From: Hannes Reinecke <hare@suse.de>
To: Stefan Hajnoczi <stefanha@redhat.com>, linux-block@vger.kernel.org
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
linux-kernel@vger.kernel.org,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Mike Christie <michael.christie@oracle.com>,
Jens Axboe <axboe@kernel.dk>,
linux-nvme@lists.infradead.org, Keith Busch <kbusch@kernel.org>,
Sagi Grimberg <sagi@grimberg.me>,
linux-scsi@vger.kernel.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 4/4] block: add IOC_PR_READ_RESERVATION ioctl
Date: Thu, 27 Nov 2025 08:07:53 +0100 [thread overview]
Message-ID: <1379c3f9-cdde-4733-b1e9-7e761628d0d3@suse.de> (raw)
In-Reply-To: <20251126163600.583036-5-stefanha@redhat.com>
On 11/26/25 17:36, Stefan Hajnoczi wrote:
> Add a Persistent Reservations ioctl to read the current reservation.
> This calls the pr_ops->read_reservation() function that was previously
> added in commit c787f1baa503 ("block: Add PR callouts for read keys and
> reservation") but was only used by the in-kernel SCSI target so far.
>
> The IOC_PR_READ_RESERVATION ioctl is necessary so that userspace
> applications that rely on Persistent Reservations ioctls have a way of
> inspecting the current state. Cluster managers and validation tests need
> this functionality.
>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> include/uapi/linux/pr.h | 7 +++++++
> block/ioctl.c | 28 ++++++++++++++++++++++++++++
> 2 files changed, 35 insertions(+)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich
prev parent reply other threads:[~2025-11-27 7:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-26 16:35 [PATCH 0/4] block: add IOC_PR_READ_KEYS and IOC_PR_READ_RESERVATION ioctls Stefan Hajnoczi
2025-11-26 16:35 ` [PATCH 1/4] scsi: sd: reject invalid pr_read_keys() num_keys values Stefan Hajnoczi
2025-11-27 6:59 ` Hannes Reinecke
2025-11-26 16:35 ` [PATCH 2/4] nvme: " Stefan Hajnoczi
2025-11-27 7:02 ` Hannes Reinecke
2025-11-26 16:35 ` [PATCH 3/4] block: add IOC_PR_READ_KEYS ioctl Stefan Hajnoczi
2025-11-26 18:06 ` kernel test robot
2025-11-27 7:07 ` Hannes Reinecke
2025-11-29 14:32 ` Krzysztof Kozlowski
2025-12-01 15:06 ` Stefan Hajnoczi
2025-12-01 16:26 ` Krzysztof Kozlowski
2025-12-01 18:36 ` Stefan Hajnoczi
2025-12-01 15:14 ` Stefan Hajnoczi
2025-12-01 16:27 ` Krzysztof Kozlowski
2025-11-29 14:31 ` Krzysztof Kozlowski
2025-11-26 16:36 ` [PATCH 4/4] block: add IOC_PR_READ_RESERVATION ioctl Stefan Hajnoczi
2025-11-27 7:07 ` Hannes Reinecke [this message]
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