From: John Garry <john.g.garry@oracle.com>
To: Bart Van Assche <bvanassche@acm.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org,
Sebastian Reichel <sebastian.reichel@collabora.com>,
Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@kernel.dk>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Subject: Re: [PATCH] scsi: core: Fix a regression triggered by scsi_host_busy()
Date: Wed, 8 Oct 2025 08:03:22 +0100 [thread overview]
Message-ID: <3cea82dd-197c-4aa7-9a9c-8908d2f41db8@oracle.com> (raw)
In-Reply-To: <20251007214800.1678255-1-bvanassche@acm.org>
On 07/10/2025 22:48, Bart Van Assche wrote:
> Commit 995412e23bb2 ("blk-mq: Replace tags->lock with SRCU for tag
> iterators") introduced the following regression:
>
> Call trace:
> __srcu_read_lock+0x30/0x80 (P)
> blk_mq_tagset_busy_iter+0x44/0x300
> scsi_host_busy+0x38/0x70
this value is readable from sysfs, so why even print it?
> ufshcd_print_host_state+0x34/0x1bc
> ufshcd_link_startup.constprop.0+0xe4/0x2e0
next prev parent reply other threads:[~2025-10-08 7:03 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-07 21:48 [PATCH] scsi: core: Fix a regression triggered by scsi_host_busy() Bart Van Assche
2025-10-08 3:17 ` Ming Lei
2025-10-08 5:50 ` Christoph Hellwig
2025-10-08 12:49 ` Sebastian Reichel
2025-10-08 15:48 ` Bart Van Assche
2025-10-08 15:42 ` Bart Van Assche
2025-10-08 7:03 ` John Garry [this message]
2025-10-08 17:53 ` Bart Van Assche
2025-10-08 12:33 ` Sebastian Reichel
2025-10-22 2:26 ` Martin K. Petersen
2025-10-22 8:13 ` John Garry
2025-10-22 18:07 ` Bart Van Assche
2025-10-23 8:31 ` John Garry
2025-10-23 16:32 ` Bart Van Assche
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