scsi: core: Limit retries of commands that receive UNIT ATTENTION

Fail non-removable commands in scsi_io_completion_action() on UNIT
ATTENTION if retries exceed max(cmd->allowed, 3). This bounds the number
of retries of commands for which scsi_decide_disposition() exhausted the
retries or that have been finished by the error handler, e.g. because a
target keeps reporting UNIT ATTENTION after recovery.  Since
scmd->retries is not incremented for failfast commands on this code
path, failfast commands are retried until the command runtime limit is
exceeded, as before.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Alexey Charkov <alchark@flipper.net>
Link: https://patch.msgid.link/959f1c7628af83cd184ac51f35e38d654b261069.1793400000.git.bvanassche@acm.org
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions