scsi: hisi_sas: Sync complete queue for poll queue

Browse source

Currently we sync irq to avoid freeing task before using task in I/O
completion. After adding io_uring support, we need to do something similar
for poll queues.  As the process of CQ entries on poll queue are protected
by spinlock cq->lock, we can use spin_lock() + spin_unlock() on cq->lock to
make sure that CQ entries are processed to completion and then the complete
queue is synced.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1678169355-76215-4-git-send-email-chenxiang66@hisilicon.com
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Xiang Chen 2023-03-07 14:09:14 +08:00 • committed by Martin K. Petersen

parent 0e47effa77

commit b711ef5e17

3 changed files with 61 additions and 22 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/scsi/hisi_sas/hisi_sas.h

View file

77

drivers/scsi/hisi_sas/hisi_sas_main.c

View file

3

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c

View file