77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _XFORK_H
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#define _XFORK_H
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struct mm_struct;
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struct vm_area_struct;
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#ifdef CONFIG_XFORK
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#define get_xfork_mm(mm) ((struct mm_struct *)(mm->kabi_reserved1))
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#define set_xfork_mm(mm, val) (mm->kabi_reserved1 = (unsigned long)val)
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#define get_xfork_vma(vma) ((struct vm_area_struct *)(vma->kabi_reserved1))
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#define set_xfork_vma(vma, val) (vma->kabi_reserved1 = (unsigned long)val)
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int memcg_xfork_enable(struct task_struct *p);
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int xfork_quick_copy_page_range(struct vm_area_struct *dst_vma,
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struct vm_area_struct *src_vma);
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bool pmd_wrprotect_by_xfork(pmd_t pmd);
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void xfork_fixup_pmd(struct vm_area_struct *mpnt, pmd_t *pmd, unsigned long addr);
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void xfork_wait_vma_copy_done(struct vm_area_struct *vma);
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void xfork_copy_update(void);
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void xfork_copy_cleanup(struct mm_struct *mm);
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void xfork_copy_handshake(struct mm_struct *parent, struct mm_struct *child, int val);
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#else
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#define get_xfork_mm(mm) do { } while (0)
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#define set_xfork_mm(mm, val) do { } while (0)
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#define get_xfork_vma(vma) do { } while (0)
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#define set_xfork_vma(vma, val) do { } while (0)
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static inline int __maybe_unused memcg_xfork_enable(struct task_struct *p)
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{
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return 0;
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}
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static inline int __maybe_unused xfork_quick_copy_page_range(struct vm_area_struct *dst_vma,
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struct vm_area_struct *src_vma)
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{
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return 0;
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}
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static bool __maybe_unused pmd_wrprotect_by_xfork(pmd_t pmd)
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{
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return false;
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}
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static inline void __maybe_unused xfork_fixup_pmd(struct vm_area_struct *mpnt,
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pmd_t *pmd, unsigned long addr)
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{
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}
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static inline void __maybe_unused xfork_wait_vma_copy_done(struct vm_area_struct *vma)
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{
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}
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static inline void __maybe_unused xfork_copy_update(void)
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{
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}
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static inline void __maybe_unused xfork_copy_cleanup(struct mm_struct *mm)
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{
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}
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static void __maybe_unused xfork_copy_handshake(struct mm_struct *parent,
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struct mm_struct *child, int val)
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{
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}
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#endif
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#endif
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