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libata: implement ATA_QCFLAG_RETRY

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Currently whether a command should be retried after failure is
determined inside ata_eh_finish().  Add ATA_QCFLAG_RETRY and move the
logic into ata_eh_autopsy().  This makes things clearer and helps
extending retry determination logic.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2008-03-27 19:14:24 +09:00 • committed by Jeff Garzik
parent a5987e0a1b
commit 03faab7827
2 changed files with 9 additions and 10 deletions
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include/linux/libata.h
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@ -224,6 +224,7 @@ enum {
ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */