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21aa65bf82
All PFN_* pfn_t flags have been removed. Therefore there is no longer a need for the pfn_t type and all uses can be replaced with normal pfns. Link: https://lkml.kernel.org/r/bbedfa576c9822f8032494efbe43544628698b1f.1750323463.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Balbir Singh <balbirs@nvidia.com> Cc: Björn Töpel <bjorn@kernel.org> Cc: Björn Töpel <bjorn@rivosinc.com> Cc: Chunyan Zhang <zhang.lyra@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Deepak Gupta <debug@rivosinc.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Inki Dae <m.szyprowski@samsung.com> Cc: John Groves <john@groves.net> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __NVDIMM_PMEM_H__
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#define __NVDIMM_PMEM_H__
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#include <linux/page-flags.h>
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#include <linux/badblocks.h>
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#include <linux/memremap.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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enum dax_access_mode;
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/* this definition is in it's own header for tools/testing/nvdimm to consume */
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struct pmem_device {
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/* One contiguous memory region per device */
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phys_addr_t phys_addr;
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/* when non-zero this device is hosting a 'pfn' instance */
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phys_addr_t data_offset;
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void *virt_addr;
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/* immutable base size of the namespace */
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size_t size;
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/* trim size when namespace capacity has been section aligned */
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u32 pfn_pad;
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struct kernfs_node *bb_state;
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struct badblocks bb;
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struct dax_device *dax_dev;
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struct gendisk *disk;
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struct dev_pagemap pgmap;
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};
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long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
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long nr_pages, enum dax_access_mode mode, void **kaddr,
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unsigned long *pfn);
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#ifdef CONFIG_MEMORY_FAILURE
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static inline bool test_and_clear_pmem_poison(struct page *page)
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{
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return TestClearPageHWPoison(page);
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}
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#else
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static inline bool test_and_clear_pmem_poison(struct page *page)
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{
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return false;
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}
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#endif
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#endif /* __NVDIMM_PMEM_H__ */
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