diff options
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/nvdimm/bus.c | 4 | ||||
| -rw-r--r-- | drivers/nvdimm/e820.c | 1 | ||||
| -rw-r--r-- | drivers/nvdimm/label.c | 2 | ||||
| -rw-r--r-- | drivers/nvdimm/label.h | 2 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 11 |
6 files changed, 15 insertions, 6 deletions
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig index 5e27918e4624..54500798f23a 100644 --- a/drivers/nvdimm/Kconfig +++ b/drivers/nvdimm/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only menuconfig LIBNVDIMM tristate "NVDIMM (Non-Volatile Memory Device) Support" depends on PHYS_ADDR_T_64BIT diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 7ff684159f29..2eb6a6cfe9e4 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -642,7 +642,7 @@ static struct attribute *nd_device_attributes[] = { NULL, }; -/** +/* * nd_device_attribute_group - generic attributes for all devices on an nd bus */ struct attribute_group nd_device_attribute_group = { @@ -671,7 +671,7 @@ static umode_t nd_numa_attr_visible(struct kobject *kobj, struct attribute *a, return a->mode; } -/** +/* * nd_numa_attribute_group - NUMA attributes for all devices on an nd bus */ struct attribute_group nd_numa_attribute_group = { diff --git a/drivers/nvdimm/e820.c b/drivers/nvdimm/e820.c index 36be9b619187..87f72f725e4f 100644 --- a/drivers/nvdimm/e820.c +++ b/drivers/nvdimm/e820.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2015, Christoph Hellwig. * Copyright (c) 2015, Intel Corporation. diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index 2030805aa216..edf278067e72 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -25,6 +25,8 @@ static guid_t nvdimm_btt2_guid; static guid_t nvdimm_pfn_guid; static guid_t nvdimm_dax_guid; +static const char NSINDEX_SIGNATURE[] = "NAMESPACE_INDEX\0"; + static u32 best_seq(u32 a, u32 b) { a &= NSINDEX_SEQ_MASK; diff --git a/drivers/nvdimm/label.h b/drivers/nvdimm/label.h index e9a2ad3c2150..4bb7add39580 100644 --- a/drivers/nvdimm/label.h +++ b/drivers/nvdimm/label.h @@ -38,8 +38,6 @@ enum { ND_NSINDEX_INIT = 0x1, }; -static const char NSINDEX_SIGNATURE[] = "NAMESPACE_INDEX\0"; - /** * struct nd_namespace_index - label set superblock * @sig: NAMESPACE_INDEX\0 diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 0279eb1da3ef..d9d845077b8b 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -281,20 +281,27 @@ static long pmem_dax_direct_access(struct dax_device *dax_dev, return __pmem_direct_access(pmem, pgoff, nr_pages, kaddr, pfn); } +/* + * Use the 'no check' versions of copy_from_iter_flushcache() and + * copy_to_iter_mcsafe() to bypass HARDENED_USERCOPY overhead. Bounds + * checking, both file offset and device offset, is handled by + * dax_iomap_actor() + */ static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) { - return copy_from_iter_flushcache(addr, bytes, i); + return _copy_from_iter_flushcache(addr, bytes, i); } static size_t pmem_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) { - return copy_to_iter_mcsafe(addr, bytes, i); + return _copy_to_iter_mcsafe(addr, bytes, i); } static const struct dax_operations pmem_dax_ops = { .direct_access = pmem_dax_direct_access, + .dax_supported = generic_fsdax_supported, .copy_from_iter = pmem_copy_from_iter, .copy_to_iter = pmem_copy_to_iter, }; |
