From: Ocean He
During runtime, if a namespace seed is used for new namespace creation
but fail, then it needs to be reset for next namespace creation.
Add function nd_region_reset_ns_seed for namespace seed reset and
declare it in nd-core.h.
Signed-off-by: Ocean He
---
drivers/nvdimm
From: Ocean He
During runtime, namespace creation may fail if blocked by
commit 15d36fecd0bdc7510b70 ("mm: disallow mappings that conflict for
devm_memremap_pages()"). To ensure pfn_seed/dax_seed and namespace_seed
are ready for next namespace creation, here to do detach and reset.
From: Ocean He
The function nd_detach_and_reset needs to be called externally, so
remove the static attribute and declare it in nd-core.h.
Signed-off-by: Ocean He
---
drivers/nvdimm/claim.c | 2 +-
drivers/nvdimm/nd-core.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git
From: Ocean He
When pmem namespaces created are smaller than section size twice, the
second creation would fail and meanwhile there is a kernel call trace
which comes from commit 15d36fecd0bdc7510b70 ("mm: disallow mappings that
conflict for devm_memremap_pages()").
---
From: Ocean He
There is no need to finish entire loop to execute NDD_ALIASING bit test
against every nvdimm->flags. In practice, all the nd_mapping->nvdimm
have the same flags. So it's safe to return ND_DEVICE_NAMESPACE_PMEM
if the NDD_ALIASING bit is found inside the loop, while saving
From: Ocean He
There is no need to finish entire loop to execute NDD_ALIASING bit test
against every nvdimm->flags. In practice, all the nd_mapping->nvdimm
have the same flags.
Because the check of alias is "if (alias)" but not
"if (alias == nd_region->ndr_mappings
From: Ocean He
In commit 6697b2cf69d43632 ("nfit: fix multi-interface dimm handling,
acpi6.1 compatibility"), the check codes of dcr were just following its
assignment codes. But they were separated by commit ad9ac5e1957531a8
("nfit: always associate flush hints").
Just ch
From: Ocean He
Add detail explanation why it's ok to return 0 if fail to find NFIT at
startup, refer to chapter 9.20.2 NVDIMM Root Device in ACPI 6.2 spec.
Signed-off-by: Ocean He
---
v1: https://lists.01.org/pipermail/linux-nvdimm/2018-August/017311.html
v2: Per Vishal's comments of v1
From: Ocean He
The id check was not executed immediately following ida_simple_get. Just
change the codes position, without function change.
Signed-off-by: Ocean He
---
drivers/nvdimm/bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nvdimm/bus.c b/drivers
From: Ocean He
In the beginning of acpi_nfit_add, if fail to find NFIT table then should
return -ENODEV, instead of 0.
Signed-off-by: Ocean He
---
drivers/acpi/nfit/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
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