Jan Kara d6712eefc7 dm: Call proper helper to determine dax support ... commit e2ec512825 upstream. DM was calling generic_fsdax_supported() to determine whether a device referenced in the DM table supports DAX. However this is a helper for "leaf" device drivers so that they don't have to duplicate common generic checks. High level code should call dax_supported() helper which that calls into appropriate helper for the particular device. This problem manifested itself as kernel messages: dm-3: error: dax access failed (-95) when lvm2-testsuite run in cases where a DM device was stacked on top of another DM device. Fixes: 7bf7eac8d6 ("dax: Arrange for dax_supported check to span multiple devices") Cc: <stable@vger.kernel.org> Tested-by: Adrian Huang <ahuang12@lenovo.com> Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Mike Snitzer <snitzer@redhat.com> Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/r/160061715195.13131.5503173247632041975.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-09-23 12:40:47 +02:00
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pmem	memremap: move dev_pagemap callbacks into a separate structure	2019-07-02 14:32:44 -03:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	device-dax: "Hotplug" persistent memory for use like normal RAM	2019-02-28 10:41:23 -08:00
bus.c	- Fix a hang condition that started triggering after the Xarray	2019-07-18 10:58:52 -07:00
bus.h	acpi/nfit, device-dax: Identify differentiated memory with a unique numa-node	2019-01-06 21:41:57 -08:00
dax-private.h	device-dax: "Hotremove" persistent memory that is used like normal RAM	2019-07-16 19:23:24 -07:00
device.c	device-dax: use the dev_pagemap internal refcount	2019-07-02 14:32:44 -03:00
kmem.c	device-dax: don't leak kernel memory to user space after unloading kmem	2020-05-27 17:46:48 +02:00
super.c	dm: Call proper helper to determine dax support	2020-09-23 12:40:47 +02:00