From: Hannes Reinecke <hare@suse.de>
To: Damien Le Moal <damien.lemoal@wdc.com>,
linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
linux-scsi@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>,
linux-f2fs-devel@lists.sourceforge.net,
Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>
Subject: Re: [PATCH 3/9] block: Simplify report zones execution
Date: Fri, 8 Nov 2019 08:12:25 +0100 [thread overview]
Message-ID: <c496ebf7-9f1a-7777-b961-378f3155f3fe@suse.de> (raw)
In-Reply-To: <20191108015702.233102-4-damien.lemoal@wdc.com>
On 11/8/19 2:56 AM, Damien Le Moal wrote:
> All kernel users of blkdev_report_zones() as well as applications use
> through ioctl(BLKZONEREPORT) expect to potentially get less zone
> descriptors than requested. As such, the use of the internal report
> zones command execution loop implemented by blk_report_zones() is
> not necessary and can even be harmful to performance by causing the
> execution of inefficient small zones report command to service the
> reminder of a requested zone array.
>
> This patch removes blk_report_zones(), simplifying the code. Also
> remove a now incorrect comment in dm_blk_report_zones().
>
> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Javier Gonzalez <javier@javigon.com>
> ---
> block/blk-zoned.c | 34 +++++-----------------------------
> drivers/md/dm.c | 6 ------
> 2 files changed, 5 insertions(+), 35 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer
next prev parent reply other threads:[~2019-11-08 7:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 1:56 [PATCH 0/9] Zoned block device enhancements and zone report rework Damien Le Moal
2019-11-08 1:56 ` [PATCH 1/9] block: Enhance blk_revalidate_disk_zones() Damien Le Moal
2019-11-08 6:28 ` [dm-devel] " Christoph Hellwig
2019-11-08 7:10 ` Hannes Reinecke
2019-11-08 1:56 ` [PATCH 2/9] block: cleanup the !zoned case in blk_revalidate_disk_zones Damien Le Moal
2019-11-08 7:11 ` Hannes Reinecke
2019-11-08 18:50 ` Chaitanya Kulkarni
2019-11-08 1:56 ` [PATCH 3/9] block: Simplify report zones execution Damien Le Moal
2019-11-08 7:12 ` Hannes Reinecke [this message]
2019-11-08 1:56 ` [PATCH 4/9] block: Remove partition support for zoned block devices Damien Le Moal
2019-11-08 6:30 ` [dm-devel] " Christoph Hellwig
2019-11-08 7:17 ` Hannes Reinecke
2019-11-08 7:28 ` Damien Le Moal
2019-11-08 1:56 ` [PATCH 5/9] null_blk: clean up the block device operations Damien Le Moal
2019-11-08 7:17 ` Hannes Reinecke
2019-11-08 18:47 ` Chaitanya Kulkarni
2019-11-08 1:56 ` [PATCH 6/9] null_blk: clean up report zones Damien Le Moal
2019-11-08 7:18 ` Hannes Reinecke
2019-11-08 18:47 ` Chaitanya Kulkarni
2019-11-08 1:57 ` [PATCH 7/9] null_blk: Add zone_nr_conv to features Damien Le Moal
2019-11-08 7:18 ` Hannes Reinecke
2019-11-08 18:48 ` Chaitanya Kulkarni
2019-11-08 1:57 ` [PATCH 8/9] scsi: sd_zbc: Cleanup sd_zbc_alloc_report_buffer() Damien Le Moal
2019-11-08 6:31 ` [dm-devel] " Christoph Hellwig
2019-11-08 7:20 ` Hannes Reinecke
2019-11-08 19:06 ` [dm-devel] " Bart Van Assche
2019-11-09 2:54 ` Damien Le Moal
2019-11-09 3:02 ` Bart Van Assche
2019-11-08 1:57 ` [PATCH 9/9] block: rework zone reporting Damien Le Moal
2019-11-08 7:23 ` Hannes Reinecke
2019-11-08 15:16 ` Mike Snitzer
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