linux/drivers/nvdimm
Vaibhav Jain a2948b17f6 libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC
In case a platform doesn't provide explicit flush-hints but provides an
explicit flush callback via ND_REGION_ASYNC region flag, then
nvdimm_has_flush() still returns '0' indicating that writes do not
require flushing. This happens on PPC64 with patch at [1] applied, where
'deep_flush' of a region was denied even though an explicit flush
function was provided.

Fix this by adding a condition to nvdimm_has_flush() to test for the
ND_REGION_ASYNC flag on the region and see if a 'region->flush' callback
is assigned.

Link: http://lore.kernel.org/r/161703936121.36.7260632399582101498.stgit@e1fbed493c87 [1]
Fixes: c5d4355d10 ("libnvdimm: nd_region flush callback support")
Reported-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Link: https://lore.kernel.org/r/20210402092555.208590-1-vaibhav@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2021-04-09 21:56:01 -07:00
..
badrange.c mm/memremap_pages: convert to 'struct range' 2020-10-13 18:38:28 -07:00
blk.c libnvdimm + device-dax for 5.12 2021-02-24 09:35:54 -08:00
btt_devs.c libnvdimm: Move attribute groups to device type 2019-11-17 09:17:38 -08:00
btt.c block: store a block_device pointer in struct bio 2021-01-24 18:17:20 -07:00
btt.h libnvdimm: Cleanup include of badblocks.h 2020-12-15 21:47:45 -08:00
bus.c libnvdimm: Notify disk drivers to revalidate region read-only 2021-04-08 22:18:36 -07:00
claim.c libnvdimm: Cleanup include of badblocks.h 2020-12-15 21:47:45 -08:00
core.c libnvdimm: Cleanup include of badblocks.h 2020-12-15 21:47:45 -08:00
dax_devs.c libnvdimm: Move attribute groups to device type 2019-11-17 09:17:38 -08:00
dimm_devs.c libnvdimm/dimm: Avoid race between probe and available_slots_show() 2021-02-01 16:20:40 -08:00
dimm.c libnvdimm: Make remove callback return void 2021-02-16 19:35:29 -08:00
e820.c libnvdimm/e820: Retrieve and populate correct 'target_node' info 2020-02-18 10:28:05 -08:00
Kconfig lib: Uplevel the pmem "region" ida to a global allocator 2019-11-07 15:44:29 +01:00
label.c libnvdimm/label: Return -ENXIO for no slot in __blk_label_update 2020-12-16 16:53:00 -08:00
label.h libnvdimm/label: Replace zero-length array with flexible-array member 2020-03-30 12:37:09 -07:00
Makefile libnvdimm: Enable unit test infrastructure compile checks 2019-09-07 04:28:05 -03:00
namespace_devs.c libnvdimm/namespace: Fix visibility of namespace resource attribute 2021-01-28 00:22:34 -08:00
nd_virtio.c virtio_pmem: fix sparse warning 2019-07-16 19:44:26 -07:00
nd-core.h PM, libnvdimm: Add runtime firmware activation support 2020-07-28 19:28:32 -06:00
nd.h mm/memremap_pages: convert to 'struct range' 2020-10-13 18:38:28 -07:00
of_pmem.c powerpc/pmem: Initialize pmem device on newer hardware 2020-07-16 13:00:23 +10:00
pfn_devs.c mm/memremap_pages: support multiple ranges per invocation 2020-10-13 18:38:28 -07:00
pfn.h libnvdimm/namespace: Enforce memremap_compat_align() 2020-03-17 12:23:21 -07:00
pmem.c libnvdimm: Notify disk drivers to revalidate region read-only 2021-04-08 22:18:36 -07:00
pmem.h libnvdimm, pmem: Restore page attributes when clearing errors 2018-08-20 09:22:45 -07:00
region_devs.c libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNC 2021-04-09 21:56:01 -07:00
region.c libnvdimm: Make remove callback return void 2021-02-16 19:35:29 -08:00
security.c libnvdimm for 5.9 2020-08-11 10:59:19 -07:00
virtio_pmem.c virtio_pmem: convert to LE accessors 2020-08-05 11:08:41 -04:00
virtio_pmem.h virtio-pmem: Add virtio pmem driver 2019-07-05 15:19:10 -07:00