44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
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/*
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* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __NVMAP_VMA_H
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#define __NVMAP_VMA_H
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#include "nvmap_structs.h"
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// TODO pretty sure list and priv can be merged into one structure
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struct nvmap_vma_list {
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struct list_head list;
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struct vm_area_struct *vma;
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unsigned long save_vm_flags;
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pid_t pid;
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atomic_t ref;
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};
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struct nvmap_vma_priv {
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struct nvmap_handle *handle;
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size_t offs;
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atomic_t count; /* number of processes cloning the VMA */
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};
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int nvmap_vma_is_nvmap(struct vm_area_struct *vma);
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int nvmap_vma_belongs_to_handle(struct vm_area_struct *vma,
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struct nvmap_handle *h);
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void nvmap_vma_zap(struct list_head *vmas, u64 offset, u64 size);
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int nvmap_vma_list_prot(struct nvmap_vma_list *vma_list, u64 offset,
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u64 size, int handle_is_dirty, int op);
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#endif /* __NVMAP_VMA_H */
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