21 static unsigned long __count_nat_entries(struct f2fs_sb_info *sbi)  in __count_nat_entries()  argument
23 	return NM_I(sbi)->nat_cnt - NM_I(sbi)->dirty_nat_cnt;  in __count_nat_entries()
26 static unsigned long __count_free_nids(struct f2fs_sb_info *sbi)  in __count_free_nids()  argument
28 	if (NM_I(sbi)->fcnt > NAT_ENTRY_PER_BLOCK)  in __count_free_nids()
29 		return NM_I(sbi)->fcnt - NAT_ENTRY_PER_BLOCK;  in __count_free_nids()
33 static unsigned long __count_extent_cache(struct f2fs_sb_info *sbi)  in __count_extent_cache()  argument
35 	return sbi->total_ext_tree + atomic_read(&sbi->total_ext_node);  in __count_extent_cache()
41 	struct f2fs_sb_info *sbi;  in f2fs_shrink_count()  local
48 		sbi = list_entry(p, struct f2fs_sb_info, s_list);  in f2fs_shrink_count()
51 		if (!mutex_trylock(&sbi->umount_mutex)) {  in f2fs_shrink_count()
58 		count += __count_extent_cache(sbi);  in f2fs_shrink_count()
61 		count += __count_nat_entries(sbi);  in f2fs_shrink_count()
64 		count += __count_free_nids(sbi);  in f2fs_shrink_count()
68 		mutex_unlock(&sbi->umount_mutex);  in f2fs_shrink_count()
78 	struct f2fs_sb_info *sbi;  in f2fs_shrink_scan()  local
89 		sbi = list_entry(p, struct f2fs_sb_info, s_list);  in f2fs_shrink_scan()
91 		if (sbi->shrinker_run_no == run_no)  in f2fs_shrink_scan()
95 		if (!mutex_trylock(&sbi->umount_mutex)) {  in f2fs_shrink_scan()
101 		sbi->shrinker_run_no = run_no;  in f2fs_shrink_scan()
104 		freed += f2fs_shrink_extent_tree(sbi, nr >> 1);  in f2fs_shrink_scan()
108 			freed += try_to_free_nats(sbi, nr - freed);  in f2fs_shrink_scan()
112 			freed += try_to_free_nids(sbi, nr - freed);  in f2fs_shrink_scan()
116 		list_move_tail(&sbi->s_list, &f2fs_list);  in f2fs_shrink_scan()
117 		mutex_unlock(&sbi->umount_mutex);  in f2fs_shrink_scan()
125 void f2fs_join_shrinker(struct f2fs_sb_info *sbi)  in f2fs_join_shrinker()  argument
128 	list_add_tail(&sbi->s_list, &f2fs_list);  in f2fs_join_shrinker()
132 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi)  in f2fs_leave_shrinker()  argument
134 	f2fs_shrink_extent_tree(sbi, __count_extent_cache(sbi));  in f2fs_leave_shrinker()
137 	list_del(&sbi->s_list);  in f2fs_leave_shrinker()