From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/nvdimm/pmem.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 drivers/nvdimm/pmem.h (limited to 'drivers/nvdimm/pmem.h') diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h new file mode 100644 index 000000000..59cfe13ea --- /dev/null +++ b/drivers/nvdimm/pmem.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __NVDIMM_PMEM_H__ +#define __NVDIMM_PMEM_H__ +#include +#include +#include +#include +#include + +/* this definition is in it's own header for tools/testing/nvdimm to consume */ +struct pmem_device { + /* One contiguous memory region per device */ + phys_addr_t phys_addr; + /* when non-zero this device is hosting a 'pfn' instance */ + phys_addr_t data_offset; + u64 pfn_flags; + void *virt_addr; + /* immutable base size of the namespace */ + size_t size; + /* trim size when namespace capacity has been section aligned */ + u32 pfn_pad; + struct kernfs_node *bb_state; + struct badblocks bb; + struct dax_device *dax_dev; + struct gendisk *disk; + struct dev_pagemap pgmap; +}; + +long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff, + long nr_pages, void **kaddr, pfn_t *pfn); + +#ifdef CONFIG_MEMORY_FAILURE +static inline bool test_and_clear_pmem_poison(struct page *page) +{ + return TestClearPageHWPoison(page); +} +#else +static inline bool test_and_clear_pmem_poison(struct page *page) +{ + return false; +} +#endif +#endif /* __NVDIMM_PMEM_H__ */ -- cgit v1.2.3