55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#ifndef _LINUX_MMAP_LOCK_H
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#define _LINUX_MMAP_LOCK_H
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static inline void mmap_init_lock(struct mm_struct *mm)
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{
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init_rwsem(&mm->mmap_sem);
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}
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static inline void mmap_write_lock(struct mm_struct *mm)
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{
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down_write(&mm->mmap_sem);
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}
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static inline int mmap_write_lock_killable(struct mm_struct *mm)
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{
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return down_write_killable(&mm->mmap_sem);
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}
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static inline bool mmap_write_trylock(struct mm_struct *mm)
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{
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return down_write_trylock(&mm->mmap_sem) != 0;
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}
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static inline void mmap_write_unlock(struct mm_struct *mm)
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{
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up_write(&mm->mmap_sem);
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}
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static inline void mmap_write_downgrade(struct mm_struct *mm)
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{
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downgrade_write(&mm->mmap_sem);
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}
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static inline void mmap_read_lock(struct mm_struct *mm)
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{
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down_read(&mm->mmap_sem);
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}
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static inline int mmap_read_lock_killable(struct mm_struct *mm)
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{
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return down_read_killable(&mm->mmap_sem);
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}
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static inline bool mmap_read_trylock(struct mm_struct *mm)
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{
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return down_read_trylock(&mm->mmap_sem) != 0;
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}
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static inline void mmap_read_unlock(struct mm_struct *mm)
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{
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up_read(&mm->mmap_sem);
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}
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#endif /* _LINUX_MMAP_LOCK_H */
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