kernel/drivers/nvme/host/pr.c, branch linux-6.9.y

nvme: fix nvme_pr_* status code parsing

2024-06-21T12:40:17Z

[ Upstream commit b1a1fdd7096dd2d67911b07f8118ff113d815db4 ] Fix the parsing if extra status bits (e.g. MORE) is present. Fixes: 7fb42780d06c ("nvme: Convert NVMe errors to PR errors") Signed-off-by: Weiwen Hu Signed-off-by: Keith Busch Signed-off-by: Sasha Levin

nvme: use nvme_disk_is_ns_head helper

2024-03-14T18:34:55Z

Use nvme_disk_is_ns_head helper instead of check fops directly, and also drop CONFIG_NVME_MULTIPATH check. Signed-off-by: Guixin Liu Reviewed-by: Chaitanya Kulkarni Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Keith Busch

nvme: introduce nvme_disk_is_ns_head helper

2024-01-05T21:15:41Z

We currently rely on gendisk's file operations (fops) to distinguish between a namespace head (ns_head) and a regular namespace. To enhance code readability, introduce a helper function. Additionally, we must ensure that the device is not an ns_head before calling nvme_get_ns_from_dev(). To enforce this, add a WARN_ON check within the nvme_get_ns_from_dev(). Signed-off-by: Guixin Liu Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Reviewed-by: Liu Song [include fix: https://lore.kernel.org/oe-kbuild-all/202401031943.0N72Tkji-lkp@intel.com/] Signed-off-by: Keith Busch

nvme: Add pr_ops read_reservation support

2023-04-12T01:55:36Z

This patch adds support for the pr_ops read_reservation callout by calling the NVMe Reservation Report helper. It then parses that info to detect if there is a reservation and if there is then convert the returned info to a pr_ops pr_held_reservation struct. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-14-michael.christie@oracle.com Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen

nvme: Add a nvme_pr_type enum

2023-04-12T01:55:36Z

The next patch adds support to report the reservation type, so we need to be able to convert from the NVMe PR value we get from the device to the linux block layer PR value that will be returned to callers. To prepare for that, this patch adds a nvme_pr_type enum and renames the nvme_pr_type function. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-13-michael.christie@oracle.com Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

nvme: Add pr_ops read_keys support

2023-04-12T01:55:35Z

This patch adds support for the pr_ops read_keys callout by calling the NVMe Reservation Report helper, then parsing that info to get the controller's registered keys. Because the callout is only used in the kernel where the callers, like LIO, do not know about controller/host IDs, the callout just returns the registered keys which is required by the SCSI PR in READ KEYS command. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-12-michael.christie@oracle.com Reviewed-by: Chaitanya Kulkarni Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

nvme: Add helper to send pr command

2023-04-12T01:55:35Z

Move the code that checks for multipath support and sends the pr command to a new helper so it can be used by the reservation report support added in the next patches. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-11-michael.christie@oracle.com Reviewed-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

nvme: Move pr code to it's own file

2023-04-12T01:55:35Z

This patch moves the pr code to it's own file because I'm going to be adding more functions and core.c is getting bigger. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-10-michael.christie@oracle.com Reviewed-by: Chaitanya Kulkarni Reviewed-by: Keith Busch Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen