scsi: only re-lock door after EH on devices that were reset
commit 48379270fe
upstream.
Setups that use the blk-mq I/O path can lock up if a host with a single
device that has its door locked enters EH. Make sure to only send the
command to re-lock the door to devices that actually were reset and thus
might have lost their state. Otherwise the EH code might be get blocked
on blk_get_request as all requests for non-reset devices might be in use.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Meelis Roos <meelis.roos@ut.ee>
Tested-by: Meelis Roos <meelis.roos@ut.ee>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1984,8 +1984,10 @@ static void scsi_restart_operations(struct Scsi_Host *shost)
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* is no point trying to lock the door of an off-line device.
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*/
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shost_for_each_device(sdev, shost) {
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if (scsi_device_online(sdev) && sdev->locked)
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if (scsi_device_online(sdev) && sdev->was_reset && sdev->locked) {
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scsi_eh_lock_door(sdev);
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sdev->was_reset = 0;
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}
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}
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/*
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