tools/testing/nvdimm/dax-dev.c

File Facts

System

Linux kernel

Corpus path

tools/testing/nvdimm/dax-dev.c

Extension

.c

Size

963 bytes

Lines

40

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• test/nfit_test.h
• linux/mm.h
• ../../../drivers/dax/dax-private.h

Detected Declarations

• function Copyright

Annotated Snippet

if (addr + size - 1 <= range->end) {
			if (get_nfit_res(addr)) {
				struct page *page;

				if (dev_dax->region->align > PAGE_SIZE)
					return -1;

				page = vmalloc_to_page((void *)addr);
				return PFN_PHYS(page_to_pfn(page));
			}
			return addr;
		}
		break;
	}
	return -1;
}

Annotation

• Immediate include surface: `test/nfit_test.h`, `linux/mm.h`, `../../../drivers/dax/dax-private.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.