disk_zones() Damien Le Moal
2026-10-12 13:01 ` [PATCH v5 3/9] block: introduce storage element management Damien Le Moal
2026-10-12 13:23   ` sashiko-bot
2026-10-12 13:27     ` Damien Le Moal
2026-10-12 14:23   ` Christoph Hellwig [this message]
2026-10-12 13:01 ` [PATCH v5 4/9] block: add storage element management ioctls Damien Le Moal
2026-10-12 13:40   ` sashiko-bot
2026-10-12 13:49     ` Damien Le Moal
2026-10-12 14:31   ` Christoph Hellwig
2026-10-12 14:56     ` Damien Le Moal
2026-10-12 14:57       ` Christoph Hellwig
2026-10-12 14:59         ` Damien Le Moal
2026-10-12 13:01 ` [PATCH v5 5/9] zloop: add storage element emulation Damien Le Moal
2026-10-12 13:52   ` sashiko-bot
2026-10-12 13:01 ` [PATCH v5 6/9] zloop: add degrade_element control command Damien Le Moal
2026-10-12 14:02   ` sashiko-bot
2026-10-12 14:43   ` Christoph Hellwig
2026-10-12 13:01 ` [PATCH v5 7/9] scsi: sd: fail read commands to offline zones early Damien Le Moal
2026-10-12 14:36   ` Christoph Hellwig
2026-10-12 13:01 ` [PATCH v5 8/9] scsi: sd_zbc: always revalidate zones for disks supporting head depopulation Damien Le Moal
2026-10-12 14:19   ` sashiko-bot
2026-10-12 14:37   ` Christoph Hellwig
2026-10-12 14:57     ` Damien Le Moal
2026-10-12 13:01 ` [PATCH v5 9/9] scsi: sd_zbc: define storage element management operations Damien Le Moal
2026-10-12 14:38   ` Christoph Hellwig

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