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authorMartin K. Petersen <martin.petersen@oracle.com>2023-05-31 11:45:16 -0400
committerMartin K. Petersen <martin.petersen@oracle.com>2023-05-31 11:45:16 -0400
commit2ef23e4b537be3b417080bdade7ef48cf9f95266 (patch)
treede29a318b6a70b3c0a98801b15f33107d2e05bdd /include/scsi
parent0e5e41ee3d73823d65b33463d557b8b6833b457d (diff)
parent078f4f4b34d6c2dadabb363d3fc6c84b32927dea (diff)
Merge patch series "ufs: Do not requeue while ungating the clock"
Bart Van Assche <bvanassche@acm.org> says: In the traces we recorded while testing zoned storage we noticed that UFS commands are requeued while the clock is being ungated. Command requeueing makes it harder than necessary to preserve the command order. Hence this patch series that modifies the SCSI core and also the UFS driver such that clock ungating does not trigger command requeueing. Link: https://lore.kernel.org/r/20230529202640.11883-1-bvanassche@acm.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_host.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 0f29799efa02..70b7475dcf56 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -458,6 +458,9 @@ struct scsi_host_template {
/* True if the host uses host-wide tagspace */
unsigned host_tagset:1;
+ /* The queuecommand callback may block. See also BLK_MQ_F_BLOCKING. */
+ unsigned queuecommand_may_block:1;
+
/*
* Countdown for host blocking with no commands outstanding.
*/
@@ -653,6 +656,9 @@ struct Scsi_Host {
/* True if the host uses host-wide tagspace */
unsigned host_tagset:1;
+ /* The queuecommand callback may block. See also BLK_MQ_F_BLOCKING. */
+ unsigned queuecommand_may_block:1;
+
/* Host responded with short (<36 bytes) INQUIRY result */
unsigned short_inquiry:1;