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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2023-05-31 17:45:16 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-05-31 17:45:16 +0200 |
| commit | 2ef23e4b537be3b417080bdade7ef48cf9f95266 (patch) | |
| tree | de29a318b6a70b3c0a98801b15f33107d2e05bdd /include/scsi | |
| parent | scsi: virtio_scsi: Remove a useless function call (diff) | |
| parent | scsi: ufs: Ungate the clock synchronously (diff) | |
| download | linux-2ef23e4b537be3b417080bdade7ef48cf9f95266.tar.xz linux-2ef23e4b537be3b417080bdade7ef48cf9f95266.zip | |
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.h | 6 |
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; |