path: root/include/linux
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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-29 10:33:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-29 10:33:41 -0700
commita3c0e7b1fe1fc62bba5f591c4bc404eea96823b8 (patch)
tree494409b373e8d43e72c88d228e77f3d3aaf46a91 /include/linux
parent939ca9f1751d1d65424f80b9284b6c18e78c7f4e (diff)
parent4c806b897d6075bfa5067e524fb058c57ab64e7b (diff)
Merge tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
More libnvdimm updates from Dan Williams: - Complete the reworks to interoperate with powerpc dynamic huge page sizes - Fix a crash due to missed accounting for the powerpc 'struct page'-memmap mapping granularity - Fix badblock initialization for volatile (DRAM emulated) pmem ranges - Stop triggering request_key() notifications to userspace when NVDIMM-security is disabled / not present - Miscellaneous small fixups * tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm/region: Enable MAP_SYNC for volatile regions libnvdimm: prevent nvdimm from requesting key when security is disabled libnvdimm/region: Initialize bad block for volatile namespaces libnvdimm/nfit_test: Fix acpi_handle redefinition libnvdimm/altmap: Track namespace boundaries in altmap libnvdimm: Fix endian conversion issues  libnvdimm/dax: Pick the right alignment default when creating dax devices powerpc/book3s64: Export has_transparent_hugepage() related functions.
Diffstat (limited to 'include/linux')
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 61c9ffd89b05..93d5cf0bc716 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -108,7 +108,12 @@ static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
if (transparent_hugepage_flags & (1 << TRANSPARENT_HUGEPAGE_FLAG))
return true;
+ /*
+ * For dax vmas, try to always use hugepage mappings. If the kernel does
+ * not support hugepages, fsdax mappings will fallback to PAGE_SIZE
+ * mappings, and device-dax namespaces, that try to guarantee a given
+ * mapping size, will fail to enable
+ */
if (vma_is_dax(vma))
return true;
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index bef51e35d8d2..6fefb09af7c3 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -17,6 +17,7 @@ struct device;
struct vmem_altmap {
const unsigned long base_pfn;
+ const unsigned long end_pfn;
const unsigned long reserve;
unsigned long free;
unsigned long align;

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