>>>>> "James" == James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> writes: James> When SCSI was written, all commands coming from the filesystem James> (REQ_TYPE_FS commands) had data. This meant that our signal for James> needing to complete the command was the number of bytes completed James> being equal to the number of bytes in the request. James> Unfortunately, with the advent of flush barriers, we can now get James> zero length REQ_TYPE_FS commands, which confuse this logic James> because they satisfy the condition every time. This means they James> never get retried even for retryable conditions, like UNIT James> ATTENTION because we complete them early assuming they're done. James> Fix this by special casing the early completion condition to James> recognise zero length commands with errors and let them drop James> through to the retry code. Applied to 4.7/scsi-fixes. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
