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| author | Damien Le Moal <damien.lemoal@wdc.com> | 2018-05-09 09:28:12 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2018-05-10 11:43:20 -0700 |
| commit | 804689ad2d9b66d0d3920b48cf05881049d44589 (patch) | |
| tree | d1b6c0151509a56f14a762438d3334412a47c154 /drivers/ata | |
| parent | 7eb49509dd6b2a4ed0c18a0f8c187afbacf98b42 (diff) | |
| download | linux-804689ad2d9b66d0d3920b48cf05881049d44589.tar.gz linux-804689ad2d9b66d0d3920b48cf05881049d44589.tar.bz2 linux-804689ad2d9b66d0d3920b48cf05881049d44589.zip | |
libata: Fix command retry decision
For failed commands with valid sense data (e.g. NCQ commands),
scsi_check_sense() is used in ata_analyze_tf() to determine if the
command can be retried. In such case, rely on this decision and ignore
the command error mask based decision done in ata_worth_retry().
This fixes useless retries of commands such as unaligned writes on zoned
disks (TYPE_ZAC).
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-eh.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index b933357edc22..1035de1e5120 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2237,12 +2237,16 @@ static void ata_eh_link_autopsy(struct ata_link *link) if (qc->err_mask & ~AC_ERR_OTHER) qc->err_mask &= ~AC_ERR_OTHER; - /* SENSE_VALID trumps dev/unknown error and revalidation */ + /* + * SENSE_VALID trumps dev/unknown error and revalidation. Upper + * layers will determine whether the command is worth retrying + * based on the sense data and device class/type. Otherwise, + * determine directly if the command is worth retrying using its + * error mask and flags. + */ if (qc->flags & ATA_QCFLAG_SENSE_VALID) qc->err_mask &= ~(AC_ERR_DEV | AC_ERR_OTHER); - - /* determine whether the command is worth retrying */ - if (ata_eh_worth_retry(qc)) + else if (ata_eh_worth_retry(qc)) qc->flags |= ATA_QCFLAG_RETRY; /* accumulate error info */ |