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| author | Mike Christie <michael.christie@oracle.com> | 2023-04-07 22:05:38 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-04-12 03:55:35 +0200 |
| commit | 0af7b5e2362d3b67334f20e49138d89141dc24d3 (patch) | |
| tree | 0a95e36506583f2024262627154a34dca92d4ceb /drivers/scsi/scsi_common.c | |
| parent | scsi: Move sd_pr_type to scsi_common (diff) | |
| download | linux-0af7b5e2362d3b67334f20e49138d89141dc24d3.tar.xz linux-0af7b5e2362d3b67334f20e49138d89141dc24d3.zip | |
scsi: Add support for block PR read keys/reservation
This adds support in sd.c for the block PR read keys and read reservation
callouts, so upper layers like LIO can get the PR info that's been setup
using the existing pr callouts and return it to initiators.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20230407200551.12660-6-michael.christie@oracle.com
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>
Diffstat (limited to 'drivers/scsi/scsi_common.c')
| -rw-r--r-- | drivers/scsi/scsi_common.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_common.c b/drivers/scsi/scsi_common.c index 11bf6c275d4e..b7a7a2eea887 100644 --- a/drivers/scsi/scsi_common.c +++ b/drivers/scsi/scsi_common.c @@ -64,6 +64,27 @@ const char *scsi_device_type(unsigned type) } EXPORT_SYMBOL(scsi_device_type); +enum pr_type scsi_pr_type_to_block(enum scsi_pr_type type) +{ + switch (type) { + case SCSI_PR_WRITE_EXCLUSIVE: + return PR_WRITE_EXCLUSIVE; + case SCSI_PR_EXCLUSIVE_ACCESS: + return PR_EXCLUSIVE_ACCESS; + case SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY: + return PR_WRITE_EXCLUSIVE_REG_ONLY; + case SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY: + return PR_EXCLUSIVE_ACCESS_REG_ONLY; + case SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS: + return PR_WRITE_EXCLUSIVE_ALL_REGS; + case SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS: + return PR_EXCLUSIVE_ACCESS_ALL_REGS; + } + + return 0; +} +EXPORT_SYMBOL_GPL(scsi_pr_type_to_block); + enum scsi_pr_type block_pr_type_to_scsi(enum pr_type type) { switch (type) { |