Re: [PATCH v5 2/3] scsi: core: Support disabling fair tag sharing

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On 11/14/23 23:24, Yu Kuai wrote:
在 2023/11/15 2:04, Bart Van Assche 写道:
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index d7f51b84f3c7..872f87001374 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -442,6 +442,7 @@ struct Scsi_Host *scsi_host_alloc(const struct scsi_host_template *sht, int priv
      shost->no_write_same = sht->no_write_same;
      shost->host_tagset = sht->host_tagset;
      shost->queuecommand_may_block = sht->queuecommand_may_block;
+    shost->disable_fair_tag_sharing = sht->disable_fair_tag_sharing;

Can we also consider to disable fair tag sharing by default for the
driver that total driver tags is less than a threshold?
I don't want to do this because such a change could disable fair tag
sharing for drivers that support both SSDs and hard disks being associated
with a single SCSI host.

Thanks,

Bart.




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