268 static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds);
270 static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds);
294 		struct btrfsic_dev_state *ds,
296 static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds);
470 static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_init()  argument
472 	ds->magic_num = BTRFSIC_DEV2STATE_MAGIC_NUMBER;  in btrfsic_dev_state_init()
473 	ds->bdev = NULL;  in btrfsic_dev_state_init()
474 	ds->state = NULL;  in btrfsic_dev_state_init()
475 	ds->name[0] = '\0';  in btrfsic_dev_state_init()
476 	INIT_LIST_HEAD(&ds->collision_resolving_node);  in btrfsic_dev_state_init()
477 	ds->last_flush_gen = 0;  in btrfsic_dev_state_init()
478 	btrfsic_block_init(&ds->dummy_block_for_bio_bh_flush);  in btrfsic_dev_state_init()
479 	ds->dummy_block_for_bio_bh_flush.is_iodone = 1;  in btrfsic_dev_state_init()
480 	ds->dummy_block_for_bio_bh_flush.dev_state = ds;  in btrfsic_dev_state_init()
485 	struct btrfsic_dev_state *ds;  in btrfsic_dev_state_alloc()  local
487 	ds = kzalloc(sizeof(*ds), GFP_NOFS);  in btrfsic_dev_state_alloc()
488 	if (NULL != ds)  in btrfsic_dev_state_alloc()
489 		btrfsic_dev_state_init(ds);  in btrfsic_dev_state_alloc()
491 	return ds;  in btrfsic_dev_state_alloc()
494 static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_free()  argument
496 	BUG_ON(!(NULL == ds ||  in btrfsic_dev_state_free()
497 		 BTRFSIC_DEV2STATE_MAGIC_NUMBER == ds->magic_num));  in btrfsic_dev_state_free()
498 	kfree(ds);  in btrfsic_dev_state_free()
620 		struct btrfsic_dev_state *ds,  in btrfsic_dev_state_hashtable_add()  argument
624 	    (((unsigned int)((uintptr_t)ds->bdev)) &  in btrfsic_dev_state_hashtable_add()
627 	list_add(&ds->collision_resolving_node, h->table + hashval);  in btrfsic_dev_state_hashtable_add()
630 static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_hashtable_remove()  argument
632 	list_del(&ds->collision_resolving_node);  in btrfsic_dev_state_hashtable_remove()
645 		struct btrfsic_dev_state *const ds =  in btrfsic_dev_state_hashtable_lookup()  local
649 		if (ds->bdev == bdev)  in btrfsic_dev_state_hashtable_lookup()
650 			return ds;  in btrfsic_dev_state_hashtable_lookup()
2893 	struct btrfsic_dev_state *ds;  in btrfsic_dev_state_lookup()  local
2895 	ds = btrfsic_dev_state_hashtable_lookup(bdev,  in btrfsic_dev_state_lookup()
2897 	return ds;  in btrfsic_dev_state_lookup()
3122 		struct btrfsic_dev_state *ds;  in btrfsic_mount()  local
3128 		ds = btrfsic_dev_state_alloc();  in btrfsic_mount()
3129 		if (NULL == ds) {  in btrfsic_mount()
3135 		ds->bdev = device->bdev;  in btrfsic_mount()
3136 		ds->state = state;  in btrfsic_mount()
3137 		bdevname(ds->bdev, ds->name);  in btrfsic_mount()
3138 		ds->name[BDEVNAME_SIZE - 1] = '\0';  in btrfsic_mount()
3139 		for (p = ds->name; *p != '\0'; p++);  in btrfsic_mount()
3140 		while (p > ds->name && *p != '/')  in btrfsic_mount()
3144 		strlcpy(ds->name, p, sizeof(ds->name));  in btrfsic_mount()
3145 		btrfsic_dev_state_hashtable_add(ds,  in btrfsic_mount()
3181 		struct btrfsic_dev_state *ds;  in btrfsic_unmount()  local
3186 		ds = btrfsic_dev_state_hashtable_lookup(  in btrfsic_unmount()
3189 		if (NULL != ds) {  in btrfsic_unmount()
3190 			state = ds->state;  in btrfsic_unmount()
3191 			btrfsic_dev_state_hashtable_remove(ds);  in btrfsic_unmount()
3192 			btrfsic_dev_state_free(ds);  in btrfsic_unmount()