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block: Rename BLK_STS_NEXUS to BLK_STS_RESV_CONFLICT 

BLK_STS_NEXUS is used for NVMe/SCSI reservation conflicts and DASD's
locking feature which works similar to NVMe/SCSI reservations where a
host can get a lock on a device and when the lock is taken it will get
failures.

This patch renames BLK_STS_NEXUS so it better reflects this type of
use.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20230407200551.12660-3-michael.christie@oracle.com
Acked-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2023-04-07 15:05:35 -05:00 committed by Martin K. Petersen
parent c787f1baa5
commit 7ba150834b
5 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
block/blk-core.c
View File

@ -155,7 +155,7 @@ static const struct {
[BLK_STS_NOSPC] = { -ENOSPC, "critical space allocation" },
[BLK_STS_TRANSPORT] = { -ENOLINK, "recoverable transport" },
[BLK_STS_TARGET] = { -EREMOTEIO, "critical target" },
[BLK_STS_NEXUS] = { -EBADE, "critical nexus" },
[BLK_STS_RESV_CONFLICT] = { -EBADE, "reservation conflict" },
[BLK_STS_MEDIUM] = { -ENODATA, "critical medium" },
[BLK_STS_PROTECTION] = { -EILSEQ, "protection" },
[BLK_STS_RESOURCE] = { -ENOMEM, "kernel resource" },

2
drivers/nvme/host/core.c
View File

@ -279,7 +279,7 @@ static blk_status_t nvme_error_status(u16 status)
case NVME_SC_INVALID_PI:
return BLK_STS_PROTECTION;
case NVME_SC_RESERVATION_CONFLICT:
return BLK_STS_NEXUS;
return BLK_STS_RESV_CONFLICT;
case NVME_SC_HOST_PATH_ERROR:
return BLK_STS_TRANSPORT;
case NVME_SC_ZONE_TOO_MANY_ACTIVE:

7
drivers/s390/block/dasd.c
View File

@ -2723,7 +2723,12 @@ static void __dasd_cleanup_cqr(struct dasd_ccw_req *cqr)
else if (status == 0) {
switch (cqr->intrc) {
case -EPERM:
error = BLK_STS_NEXUS;
/*
* DASD doesn't implement SCSI/NVMe reservations, but it
* implements a locking scheme similar to them. We
* return this error when we no longer have the lock.
*/
error = BLK_STS_RESV_CONFLICT;
break;
case -ENOLINK:
error = BLK_STS_TRANSPORT;

2
drivers/scsi/scsi_lib.c
View File

@ -599,7 +599,7 @@ static blk_status_t scsi_result_to_blk_status(int result)
case SCSIML_STAT_OK:
break;
case SCSIML_STAT_RESV_CONFLICT:
return BLK_STS_NEXUS;
return BLK_STS_RESV_CONFLICT;
case SCSIML_STAT_NOSPC:
return BLK_STS_NOSPC;
case SCSIML_STAT_MED_ERROR:

4
include/linux/blk_types.h
View File

@ -96,7 +96,7 @@ typedef u16 blk_short_t;
#define BLK_STS_NOSPC ((__force blk_status_t)3)
#define BLK_STS_TRANSPORT ((__force blk_status_t)4)
#define BLK_STS_TARGET ((__force blk_status_t)5)
#define BLK_STS_NEXUS ((__force blk_status_t)6)
#define BLK_STS_RESV_CONFLICT ((__force blk_status_t)6)
#define BLK_STS_MEDIUM ((__force blk_status_t)7)
#define BLK_STS_PROTECTION ((__force blk_status_t)8)
#define BLK_STS_RESOURCE ((__force blk_status_t)9)
@ -184,7 +184,7 @@ static inline bool blk_path_error(blk_status_t error)
case BLK_STS_NOTSUPP:
case BLK_STS_NOSPC:
case BLK_STS_TARGET:
case BLK_STS_NEXUS:
case BLK_STS_RESV_CONFLICT:
case BLK_STS_MEDIUM:
case BLK_STS_PROTECTION:
return false;