From: Mike Christie <michael.christie@oracle.com>
To: bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com,
linux-scsi@vger.kernel.org,
james.bottomley@hansenpartnership.com,
linux-block@vger.kernel.org, dm-devel@redhat.com,
snitzer@kernel.org, axboe@kernel.dk,
linux-nvme@lists.infradead.org, chaitanyak@nvidia.com,
kbusch@kernel.org, target-devel@vger.kernel.org
Cc: Mike Christie <michael.christie@oracle.com>
Subject: [PATCH v4 06/18] dm: Add support for block PR read keys/reservation
Date: Fri, 24 Feb 2023 11:44:50 -0600 [thread overview]
Message-ID: <20230224174502.321490-7-michael.christie@oracle.com> (raw)
In-Reply-To: <20230224174502.321490-1-michael.christie@oracle.com>
This adds support in dm for the block PR read keys and read reservation
callouts.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
drivers/md/dm.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index eace45a18d45..4abf640f1e7e 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -3346,12 +3346,55 @@ static int dm_pr_clear(struct block_device *bdev, u64 key)
return r;
}
+static int dm_pr_read_keys(struct block_device *bdev, struct pr_keys *keys)
+{
+ struct mapped_device *md = bdev->bd_disk->private_data;
+ const struct pr_ops *ops;
+ int r, srcu_idx;
+
+ r = dm_prepare_ioctl(md, &srcu_idx, &bdev);
+ if (r < 0)
+ goto out;
+
+ ops = bdev->bd_disk->fops->pr_ops;
+ if (ops && ops->pr_read_keys)
+ r = ops->pr_read_keys(bdev, keys);
+ else
+ r = -EOPNOTSUPP;
+out:
+ dm_unprepare_ioctl(md, srcu_idx);
+ return r;
+}
+
+static int dm_pr_read_reservation(struct block_device *bdev,
+ struct pr_held_reservation *rsv)
+{
+ struct mapped_device *md = bdev->bd_disk->private_data;
+ const struct pr_ops *ops;
+ int r, srcu_idx;
+
+ r = dm_prepare_ioctl(md, &srcu_idx, &bdev);
+ if (r < 0)
+ goto out;
+
+ ops = bdev->bd_disk->fops->pr_ops;
+ if (ops && ops->pr_read_reservation)
+ r = ops->pr_read_reservation(bdev, rsv);
+ else
+ r = -EOPNOTSUPP;
+out:
+ dm_unprepare_ioctl(md, srcu_idx);
+ return r;
+}
+
static const struct pr_ops dm_pr_ops = {
.pr_register = dm_pr_register,
.pr_reserve = dm_pr_reserve,
.pr_release = dm_pr_release,
.pr_preempt = dm_pr_preempt,
.pr_clear = dm_pr_clear,
+ .pr_read_keys = dm_pr_read_keys,
+ .pr_read_reservation = dm_pr_read_reservation,
};
static const struct block_device_operations dm_blk_dops = {
--
2.25.1
next prev parent reply other threads:[~2023-02-24 17:45 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-24 17:44 [PATCH v4 01/18] Use block pr_ops in LIO Mike Christie
2023-02-24 17:44 ` [PATCH v4 01/18] block: Add PR callouts for read keys and reservation Mike Christie
2023-03-06 5:03 ` Chaitanya Kulkarni
2023-03-14 17:10 ` Christoph Hellwig
2023-02-24 17:44 ` [PATCH v4 02/18] block: Rename BLK_STS_NEXUS to BLK_STS_RESV_CONFLICT Mike Christie
2023-03-14 17:11 ` Christoph Hellwig
2023-03-15 10:04 ` Stefan Haberland
2023-03-15 13:30 ` Christoph Hellwig
2023-03-16 10:17 ` Stefan Haberland
2023-03-16 16:36 ` Mike Christie
2023-03-20 13:06 ` Christoph Hellwig
2023-03-20 16:39 ` Mike Christie
2023-02-24 17:44 ` [PATCH v4 03/18] scsi: Rename sd_pr_command Mike Christie
2023-02-24 17:44 ` [PATCH v4 04/18] scsi: Move sd_pr_type to header to share Mike Christie
2023-03-06 5:06 ` Chaitanya Kulkarni
2023-02-24 17:44 ` [PATCH v4 05/18] scsi: Add support for block PR read keys/reservation Mike Christie
2023-03-06 5:08 ` Chaitanya Kulkarni
2023-03-14 17:11 ` Christoph Hellwig
2023-02-24 17:44 ` Mike Christie [this message]
2023-02-24 17:44 ` [PATCH v4 07/18] nvme: Fix reservation status related structs Mike Christie
2023-03-05 21:26 ` Chaitanya Kulkarni
2023-03-14 17:12 ` Christoph Hellwig
2023-03-14 17:15 ` Christoph Hellwig
2023-03-14 22:23 ` Mike Christie
2023-03-15 5:40 ` Christoph Hellwig
2023-03-20 17:08 ` Mike Christie
2023-02-24 17:44 ` [PATCH v4 08/18] nvme: Don't hardcode the data len for pr commands Mike Christie
2023-02-24 17:44 ` [PATCH v4 09/18] nvme: Move pr code to it's own file Mike Christie
2023-03-14 17:13 ` Christoph Hellwig
2023-03-14 17:30 ` Keith Busch
2023-02-24 17:44 ` [PATCH v4 10/18] nvme: Add helper to send pr command Mike Christie
2023-03-05 21:28 ` Chaitanya Kulkarni
2023-03-06 17:25 ` Mike Christie
2023-03-14 17:13 ` Christoph Hellwig
2023-02-24 17:44 ` [PATCH v4 11/18] nvme: Add pr_ops read_keys support Mike Christie
2023-03-14 17:16 ` Christoph Hellwig
2023-02-24 17:44 ` [PATCH v4 12/18] nvme: Add a nvme_pr_type enum Mike Christie
2023-03-05 21:30 ` Chaitanya Kulkarni
2023-03-14 17:17 ` Christoph Hellwig
2023-02-24 17:44 ` [PATCH v4 13/18] nvme: Add pr_ops read_reservation support Mike Christie
2023-02-24 21:04 ` kernel test robot
2023-03-06 17:25 ` Mike Christie
2023-03-05 21:32 ` Chaitanya Kulkarni
2023-03-14 17:21 ` Christoph Hellwig
2023-02-24 17:44 ` [PATCH v4 14/18] scsi: target: Rename sbc_ops to exec_cmd_ops Mike Christie
2023-02-24 17:44 ` [PATCH v4 15/18] scsi: target: Allow backends to hook into PR handling Mike Christie
2023-02-24 17:45 ` [PATCH v4 16/18] scsi: target: Pass struct target_opcode_descriptor to enabled Mike Christie
2023-02-24 17:45 ` [PATCH v4 17/18] scsi: target: Report and detect unsupported PR commands Mike Christie
2023-02-24 17:45 ` [PATCH v4 18/18] scsi: target: Add block PR support to iblock Mike Christie
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