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70e42fd02c
linux/include/scsi
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Damien Le Moal 70e42fd02c scsi: sd_zbc: Write unlock zone from sd_uninit_cmnd() 
Releasing a zone write lock only when the write commnand that acquired
the lock completes can cause deadlocks due to potential command
reordering if the lock owning request is requeued and not executed. This
problem exists only with the scsi-mq path as, unlike the legacy path,
requests are moved out of the dispatch queue before being prepared and
so before locking a zone for a write command.

Since sd_uninit_cmnd() is now always called when a request is requeued,
call sd_zbc_write_unlock_zone() from that function for write requests
that acquired a zone lock instead of from sd_done(). Acquisition of a zone
lock by a write command is indicated using the new command
flag SCMD_ZONE_WRITE_LOCK.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-16 20:01:31 -04:00
..
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 [SCSI] fcoe: remove unused ptype field in fcoe_rcv_info 2011-07-28 12:08:55 +04:00
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_tcp.h iscsi_tcp: Use ahash 2016-01-27 20:36:10 +08:00
libiscsi.h SCSI misc on 20170503 2017-05-04 12:19:44 -07:00
libsas.h scsi: sas: scsi_queue_work can fail, so make callers aware 2017-06-27 21:28:04 -04:00
osd_attributes.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +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_ata.h [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type 2013-05-10 07:47:52 -07:00
sas.h scsi: Centralise ssp frame information units 2015-11-25 22:12:50 -05:00
scsi_bsg_iscsi.h [SCSI] iscsi class: add bsg support to iscsi class 2011-08-27 08:36:21 -06:00
scsi_cmnd.h scsi: sd_zbc: Write unlock zone from sd_uninit_cmnd() 2017-08-16 20:01:31 -04:00
scsi_common.h scsi: add scsi_set_sense_field_pointer() 2016-04-04 12:07:42 -04:00
scsi_dbg.h scsi: remove scsi_show_sense_hdr() 2015-12-02 16:36:14 -05:00
scsi_device.h SCSI misc on 20170704 2017-07-06 12:10:33 -07:00
scsi_devinfo.h scsi: remove various unused blist flags 2017-06-26 12:44:27 -04:00
scsi_dh.h scsi_dh: add 'rescan' callback 2016-02-23 21:27:02 -05:00
scsi_driver.h scsi: scsi_error: count medium access timeout only once per EH run 2017-04-06 13:07:32 -04:00
scsi_eh.h scsi: Improve scsi_get_sense_info_fld 2017-04-25 13:00:56 -04:00
scsi_host.h scsi: make asynchronous aborts mandatory 2017-04-06 13:07:33 -04:00
scsi_ioctl.h scsi: split scsi_nonblockable_ioctl 2014-11-12 11:16:11 +01:00
scsi_proto.h SCSI misc on 20170704 2017-07-06 12:10:33 -07:00
scsi_request.h block: Change argument type of scsi_req_init() 2017-06-20 19:27:14 -06:00
scsi_tcq.h scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
scsi_transport_fc.h scsi: fc: drop residual tsk_mgmt_response and it_nexus_response 2017-06-26 15:00:59 -04:00
scsi_transport_iscsi.h iSCSI: let session recovery_tmo sysfs writes persist across recovery 2015-07-30 12:43:00 -07:00
scsi_transport_sas.h scsi: sas: remove is_sas_attached() 2016-08-18 22:23:20 -04:00
scsi_transport_spi.h scsi: remove abuses of scsi_populate_tag 2014-11-12 11:19:41 +01:00
scsi_transport_srp.h scsi: remove tsk_mgmt_response and it_nexus_response transport methods 2017-02-06 19:10:41 -05:00
scsi_transport.h SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
scsi.h scsi: remove useless acpi functions in the header file 2017-01-10 23:13:58 -05:00
scsicam.h
sg.h scsi: sg: disable SET_FORCE_LOW_DMA 2017-04-11 20:55:20 -04:00
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