linux-dev/drivers/scsi/device_handler/scsi_dh.c, branch linus/master

scsi_dh: move to drivers/scsi

2015-08-28T20:14:55Z

Prepare for building scsi_dh.c into the core SCSI module by moving it to drivers/scsi. Signed-off-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: James Bottomley

dm-mpath, scsi_dh: request scsi_dh modules in scsi_dh, not dm-mpath

2015-08-28T20:14:55Z

This way we can reused the same code any attachment method, not just those requested from dm-mpath. [jejb: fixup checkpatch error] Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Acked-by: Mike Snitzer Signed-off-by: James Bottomley

dm-mpath, scsi_dh: don't let dm detach device handlers

2015-08-28T20:14:54Z

While allowing dm-mpath to attach device handlers is a functionality we need for backwards compatibility reason there is no reason to reference count them and detach them if dm-mpath stops using the device for some reason. If the device handler works for the given device it can just stay attached, and we can take the retain_hw_handler codepath. Signed-off-by: Christoph Hellwig Acked-by: Mike Snitzer Acked-by: Hannes Reinecke Signed-off-by: James Bottomley

scsi: fix device handler detach oops

2015-02-02T12:45:28Z

This fixes a regression caused by commit 1d5203 ("scsi: handle more device handler setup/teardown in common code"). The bug is that the alua detach() callout will try to access the sddev->scsi_dh_data, but we have already set it to NULL. This patch moves the clearing of that field to after detach() is called. Signed-off-by: Mike Christie Signed-off-by: Christoph Hellwig

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: device handlers must have attach and detach methods

2014-11-12T10:19:33Z

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

[SCSI] scsi_dh: add scsi_dh_attached_handler_name

2012-07-20T07:58:42Z

Introduce scsi_dh_attached_handler_name() to retrieve the name of the scsi_dh that is attached to the scsi_device associated with the provided request queue. Returns NULL if a scsi_dh is not attached. Also, fix scsi_dh_{attach,detach} function header comments to document @q rather than @sdev. Signed-off-by: Mike Snitzer Tested-by: Babu Moger Reviewed-by: Chandra Seetharaman Acked-by: Hannes Reinecke Signed-off-by: James Bottomley

[SCSI] scsi_dh: code cleanup and remove the references to scsi_dev_info

2011-12-15T06:55:00Z

All the handlers have now implemented the match function so We don't need to use scsi_dev_info any more for matching purposes. Signed-off-by: Babu Moger Acked-by: Hannes Reinecke Signed-off-by: James Bottomley

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-07T03:44:47Z

* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include net: sch_generic remove redundant use of net: inet_timewait_sock doesnt need ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h