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| author | John Garry <john.garry@huawei.com> | 2022-10-18 13:16:03 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-10-22 05:02:52 +0200 |
| commit | 2acf97f199f9eba8321390325519e9b6bff60108 (patch) | |
| tree | a499918c381f5c049220d8bba92a22010915a704 /mm/mprotect.c | |
| parent | scsi: mvsas: Delete mvs_tag_init() (diff) | |
| download | linux-2acf97f199f9eba8321390325519e9b6bff60108.tar.xz linux-2acf97f199f9eba8321390325519e9b6bff60108.zip | |
scsi: mvsas: Use sas_task_find_rq() for tagging
The request associated with a SCSI command coming from the block layer has
a unique tag, so use that when possible for getting a slot.
Unfortunately we don't support reserved commands in the SCSI midlayer yet.
As such, SMP tasks - as an example - will not have a request associated, so
in the interim continue to manage those tags for that type of sas_task
internally.
We reserve an arbitrary 4 tags for these internal tags. Indeed, we already
decrement MVS_RSVD_SLOTS by 2 for the shost can_queue when flag
MVF_FLAG_SOC is set. This change was made in commit 20b09c2992fe ("[SCSI]
mvsas: add support for 94xx; layout change; bug fixes"), but what those 2
slots are used for is not obvious.
Also make the tag management functions static, where possible.
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1666091763-11023-8-git-send-email-john.garry@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'mm/mprotect.c')
0 files changed, 0 insertions, 0 deletions