diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-05 18:49:20 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-05 18:49:20 -0700 |
commit | 53ef7d0e208fa38c3f63d287e0c3ab174f1e1235 (patch) | |
tree | 7d437edf73ef6deb0d77ce291aa25f041837d056 /include/linux/pmem.h | |
parent | c6a677c6f37bb7abc85ba7e3465e82b9f7eb1d91 (diff) | |
parent | 736163671bcb163fc82600b46c83dfa89d532d95 (diff) |
Merge tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"The bulk of this has been in multiple -next releases. There were a few
late breaking fixes and small features that got added in the last
couple days, but the whole set has received a build success
notification from the kbuild robot.
Change summary:
- Region media error reporting: A libnvdimm region device is the
parent to one or more namespaces. To date, media errors have been
reported via the "badblocks" attribute attached to pmem block
devices for namespaces in "raw" or "memory" mode. Given that
namespaces can be in "device-dax" or "btt-sector" mode this new
interface reports media errors generically, i.e. independent of
namespace modes or state.
This subsequently allows userspace tooling to craft "ACPI 6.1
Section 9.20.7.6 Function Index 4 - Clear Uncorrectable Error"
requests and submit them via the ioctl path for NVDIMM root bus
devices.
- Introduce 'struct dax_device' and 'struct dax_operations': Prompted
by a request from Linus and feedback from Christoph this allows for
dax capable drivers to publish their own custom dax operations.
This fixes the broken assumption that all dax operations are
related to a persistent memory device, and makes it easier for
other architectures and platforms to add customized persistent
memory support.
- 'libnvdimm' core updates: A new "deep_flush" sysfs attribute is
available for storage appliance applications to manually trigger
memory controllers to drain write-pending buffers that would
otherwise be flushed automatically by the platform ADR
(asynchronous-DRAM-refresh) mechanism at a power loss event.
Support for "locked" DIMMs is included to prevent namespaces from
surfacing when the namespace label data area is locked. Finally,
fixes for various reported deadlocks and crashes, also tagged for
-stable.
- ACPI / nfit driver updates: General updates of the nfit driver to
add DSM command overrides, ACPI 6.1 health state flags support, DSM
payload debug available by default, and various fixes.
Acknowledgements that came after the branch was pushed:
- commmit 565851c972b5 "device-dax: fix sysfs attribute deadlock":
Tested-by: Yi Zhang <yizhan@redhat.com>
- commit 23f498448362 "libnvdimm: rework region badblocks clearing"
Tested-by: Toshi Kani <toshi.kani@hpe.com>"
* tag 'libnvdimm-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (52 commits)
libnvdimm, pfn: fix 'npfns' vs section alignment
libnvdimm: handle locked label storage areas
libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED
brd: fix uninitialized use of brd->dax_dev
block, dax: use correct format string in bdev_dax_supported
device-dax: fix sysfs attribute deadlock
libnvdimm: restore "libnvdimm: band aid btt vs clear poison locking"
libnvdimm: fix nvdimm_bus_lock() vs device_lock() ordering
libnvdimm: rework region badblocks clearing
acpi, nfit: kill ACPI_NFIT_DEBUG
libnvdimm: fix clear length of nvdimm_forget_poison()
libnvdimm, pmem: fix a NULL pointer BUG in nd_pmem_notify
libnvdimm, region: sysfs trigger for nvdimm_flush()
libnvdimm: fix phys_addr for nvdimm_clear_poison
x86, dax, pmem: remove indirection around memcpy_from_pmem()
block: remove block_device_operations ->direct_access()
block, dax: convert bdev_dax_supported() to dax_direct_access()
filesystem-dax: convert to dax_direct_access()
Revert "block: use DAX for partition table reads"
ext2, ext4, xfs: retrieve dax_device for iomap operations
...
Diffstat (limited to 'include/linux/pmem.h')
-rw-r--r-- | include/linux/pmem.h | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/include/linux/pmem.h b/include/linux/pmem.h index e856c2cb0fe8..71ecf3d46aac 100644 --- a/include/linux/pmem.h +++ b/include/linux/pmem.h @@ -31,12 +31,6 @@ static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n) BUG(); } -static inline int arch_memcpy_from_pmem(void *dst, const void *src, size_t n) -{ - BUG(); - return -EFAULT; -} - static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes, struct iov_iter *i) { @@ -65,23 +59,6 @@ static inline bool arch_has_pmem_api(void) return IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API); } -/* - * memcpy_from_pmem - read from persistent memory with error handling - * @dst: destination buffer - * @src: source buffer - * @size: transfer length - * - * Returns 0 on success negative error code on failure. - */ -static inline int memcpy_from_pmem(void *dst, void const *src, size_t size) -{ - if (arch_has_pmem_api()) - return arch_memcpy_from_pmem(dst, src, size); - else - memcpy(dst, src, size); - return 0; -} - /** * memcpy_to_pmem - copy data to persistent memory * @dst: destination buffer for the copy |