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()
75 static inline void mm_lock_seqcount_init(struct mm_struct *mm)  in mm_lock_seqcount_init()  argument
77 	seqcount_init(&mm->mm_lock_seq);  in mm_lock_seqcount_init()
80 static inline void mm_lock_seqcount_begin(struct mm_struct *mm)  in mm_lock_seqcount_begin()  argument
82 	do_raw_write_seqcount_begin(&mm->mm_lock_seq);  in mm_lock_seqcount_begin()
85 static inline void mm_lock_seqcount_end(struct mm_struct *mm)  in mm_lock_seqcount_end()  argument
87 	ASSERT_EXCLUSIVE_WRITER(mm->mm_lock_seq);  in mm_lock_seqcount_end()
88 	do_raw_write_seqcount_end(&mm->mm_lock_seq);  in mm_lock_seqcount_end()
91 static inline bool mmap_lock_speculate_try_begin(struct mm_struct *mm, unsigned int *seq)  in mmap_lock_speculate_try_begin()  argument
99 	return raw_seqcount_try_begin(&mm->mm_lock_seq, *seq);  in mmap_lock_speculate_try_begin()
102 static inline bool mmap_lock_speculate_retry(struct mm_struct *mm, unsigned int seq)  in mmap_lock_speculate_retry()  argument
104 	return read_seqcount_retry(&mm->mm_lock_seq, seq);  in mmap_lock_speculate_retry()
109 static inline void mm_lock_seqcount_init(struct mm_struct *mm) {}  in mm_lock_seqcount_init()  argument
110 static inline void mm_lock_seqcount_begin(struct mm_struct *mm) {}  in mm_lock_seqcount_begin()  argument
111 static inline void mm_lock_seqcount_end(struct mm_struct *mm) {}  in mm_lock_seqcount_end()  argument
113 static inline bool mmap_lock_speculate_try_begin(struct mm_struct *mm, unsigned int *seq)  in mmap_lock_speculate_try_begin()  argument
118 static inline bool mmap_lock_speculate_retry(struct mm_struct *mm, unsigned int seq)  in mmap_lock_speculate_retry()  argument
125 static inline void mmap_init_lock(struct mm_struct *mm)  in mmap_init_lock()  argument
127 	init_rwsem(&mm->mmap_lock);  in mmap_init_lock()
128 	mm_lock_seqcount_init(mm);  in mmap_init_lock()
131 static inline void mmap_write_lock(struct mm_struct *mm)  in mmap_write_lock()  argument
133 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock()
134 	down_write(&mm->mmap_lock);  in mmap_write_lock()
135 	mm_lock_seqcount_begin(mm);  in mmap_write_lock()
136 	__mmap_lock_trace_acquire_returned(mm, true, true);  in mmap_write_lock()
139 static inline void mmap_write_lock_nested(struct mm_struct *mm, int subclass)  in mmap_write_lock_nested()  argument
141 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock_nested()
142 	down_write_nested(&mm->mmap_lock, subclass);  in mmap_write_lock_nested()
143 	mm_lock_seqcount_begin(mm);  in mmap_write_lock_nested()
144 	__mmap_lock_trace_acquire_returned(mm, true, true);  in mmap_write_lock_nested()
147 static inline int mmap_write_lock_killable(struct mm_struct *mm)  in mmap_write_lock_killable()  argument
151 	__mmap_lock_trace_start_locking(mm, true);  in mmap_write_lock_killable()
152 	ret = down_write_killable(&mm->mmap_lock);  in mmap_write_lock_killable()
154 		mm_lock_seqcount_begin(mm);  in mmap_write_lock_killable()
155 	__mmap_lock_trace_acquire_returned(mm, true, ret == 0);  in mmap_write_lock_killable()
167 static inline void vma_end_write_all(struct mm_struct *mm)  in vma_end_write_all()  argument
169 	mmap_assert_write_locked(mm);  in vma_end_write_all()
170 	mm_lock_seqcount_end(mm);  in vma_end_write_all()
173 static inline void mmap_write_unlock(struct mm_struct *mm)  in mmap_write_unlock()  argument
175 	__mmap_lock_trace_released(mm, true);  in mmap_write_unlock()
176 	vma_end_write_all(mm);  in mmap_write_unlock()
177 	up_write(&mm->mmap_lock);  in mmap_write_unlock()
180 static inline void mmap_write_downgrade(struct mm_struct *mm)  in mmap_write_downgrade()  argument
182 	__mmap_lock_trace_acquire_returned(mm, false, true);  in mmap_write_downgrade()
183 	vma_end_write_all(mm);  in mmap_write_downgrade()
184 	downgrade_write(&mm->mmap_lock);  in mmap_write_downgrade()
187 static inline void mmap_read_lock(struct mm_struct *mm)  in mmap_read_lock()  argument
189 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_lock()
190 	down_read(&mm->mmap_lock);  in mmap_read_lock()
191 	__mmap_lock_trace_acquire_returned(mm, false, true);  in mmap_read_lock()
194 static inline int mmap_read_lock_killable(struct mm_struct *mm)  in mmap_read_lock_killable()  argument
198 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_lock_killable()
199 	ret = down_read_killable(&mm->mmap_lock);  in mmap_read_lock_killable()
200 	__mmap_lock_trace_acquire_returned(mm, false, ret == 0);  in mmap_read_lock_killable()
204 static inline bool mmap_read_trylock(struct mm_struct *mm)  in mmap_read_trylock()  argument
208 	__mmap_lock_trace_start_locking(mm, false);  in mmap_read_trylock()
209 	ret = down_read_trylock(&mm->mmap_lock) != 0;  in mmap_read_trylock()
210 	__mmap_lock_trace_acquire_returned(mm, false, ret);  in mmap_read_trylock()
214 static inline void mmap_read_unlock(struct mm_struct *mm)  in mmap_read_unlock()  argument
216 	__mmap_lock_trace_released(mm, false);  in mmap_read_unlock()
217 	up_read(&mm->mmap_lock);  in mmap_read_unlock()
220 static inline void mmap_read_unlock_non_owner(struct mm_struct *mm)  in mmap_read_unlock_non_owner()  argument
222 	__mmap_lock_trace_released(mm, false);  in mmap_read_unlock_non_owner()
223 	up_read_non_owner(&mm->mmap_lock);  in mmap_read_unlock_non_owner()
226 static inline int mmap_lock_is_contended(struct mm_struct *mm)  in mmap_lock_is_contended()  argument
228 	return rwsem_is_contended(&mm->mmap_lock);  in mmap_lock_is_contended()