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Increase device CCB queue array size by CAM_RL_VALUES - 1 (4) elements.
It is required to store extra recovery requests in case of bus resets. On ATA/SATA this fixes assertion panics on HEAD with INVARIANTS enabled or possible memory corruptions otherwise if timeout/reset happens when device CCB queue is already full. Reported by: gibbs@ MFC after: 1 week
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parent
1dcbb99523
commit
8cc6481cd5
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=241444
@ -314,7 +314,8 @@ cam_ccbq_resize(struct cam_ccbq *ccbq, int new_size)
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* same size once the outstanding entries have been processed.
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*/
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if (space_left < 0
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|| camq_resize(&ccbq->queue, new_size) == CAM_REQ_CMP) {
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|| camq_resize(&ccbq->queue, new_size + (CAM_RL_VALUES - 1)) ==
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CAM_REQ_CMP) {
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ccbq->devq_openings += delta;
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ccbq->dev_openings += delta;
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return (CAM_REQ_CMP);
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@ -327,7 +328,7 @@ int
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cam_ccbq_init(struct cam_ccbq *ccbq, int openings)
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{
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bzero(ccbq, sizeof(*ccbq));
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if (camq_init(&ccbq->queue, openings) != 0) {
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if (camq_init(&ccbq->queue, openings + (CAM_RL_VALUES - 1)) != 0) {
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return (1);
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}
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ccbq->devq_openings = openings;
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