From: Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>
To: Damien Le Moal <Damien.LeMoal@wdc.com>,
"dm-devel@redhat.com" <dm-devel@redhat.com>,
Mike Snitzer <snitzer@redhat.com>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH v3 01/11] block: improve handling of all zones reset operation
Date: Mon, 24 May 2021 00:30:26 +0000 [thread overview]
Message-ID: <BYAPR04MB49655F14C3C880B508D4B90886269@BYAPR04MB4965.namprd04.prod.outlook.com> (raw)
In-Reply-To: 20210521030119.1209035-2-damien.lemoal@wdc.com
On 5/20/21 20:01, Damien Le Moal wrote:
> +static int blkdev_zone_reset_all_emulated(struct block_device *bdev,
> + gfp_t gfp_mask)
> +{
> + struct request_queue *q = bdev_get_queue(bdev);
> + sector_t capacity = get_capacity(bdev->bd_disk);
> + sector_t zone_sectors = blk_queue_zone_sectors(q);
> + unsigned long *need_reset;
> + struct bio *bio = NULL;
> + sector_t sector;
> + int ret;
> +
> + need_reset = blk_alloc_zone_bitmap(q->node, q->nr_zones);
> + if (!need_reset)
> + return -ENOMEM;
> +
> + ret = bdev->bd_disk->fops->report_zones(bdev->bd_disk, 0,
> + q->nr_zones, blk_zone_need_reset_cb,
> + need_reset);
> + if (ret < 0)
> + goto out_free_need_reset;
> +
> + ret = 0;
> + while (sector < capacity) {
Garbage value of sector variable used in above comparison ?
If so consider initializing at the time of declaration.
> + if (!test_bit(blk_queue_zone_no(q, sector), need_reset)) {
> + sector += zone_sectors;
> + continue;
> + }
> + bio = blk_next_bio(bio, 0, gfp_mask);
> + bio_set_dev(bio, bdev);
> + bio->bi_opf = REQ_OP_ZONE_RESET | REQ_SYNC;
> + bio->bi_iter.bi_sector = sector;
> + sector += zone_sectors;
> +
> + /* This may take a while, so be nice to others */
> + cond_resched();
> + }
> +
> + if (bio) {
> + ret = submit_bio_wait(bio);
> + bio_put(bio);
> + }
> +
> +out_free_need_reset:
> + kfree(need_reset);
> + return ret;
> +}
next prev parent reply other threads:[~2021-05-24 0:30 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 3:01 [PATCH v3 00/11] dm: Improve zoned block device support Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 01/11] block: improve handling of all zones reset operation Damien Le Moal
2021-05-21 5:13 ` Johannes Thumshirn
2021-05-24 0:30 ` Chaitanya Kulkarni [this message]
2021-05-21 3:01 ` [PATCH v3 02/11] block: introduce bio zone helpers Damien Le Moal
2021-05-21 5:06 ` Johannes Thumshirn
2021-05-24 2:24 ` Chaitanya Kulkarni
2021-05-21 3:01 ` [PATCH v3 03/11] block: introduce BIO_ZONE_WRITE_LOCKED bio flag Damien Le Moal
2021-05-24 2:24 ` Chaitanya Kulkarni
2021-05-21 3:01 ` [PATCH v3 04/11] dm: Fix dm_accept_partial_bio() Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 05/11] dm: cleanup device_area_is_invalid() Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 06/11] dm: move zone related code to dm-zone.c Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 07/11] dm: Introduce dm_report_zones() Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 08/11] dm: Forbid requeue of writes to zones Damien Le Moal
2021-05-21 5:10 ` Johannes Thumshirn
2021-05-21 3:01 ` [PATCH v3 09/11] dm: rearrange core declarations Damien Le Moal
2021-05-21 5:09 ` Johannes Thumshirn
2021-05-21 3:01 ` [PATCH v3 10/11] dm: introduce zone append emulation Damien Le Moal
2021-05-21 3:01 ` [PATCH v3 11/11] dm crypt: Fix zoned block device support Damien Le Moal
2021-05-21 5:07 ` Johannes Thumshirn
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