20 void __mmap_lock_do_trace_start_locking(struct mm_struct *mm, bool write);
21 void __mmap_lock_do_trace_acquire_returned(struct mm_struct *mm, bool write,
23 void __mmap_lock_do_trace_released(struct mm_struct *mm, bool write);
25 static inline void __mmap_lock_trace_start_locking(struct mm_struct *mm,  in __mmap_lock_trace_start_locking()  argument
29 		__mmap_lock_do_trace_start_locking(mm, write);  in __mmap_lock_trace_start_locking()
32 static inline void __mmap_lock_trace_acquire_returned(struct mm_struct *mm,  in __mmap_lock_trace_acquire_returned()  argument
36 		__mmap_lock_do_trace_acquire_returned(mm, write, success);  in __mmap_lock_trace_acquire_returned()
39 static inline void __mmap_lock_trace_released(struct mm_struct *mm, bool write)  in __mmap_lock_trace_released()  argument
42 		__mmap_lock_do_trace_released(mm, write);  in __mmap_lock_trace_released()
47 static inline void __mmap_lock_trace_start_locking(struct mm_struct *mm,  in __mmap_lock_trace_start_locking()  argument
52 static inline void __mmap_lock_trace_acquire_returned(struct mm_struct *mm,  in __mmap_lock_trace_acquire_returned()  argument
57 static inline void __mmap_lock_trace_released(struct mm_struct *mm, bool write)  in __mmap_lock_trace_released()  argument
63 static inline void mmap_assert_locked(const struct mm_struct *mm)  in mmap_assert_locked()  argument
65 	rwsem_assert_held(&mm->mmap_lock);  in mmap_assert_locked()
68 static inline void mmap_assert_write_locked(const struct mm_struct *mm)  in mmap_assert_write_locked()  argument
70 	rwsem_assert_held_write(&mm->mmap_lock);  in mmap_assert_write_locked()
82 static inline void vma_end_write_all(struct mm_struct *mm)  in vma_end_write_all()  argument
84 	mmap_assert_write_locked(mm);  in vma_end_write_all()
86 	 * Nobody can concurrently modify mm->mm_lock_seq due to exclusive  in vma_end_write_all()
92 	smp_store_release(&mm->mm_lock_seq, mm->mm_lock_seq + 1);  in vma_end_write_all()
95 static inline void vma_end_write_all(struct mm_struct *mm) {}  in vma_end_write_all()  argument
98 static inline void mmap_init_lock(struct mm_struct *mm)  in mmap_init_lock()  argument
100 	init_rwsem(&mm->mmap_lock);  in mmap_init_lock()
103 static inline void mmap_write_lock(struct mm_struct *mm)  in mmap_write_lock()  argument
105 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock()
106 	down_write(&mm->mmap_lock);  in mmap_write_lock()
107 	__mmap_lock_trace_acquire_returned(mm, true, true);  in mmap_write_lock()
110 static inline void mmap_write_lock_nested(struct mm_struct *mm, int subclass)  in mmap_write_lock_nested()  argument
112 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock_nested()
113 	down_write_nested(&mm->mmap_lock, subclass);  in mmap_write_lock_nested()
114 	__mmap_lock_trace_acquire_returned(mm, true, true);  in mmap_write_lock_nested()
117 static inline int mmap_write_lock_killable(struct mm_struct *mm)  in mmap_write_lock_killable()  argument
121 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock_killable()
122 	ret = down_write_killable(&mm->mmap_lock);  in mmap_write_lock_killable()
123 	__mmap_lock_trace_acquire_returned(mm, true, ret == 0);  in mmap_write_lock_killable()
127 static inline void mmap_write_unlock(struct mm_struct *mm)  in mmap_write_unlock()  argument
129 	__mmap_lock_trace_released(mm, true);  in mmap_write_unlock()
130 	vma_end_write_all(mm);  in mmap_write_unlock()
131 	up_write(&mm->mmap_lock);  in mmap_write_unlock()
134 static inline void mmap_write_downgrade(struct mm_struct *mm)  in mmap_write_downgrade()  argument
136 	__mmap_lock_trace_acquire_returned(mm, false, true);  in mmap_write_downgrade()
137 	vma_end_write_all(mm);  in mmap_write_downgrade()
138 	downgrade_write(&mm->mmap_lock);  in mmap_write_downgrade()
141 static inline void mmap_read_lock(struct mm_struct *mm)  in mmap_read_lock()  argument
143 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_lock()
144 	down_read(&mm->mmap_lock);  in mmap_read_lock()
145 	__mmap_lock_trace_acquire_returned(mm, false, true);  in mmap_read_lock()
148 static inline int mmap_read_lock_killable(struct mm_struct *mm)  in mmap_read_lock_killable()  argument
152 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_lock_killable()
153 	ret = down_read_killable(&mm->mmap_lock);  in mmap_read_lock_killable()
154 	__mmap_lock_trace_acquire_returned(mm, false, ret == 0);  in mmap_read_lock_killable()
158 static inline bool mmap_read_trylock(struct mm_struct *mm)  in mmap_read_trylock()  argument
162 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_trylock()
163 	ret = down_read_trylock(&mm->mmap_lock) != 0;  in mmap_read_trylock()
164 	__mmap_lock_trace_acquire_returned(mm, false, ret);  in mmap_read_trylock()
168 static inline void mmap_read_unlock(struct mm_struct *mm)  in mmap_read_unlock()  argument
170 	__mmap_lock_trace_released(mm, false);  in mmap_read_unlock()
171 	up_read(&mm->mmap_lock);  in mmap_read_unlock()
174 static inline void mmap_read_unlock_non_owner(struct mm_struct *mm)  in mmap_read_unlock_non_owner()  argument
176 	__mmap_lock_trace_released(mm, false);  in mmap_read_unlock_non_owner()
177 	up_read_non_owner(&mm->mmap_lock);  in mmap_read_unlock_non_owner()
180 static inline int mmap_lock_is_contended(struct mm_struct *mm)  in mmap_lock_is_contended()  argument
182 	return rwsem_is_contended(&mm->mmap_lock);  in mmap_lock_is_contended()