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Douglas Gilbert 5e315f31fa scsi: core: Make SCSI Status CONDITION MET equivalent to GOOD 
[ Upstream commit 1875ede02e ]

The SCSI PRE-FETCH (10 or 16) command is present both on hard disks
and some SSDs. It is useful when the address of the next block(s) to
be read is known but it is not following the LBA of the current READ
(so read-ahead won't help). It returns two "good" SCSI Status values.
If the requested blocks have fitted (or will most likely fit (when
the IMMED bit is set)) into the disk's cache, it returns CONDITION
MET. If it didn't (or will not) fit then it returns GOOD status.

The goal of this patch is to stop the SCSI subsystem treating the
CONDITION MET SCSI status as an error. The current state makes the
PRE-FETCH command effectively unusable via pass-throughs.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-05-25 16:17:50 +02:00
..
fc uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
fc_encode.h [SCSI] libfc: Add support for FDMI 2012-02-19 08:08:58 -06:00
fc_frame.h
…
fcoe_sysfs.h libfcoe, fcoe, bnx2fc: Add new fcoe control interface 2012-12-14 10:38:54 -08:00
iscsi_if.h scsi_transport_iscsi: Add 25G and 40G speed definition 2016-02-23 21:27:02 -05:00
iscsi_proto.h linux: drop __bitwise__ everywhere 2016-12-16 00:13:41 +02:00
iser.h IB/iser,isert: Create and use new shared header 2015-12-24 00:17:35 -05:00
libfc.h scsi: libfc: convert fc_fcp_pkt.ref_cnt from atomic_t to refcount_t 2017-03-15 18:44:02 -04:00
libfcoe.h fcoe: implement FIP VLAN responder 2016-07-20 19:49:41 -04:00
libiscsi.h SCSI misc on 20170503 2017-05-04 12:19:44 -07:00
libiscsi_tcp.h iscsi_tcp: Use ahash 2016-01-27 20:36:10 +08:00
libsas.h scsi: libsas: align sata_device's rps_resp on a cacheline 2017-12-14 09:52:51 +01:00
osd_attributes.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
osd_initiator.h block: introduce new block status code type 2017-06-09 09:27:32 -06:00
osd_ore.h Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
osd_protocol.h Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
osd_sec.h Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
osd_sense.h Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
osd_types.h Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
sas.h scsi: Centralise ssp frame information units 2015-11-25 22:12:50 -05:00
sas_ata.h [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type 2013-05-10 07:47:52 -07:00
scsi.h scsi: core: Make SCSI Status CONDITION MET equivalent to GOOD 2018-05-25 16:17:50 +02:00
scsi_bsg_iscsi.h
…
scsi_cmnd.h scsi: core: Avoid that ATA error handling can trigger a kernel hang or oops 2018-03-15 10:54:29 +01:00
scsi_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_dbg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_device.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_devinfo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_dh.h scsi_dh: add 'rescan' callback 2016-02-23 21:27:02 -05:00
scsi_driver.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_eh.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_host.h scsi: core: Avoid that ATA error handling can trigger a kernel hang or oops 2018-03-15 10:54:29 +01:00
scsi_ioctl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_proto.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_request.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_tcq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_transport.h SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
scsi_transport_fc.h scsi: fc: start decoupling fc_block_scsi_eh from scsi_cmnd 2017-08-07 14:04:02 -04:00
scsi_transport_iscsi.h scsi: libiscsi: Remove iscsi_destroy_session 2017-10-02 22:23:21 -04:00
scsi_transport_sas.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsi_transport_spi.h scsi: remove abuses of scsi_populate_tag 2014-11-12 11:19:41 +01:00
scsi_transport_srp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scsicam.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
srp.h IB/srp: Add 64-bit LUN support 2015-05-18 13:35:56 -04:00
viosrp.h ibmvscsis: Initial commit of IBM VSCSI Tgt Driver 2016-07-20 01:15:43 -07:00