31 static inline int fat_max_cache(struct inode *inode)  in fat_max_cache()  argument
61 static inline struct fat_cache *fat_cache_alloc(struct inode *inode)  in fat_cache_alloc()  argument
72 static inline void fat_cache_update_lru(struct inode *inode,  in fat_cache_update_lru()  argument
75 	if (MSDOS_I(inode)->cache_lru.next != &cache->cache_list)  in fat_cache_update_lru()
76 		list_move(&cache->cache_list, &MSDOS_I(inode)->cache_lru);  in fat_cache_update_lru()
79 static int fat_cache_lookup(struct inode *inode, int fclus,  in fat_cache_lookup()  argument
88 	spin_lock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_lookup()
89 	list_for_each_entry(p, &MSDOS_I(inode)->cache_lru, cache_list) {  in fat_cache_lookup()
102 		fat_cache_update_lru(inode, hit);  in fat_cache_lookup()
104 		cid->id = MSDOS_I(inode)->cache_valid_id;  in fat_cache_lookup()
111 	spin_unlock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_lookup()
116 static struct fat_cache *fat_cache_merge(struct inode *inode,  in fat_cache_merge()  argument
121 	list_for_each_entry(p, &MSDOS_I(inode)->cache_lru, cache_list) {  in fat_cache_merge()
133 static void fat_cache_add(struct inode *inode, struct fat_cache_id *new)  in fat_cache_add()  argument
140 	spin_lock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
142 	    new->id != MSDOS_I(inode)->cache_valid_id)  in fat_cache_add()
145 	cache = fat_cache_merge(inode, new);  in fat_cache_add()
147 		if (MSDOS_I(inode)->nr_caches < fat_max_cache(inode)) {  in fat_cache_add()
148 			MSDOS_I(inode)->nr_caches++;  in fat_cache_add()
149 			spin_unlock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
151 			tmp = fat_cache_alloc(inode);  in fat_cache_add()
153 				spin_lock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
154 				MSDOS_I(inode)->nr_caches--;  in fat_cache_add()
155 				spin_unlock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
159 			spin_lock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
160 			cache = fat_cache_merge(inode, new);  in fat_cache_add()
162 				MSDOS_I(inode)->nr_caches--;  in fat_cache_add()
168 			struct list_head *p = MSDOS_I(inode)->cache_lru.prev;  in fat_cache_add()
176 	fat_cache_update_lru(inode, cache);  in fat_cache_add()
178 	spin_unlock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_add()
185 static void __fat_cache_inval_inode(struct inode *inode)  in __fat_cache_inval_inode()  argument
187 	struct msdos_inode_info *i = MSDOS_I(inode);  in __fat_cache_inval_inode()
203 void fat_cache_inval_inode(struct inode *inode)  in fat_cache_inval_inode()  argument
205 	spin_lock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_inval_inode()
206 	__fat_cache_inval_inode(inode);  in fat_cache_inval_inode()
207 	spin_unlock(&MSDOS_I(inode)->cache_lru_lock);  in fat_cache_inval_inode()
224 int fat_get_cluster(struct inode *inode, int cluster, int *fclus, int *dclus)  in fat_get_cluster()  argument
226 	struct super_block *sb = inode->i_sb;  in fat_get_cluster()
232 	BUG_ON(MSDOS_I(inode)->i_start == 0);  in fat_get_cluster()
235 	*dclus = MSDOS_I(inode)->i_start;  in fat_get_cluster()
239 	if (fat_cache_lookup(inode, cluster, &cid, fclus, dclus) < 0) {  in fat_get_cluster()
254 					MSDOS_I(inode)->i_pos);  in fat_get_cluster()
259 		nr = fat_ent_read(inode, &fatent, *dclus);  in fat_get_cluster()
266 				       MSDOS_I(inode)->i_pos);  in fat_get_cluster()
270 			fat_cache_add(inode, &cid);  in fat_get_cluster()
279 	fat_cache_add(inode, &cid);  in fat_get_cluster()
285 static int fat_bmap_cluster(struct inode *inode, int cluster)  in fat_bmap_cluster()  argument
287 	struct super_block *sb = inode->i_sb;  in fat_bmap_cluster()
290 	if (MSDOS_I(inode)->i_start == 0)  in fat_bmap_cluster()
293 	ret = fat_get_cluster(inode, cluster, &fclus, &dclus);  in fat_bmap_cluster()
298 			     __func__, MSDOS_I(inode)->i_pos);  in fat_bmap_cluster()
304 int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,  in fat_bmap()  argument
307 	struct super_block *sb = inode->i_sb;  in fat_bmap()
316 	if ((sbi->fat_bits != 32) && (inode->i_ino == MSDOS_ROOT_INO)) {  in fat_bmap()
324 	last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits;  in fat_bmap()
333 		last_block = (MSDOS_I(inode)->mmu_private + (blocksize - 1))  in fat_bmap()
341 	cluster = fat_bmap_cluster(inode, cluster);  in fat_bmap()