diff options
| author | Jeremy Higdon <jeremy@sgi.com> | 2013-04-18 02:55:23 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-05-02 15:37:03 -0700 |
| commit | 025a1f5029497c12a800a10d4540bf2313413b59 (patch) | |
| tree | 77a8b733ea5f7d2e9b75aaf3a6a273be18ba4253 /drivers/scsi/sd_dif.c | |
| parent | 1ac7c26d88bc0e256ecd269e6f90c7343c359004 (diff) | |
| download | lwn-025a1f5029497c12a800a10d4540bf2313413b59.tar.gz lwn-025a1f5029497c12a800a10d4540bf2313413b59.zip | |
[SCSI] sd_dif: problem with verify of type 1 protection information (PI)
It appears to me that there is a problem with handling of type 1 protection
information.
It is considering a logical block reference tag of 0xffffffff to be an error,
but it is actually valid any time ((lba & 0xffffffff) == 0xffffffff) [for
example, 2TiB-1, 4TiB-1, 6TiB-1, etc.].
I'm going by what's written in 4.18.3 of SBC3, where there doesn't appear
to be any invalid value for the reference tag.
Signed-off-by: Jeremy Higdon <jeremy@sgi.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/sd_dif.c')
| -rw-r--r-- | drivers/scsi/sd_dif.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c index 04998f36e507..6174ca4ea275 100644 --- a/drivers/scsi/sd_dif.c +++ b/drivers/scsi/sd_dif.c @@ -93,14 +93,6 @@ static int sd_dif_type1_verify(struct blk_integrity_exchg *bix, csum_fn *fn) if (sdt->app_tag == 0xffff) return 0; - /* Bad ref tag received from disk */ - if (sdt->ref_tag == 0xffffffff) { - printk(KERN_ERR - "%s: bad phys ref tag on sector %lu\n", - bix->disk_name, (unsigned long)sector); - return -EIO; - } - if (be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { printk(KERN_ERR "%s: ref tag error on sector %lu (rcvd %u)\n", |