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//usr/src/linux-headers-5.4.0-216/include/linux/mmap_lock.h
#ifndef _LINUX_MMAP_LOCK_H #define _LINUX_MMAP_LOCK_H static inline void mmap_init_lock(struct mm_struct *mm) { init_rwsem(&mm->mmap_sem); } static inline void mmap_write_lock(struct mm_struct *mm) { down_write(&mm->mmap_sem); } static inline int mmap_write_lock_killable(struct mm_struct *mm) { return down_write_killable(&mm->mmap_sem); } static inline bool mmap_write_trylock(struct mm_struct *mm) { return down_write_trylock(&mm->mmap_sem) != 0; } static inline void mmap_write_unlock(struct mm_struct *mm) { up_write(&mm->mmap_sem); } static inline void mmap_write_downgrade(struct mm_struct *mm) { downgrade_write(&mm->mmap_sem); } static inline void mmap_read_lock(struct mm_struct *mm) { down_read(&mm->mmap_sem); } static inline int mmap_read_lock_killable(struct mm_struct *mm) { return down_read_killable(&mm->mmap_sem); } static inline bool mmap_read_trylock(struct mm_struct *mm) { return down_read_trylock(&mm->mmap_sem) != 0; } static inline void mmap_read_unlock(struct mm_struct *mm) { up_read(&mm->mmap_sem); } #endif /* _LINUX_MMAP_LOCK_H */