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93542fbfa7
linux/include/scsi
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Ming Lei 93542fbfa7 scsi: make sure that request queue queiesce and unquiesce balanced 
For fixing queue quiesce race between driver and block layer(elevator
switch, update nr_requests, ...), we need to support concurrent quiesce
and unquiesce, which requires the two call balanced.

It isn't easy to audit that in all scsi drivers, especially the two may
be called from different contexts, so do it in scsi core with one
per-device atomic variable to balance quiesce and unquiesce.

Reported-by: Yi Zhang <yi.zhang@redhat.com>
Fixes: e70feb8b3e ("blk-mq: support concurrent queue quiesce/unquiesce")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20211109071144.181581-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-09 08:14:27 -07:00
..
fc scsi: fc: FDMI enhancement 2021-06-10 00:03:56 -04:00
fc_frame.h scsi: libfc: Move scsi/fc_encode.h to libfc 2020-10-29 21:49:25 -04:00
fcoe_sysfs.h
iscsi_if.h scsi: iscsi: Add support for asynchronous iSCSI session destruction 2020-03-11 23:07:57 -04:00
iscsi_proto.h scsi: Fix spelling mistakes in header files 2021-05-21 17:22:45 -04:00
iser.h
libfc.h scsi: Fix spelling mistakes in header files 2021-05-21 17:22:45 -04:00
libfcoe.h Fix misc new gcc warnings 2021-04-27 17:05:53 -07:00
libiscsi_tcp.h
libiscsi.h scsi: iscsi: Hold task ref during TMF timeout handling 2021-06-02 01:28:22 -04:00
libsas.h scsi: libsas: Introduce more SAM status code aliases in enum exec_status 2021-06-02 16:10:46 -04:00
sas_ata.h
sas.h scsi: libsas: Replace zero-length array with flexible-array 2020-05-11 22:26:32 -04:00
scsi_bsg_iscsi.h scsi: Fix spelling mistakes in header files 2021-05-21 17:22:45 -04:00
scsi_cmnd.h scsi: core: Remove scsi_cmnd.tag 2021-08-17 22:28:39 -04:00
scsi_common.h scsi: target: core: Add CONTROL field for trace events 2020-10-02 18:36:19 -04:00
scsi_dbg.h
scsi_device.h scsi: make sure that request queue queiesce and unquiesce balanced 2021-11-09 08:14:27 -07:00
scsi_devinfo.h scsi: core: Add new flag BLIST_IGN_MEDIA_CHANGE 2021-07-21 23:43:48 -04:00
scsi_dh.h scsi: core: Introduce enum scsi_disposition 2021-04-15 22:44:40 -04:00
scsi_driver.h
scsi_eh.h scsi: core: Introduce enum scsi_disposition 2021-04-15 22:44:40 -04:00
scsi_host.h scsi: core: Change the type of the second argument of scsi_host_complete_all_commands() 2021-06-02 23:09:39 -04:00
scsi_ioctl.h scsi: scsi_ioctl: Unexport sg_scsi_ioctl() 2021-07-28 22:24:28 -04:00
scsi_proto.h scsi: core: Introduce enums for the SAM and host status codes 2021-06-02 23:09:39 -04:00
scsi_request.h scsi: scsi_ioctl: Remove scsi_req_init() 2021-07-28 22:24:26 -04:00
scsi_status.h scsi: core: Introduce enums for the SAM and host status codes 2021-06-02 23:09:39 -04:00
scsi_tcq.h scsi: core: Only return started requests from scsi_host_find_tag() 2020-07-24 22:09:56 -04:00
scsi_transport_fc.h scsi: libfc: Add FDMI-2 attributes 2021-06-10 00:03:56 -04:00
scsi_transport_iscsi.h scsi: iscsi: Add iscsi_cls_conn refcount helpers 2021-06-02 01:28:20 -04:00
scsi_transport_sas.h
scsi_transport_spi.h
scsi_transport_srp.h
scsi_transport.h
scsi.h scsi: core: Introduce enums for the SAM and host status codes 2021-06-02 23:09:39 -04:00
scsicam.h scsi: simplify scsi_partsize 2020-03-24 07:57:07 -06:00
sg.h scsi: core: Drop obsolete Linux-specific SCSI status codes 2021-05-31 23:59:18 -04:00
srp.h RDMA/srp: Apply the __packed attribute to members instead of structures 2021-05-28 20:21:20 -03:00
viosrp.h