From: Jan Kara <jack@suse.cz>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Song Liu <song@kernel.org>,
Hans de Goede <hdegoede@redhat.com>,
Richard Weinberger <richard@nod.at>,
Minchan Kim <minchan@kernel.org>,
linux-mtd@lists.infradead.org, dm-devel@redhat.com,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
cgroups@vger.kernel.org
Subject: Re: [PATCH 02/12] drbd: remove dead code in device_to_statistics
Date: Thu, 17 Sep 2020 11:46:15 +0200 [thread overview]
Message-ID: <20200917094615.GI7347@quack2.suse.cz> (raw)
In-Reply-To: <20200910144833.742260-3-hch@lst.de>
On Thu 10-09-20 16:48:22, Christoph Hellwig wrote:
> Ever since the switch to blk-mq, a lower device not used for VM
> writeback will not be marked congested, so the check will never
> trigger.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks good to me. You can add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> drivers/block/drbd/drbd_nl.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
> index 43c8ae4d9fca81..aaff5bde391506 100644
> --- a/drivers/block/drbd/drbd_nl.c
> +++ b/drivers/block/drbd/drbd_nl.c
> @@ -3370,7 +3370,6 @@ static void device_to_statistics(struct device_statistics *s,
> if (get_ldev(device)) {
> struct drbd_md *md = &device->ldev->md;
> u64 *history_uuids = (u64 *)s->history_uuids;
> - struct request_queue *q;
> int n;
>
> spin_lock_irq(&md->uuid_lock);
> @@ -3384,11 +3383,6 @@ static void device_to_statistics(struct device_statistics *s,
> spin_unlock_irq(&md->uuid_lock);
>
> s->dev_disk_flags = md->flags;
> - q = bdev_get_queue(device->ldev->backing_bdev);
> - s->dev_lower_blocked =
> - bdi_congested(q->backing_dev_info,
> - (1 << WB_async_congested) |
> - (1 << WB_sync_congested));
> put_ldev(device);
> }
> s->dev_size = drbd_get_capacity(device->this_bdev);
> --
> 2.28.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2020-09-17 9:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-10 14:48 bdi cleanups v4 Christoph Hellwig
2020-09-10 14:48 ` [PATCH 01/12] fs: remove the unused SB_I_MULTIROOT flag Christoph Hellwig
2020-09-17 9:41 ` Jan Kara
2020-09-10 14:48 ` [PATCH 02/12] drbd: remove dead code in device_to_statistics Christoph Hellwig
2020-09-17 9:46 ` Jan Kara [this message]
2020-09-10 14:48 ` [PATCH 03/12] drbd: remove RB_CONGESTED_REMOTE Christoph Hellwig
2020-09-17 9:55 ` Jan Kara
2020-09-19 6:58 ` Christoph Hellwig
2020-09-10 14:48 ` [PATCH 04/12] bdi: initialize ->ra_pages and ->io_pages in bdi_init Christoph Hellwig
2020-09-17 10:04 ` Jan Kara
2020-09-19 7:01 ` Christoph Hellwig
2020-09-10 14:48 ` [PATCH 05/12] md: update the optimal I/O size on reshape Christoph Hellwig
2020-09-12 6:17 ` Song Liu
2020-09-10 14:48 ` [PATCH 06/12] block: lift setting the readahead size into the block layer Christoph Hellwig
2020-09-17 10:35 ` Jan Kara
2020-09-19 7:31 ` Christoph Hellwig
2020-09-10 14:48 ` [PATCH 07/12] bdi: remove BDI_CAP_CGROUP_WRITEBACK Christoph Hellwig
2020-09-16 9:28 ` David Sterba
2020-09-17 9:36 ` Jan Kara
2020-09-10 14:48 ` [PATCH 08/12] bdi: remove BDI_CAP_SYNCHRONOUS_IO Christoph Hellwig
2020-09-17 9:36 ` Jan Kara
2020-09-10 14:48 ` [PATCH 09/12] mm: use SWP_SYNCHRONOUS_IO more intelligently Christoph Hellwig
2020-09-17 9:06 ` Jan Kara
2020-09-10 14:48 ` [PATCH 10/12] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag Christoph Hellwig
2020-09-17 9:25 ` Jan Kara
2020-09-19 6:51 ` Christoph Hellwig
2020-09-10 14:48 ` [PATCH 11/12] bdi: invert BDI_CAP_NO_ACCT_WB Christoph Hellwig
2020-09-17 9:27 ` Jan Kara
2020-09-10 14:48 ` [PATCH 12/12] bdi: replace BDI_CAP_NO_{WRITEBACK,ACCT_DIRTY} with a single flag Christoph Hellwig
2020-09-17 9:31 ` Jan Kara
2020-09-15 15:18 bdi cleanups v5 Christoph Hellwig
2020-09-15 15:18 ` [PATCH 02/12] drbd: remove dead code in device_to_statistics Christoph Hellwig
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