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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-13 17:35:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-13 17:35:48 -0800 |
| commit | 2870f6c4d136e093e22159b8916918ff42c92218 (patch) | |
| tree | f822a4fa9f72a901a40eda4a12dc0055ff8f6266 /drivers | |
| parent | 934f98d7e8123892bd9ca8ea08728ee0784e6597 (diff) | |
| parent | 152d7bd80dca5ce77ec2d7313149a2ab990e808e (diff) | |
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- three fixes tagged for -stable including a crash fix, simple
performance tweak, and an invalid i/o error.
- build regression fix for the nvdimm unit tests
- nvdimm documentation update
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: fix __dax_pmd_fault crash
libnvdimm: documentation clarifications
libnvdimm, pmem: fix size trim in pmem_direct_access()
libnvdimm, e820: fix numa node for e820-type-12 pmem ranges
tools/testing/nvdimm, acpica: fix flag rename build breakage
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvdimm/e820.c | 15 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 15 |
2 files changed, 16 insertions, 14 deletions
diff --git a/drivers/nvdimm/e820.c b/drivers/nvdimm/e820.c index 8282db2ef99e..b0045a505dc8 100644 --- a/drivers/nvdimm/e820.c +++ b/drivers/nvdimm/e820.c @@ -3,6 +3,7 @@ * Copyright (c) 2015, Intel Corporation. */ #include <linux/platform_device.h> +#include <linux/memory_hotplug.h> #include <linux/libnvdimm.h> #include <linux/module.h> @@ -25,6 +26,18 @@ static int e820_pmem_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_MEMORY_HOTPLUG +static int e820_range_to_nid(resource_size_t addr) +{ + return memory_add_physaddr_to_nid(addr); +} +#else +static int e820_range_to_nid(resource_size_t addr) +{ + return NUMA_NO_NODE; +} +#endif + static int e820_pmem_probe(struct platform_device *pdev) { static struct nvdimm_bus_descriptor nd_desc; @@ -48,7 +61,7 @@ static int e820_pmem_probe(struct platform_device *pdev) memset(&ndr_desc, 0, sizeof(ndr_desc)); ndr_desc.res = p; ndr_desc.attr_groups = e820_pmem_region_attribute_groups; - ndr_desc.numa_node = NUMA_NO_NODE; + ndr_desc.numa_node = e820_range_to_nid(p->start); set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags); if (!nvdimm_pmem_region_create(nvdimm_bus, &ndr_desc)) goto err; diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 012e0649f1ac..8ee79893d2f5 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -105,22 +105,11 @@ static long pmem_direct_access(struct block_device *bdev, sector_t sector, { struct pmem_device *pmem = bdev->bd_disk->private_data; resource_size_t offset = sector * 512 + pmem->data_offset; - resource_size_t size; - - if (pmem->data_offset) { - /* - * Limit the direct_access() size to what is covered by - * the memmap - */ - size = (pmem->size - offset) & ~ND_PFN_MASK; - } else - size = pmem->size - offset; - - /* FIXME convert DAX to comprehend that this mapping has a lifetime */ + *kaddr = pmem->virt_addr + offset; *pfn = (pmem->phys_addr + offset) >> PAGE_SHIFT; - return size; + return pmem->size - offset; } static const struct block_device_operations pmem_fops = { |