scsi: iscsi: Prefer xmit of DataOut over new commands

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iscsi_data_xmit() (TX worker) is iterating over the queue of new SCSI
commands concurrently with the queue being replenished. Only after the
queue is emptied will we start sending pending DataOut PDUs. That leads to
DataOut timeout on the target side and to connection reinstatement.

Give priority to pending DataOut commands over new commands.

Link: https://lore.kernel.org/r/20220607131953.11584-1-d.bogdanov@yadro.com
Reviewed-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Dmitry Bogdanov 2022-06-07 16:19:53 +03:00 • committed by Martin K. Petersen

parent c0d93b12f3

commit 65080c51fd

1 changed files with 24 additions and 20 deletions

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drivers/scsi/libiscsi.c

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