linux-toradex.git/drivers/scsi/sd_dif.c, branch v3.17-rc2

bio-integrity: Convert to bvec_iter

2013-11-24T06:33:50+00:00

The bio integrity is also stored in a bvec array, so if we use the bvec
iter code we just added, the integrity code won't need to implement its
own iteration stuff (bio_integrity_mark_head(), bio_integrity_mark_tail())

Signed-off-by: Kent Overstreet 
Cc: Jens Axboe 
Cc: "Martin K. Petersen" 
Cc: "James E.J. Bottomley"

[SCSI] sd_dif: problem with verify of type 1 protection information (PI)

2013-05-02T22:37:03+00:00

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 
Acked-by: Martin K. Petersen 
Signed-off-by: James Bottomley

[SCSI] sd: Avoid remapping bad reference tags

2012-09-24T08:10:59+00:00

It does not make sense to translate ref tags with unexpected values.
Instead we simply ignore them and let the upper layers catch the
problem. Ref tags that contain the expected value are still remapped.

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley

scsi: remove the second argument of k[un]map_atomic()

2012-03-20T13:48:19+00:00

Signed-off-by: Cong Wang

floppy/scsi: fix setting of BIO flags

2012-03-05T23:49:43+00:00

Fix setting bio flags in drivers (sd_dif/floppy).

Signed-off-by: Muthukumar R 
Cc: Jens Axboe 
Cc: James Bottomley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

block: Make the integrity mapped property a bio flag

2010-10-15T13:49:20+00:00

Previously we tracked whether the integrity metadata had been remapped
using a request flag. This was fine for low-level retries. However, if
an I/O was redriven by upper layers we would end up remapping again,
causing the retry to fail.

Deprecate the REQ_INTEGRITY flag and introduce BIO_MAPPED_INTEGRITY
which enables filesystems to notify lower layers that the bio in
question has already been remapped.

Signed-off-by: Martin K. Petersen 
Signed-off-by: Jens Axboe

[SCSI] sd: Return correct error code for DIF

2009-11-26T14:54:46+00:00

sd_dif.c was not updated to return -EILSEQ, leading to error handling
failures in applications which provide their own integrity metadata (as
opposed to being protected by the block layer functions).

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley

[SCSI] sd: Detach DIF from block integrity infrastructure

2009-10-02T14:46:39+00:00

So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is
enabled.  However, communication between initiator and target should be
independent of protection information DMA.  There are DIF-only host
adapters coming out that will be able to take advantage of this.

Move the relevant DIF bits to sd.c.

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley

[SCSI] Deprecate SCSI_PROT_*_CONVERT operations

2009-10-02T14:46:25+00:00

The checksum format is orthogonal to whether the protection information
is being passed on beyond the HBA or not.  It is perfectly valid to use
a non-T10 CRC with WRITE_STRIP and READ_INSERT.

Consequently it no longer makes sense to explicitly refer to the
conversion in the protection operation.  Update sd_dif and lpfc
accordingly.

Signed-off-by: Martin K. Petersen 
Acked-by: Ihab Hamadi 
Signed-off-by: James Bottomley

block: convert to pos and nr_sectors accessors

2009-05-11T07:50:54+00:00

With recent cleanups, there is no place where low level driver
directly manipulates request fields.  This means that the 'hard'
request fields always equal the !hard fields.  Convert all
rq->sectors, nr_sectors and current_nr_sectors references to
accessors.

While at it, drop superflous blk_rq_pos() < 0 test in swim.c.

[ Impact: use pos and nr_sectors accessors ]

Signed-off-by: Tejun Heo 
Acked-by: Geert Uytterhoeven 
Tested-by: Grant Likely 
Acked-by: Grant Likely 
Tested-by: Adrian McMenamin 
Acked-by: Adrian McMenamin 
Acked-by: Mike Miller 
Cc: James Bottomley 
Cc: Bartlomiej Zolnierkiewicz 
Cc: Borislav Petkov 
Cc: Sergei Shtylyov 
Cc: Eric Moore 
Cc: Alan Stern 
Cc: FUJITA Tomonori 
Cc: Pete Zaitcev 
Cc: Stephen Rothwell 
Cc: Paul Clements 
Cc: Tim Waugh 
Cc: Jeff Garzik 
Cc: Jeremy Fitzhardinge 
Cc: Alex Dubov 
Cc: David Woodhouse 
Cc: Martin Schwidefsky 
Cc: Dario Ballabio 
Cc: David S. Miller 
Cc: Rusty Russell 
Cc: unsik Kim 
Cc: Laurent Vivier 
Signed-off-by: Jens Axboe