kernel/drivers/scsi/device_handler/scsi_dh_rdac.c, branch linux-4.3.y

scsi_dh: kill struct scsi_dh_data

2015-08-28T20:14:57Z

Add a ->handler and a ->handler_data field to struct scsi_device and kill this indirection. Also move struct scsi_device_handler to scsi_dh.h so that changes to it don't require rebuilding every SCSI LLDD. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Signed-off-by: James Bottomley

scsi_dh: move device matching to the core code

2015-08-28T20:14:56Z

Add a single list of devices that need non-ALUA device handlers to the core scsi_dh code so that we can autoload the modules for them at probe time. While this is a little ugly in terms of architecture it actually significantly simplifies the code in addition to the new autoloading functionality. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Acked-by: Mike Snitzer Signed-off-by: James Bottomley

scsi: handle more device handler setup/teardown in common code

2014-11-12T10:19:36Z

Move all code to set up and tear down sdev->scsi_dh_data to common code. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

scsi: remove struct scsi_dh_devlist

2014-11-12T10:19:29Z

All drivers now do their own matching, so there is no more need to expose a device list as part of the interface. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

scsi: use container_of to get at device handler private data

2014-11-12T10:19:25Z

Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

scsi_dh: get module reference outside of device handler

2014-11-12T10:19:22Z

We need to grab a reference to the module before calling the attach routines to avoid a small race vs module removal. It also cleans up the code significantly as a side effect. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

block,scsi: fixup blk_get_request dead queue scenarios

2014-08-28T16:03:46Z

The blk_get_request function may fail in low-memory conditions or during device removal (even if __GFP_WAIT is set). To distinguish between these errors, modify the blk_get_request call stack to return the appropriate ERR_PTR. Verify that all callers check the return status and consider IS_ERR instead of a simple NULL pointer check. For consistency, make a similar change to the blk_mq_alloc_request leg of blk_get_request. It may fail if the queue is dead, or the caller was unwilling to wait. Signed-off-by: Joe Lawrence Acked-by: Jiri Kosina [for pktdvd] Acked-by: Boaz Harrosh [for osd] Reviewed-by: Jeff Moyer Signed-off-by: Jens Axboe

block: add blk_rq_set_block_pc()

2014-06-06T13:57:37Z

With the optimizations around not clearing the full request at alloc time, we are leaving some of the needed init for REQ_TYPE_BLOCK_PC up to the user allocating the request. Add a blk_rq_set_block_pc() that sets the command type to REQ_TYPE_BLOCK_PC, and properly initializes the members associated with this type of request. Update callers to use this function instead of manipulating rq->cmd_type directly. Includes fixes from Christoph Hellwig for my half-assed attempt. Signed-off-by: Jens Axboe

[SCSI] scsi_dh_rdac: Add new IBM 1813 product id to rdac devlist

2013-10-25T08:57:55Z

Signed-off-by: Sean Stewart Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : minor return fix for rdac

2012-09-24T08:11:03Z

Signed-off-by: Babu Moger Signed-off-by: James Bottomley