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#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 */