linux/drivers/nvdimm/pmem.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NVDIMM_PMEM_H__
#define __NVDIMM_PMEM_H__
#include <linux/page-flags.h>
#include <linux/badblocks.h>
#include <linux/memremap.h>
#include <linux/types.h>
#include <linux/pfn_t.h>
#include <linux/fs.h>

enum dax_access_mode;

/* this definition is in it's own header for tools/testing/nvdimm to consume */
struct pmem_device { … };

long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
		long nr_pages, enum dax_access_mode mode, void **kaddr,
		pfn_t *pfn);

#ifdef CONFIG_MEMORY_FAILURE
static inline bool test_and_clear_pmem_poison(struct page *page)
{ … }
#else
static inline bool test_and_clear_pmem_poison(struct page *page)
{
	return false;
}
#endif
#endif /* __NVDIMM_PMEM_H__ */