257 static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds);
259 static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds);
283 		struct btrfsic_dev_state *ds,
285 static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds);
457 static void btrfsic_dev_state_init(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_init()  argument
459 	ds->magic_num = BTRFSIC_DEV2STATE_MAGIC_NUMBER;  in btrfsic_dev_state_init()
460 	ds->bdev = NULL;  in btrfsic_dev_state_init()
461 	ds->state = NULL;  in btrfsic_dev_state_init()
462 	ds->name[0] = '\0';  in btrfsic_dev_state_init()
463 	INIT_LIST_HEAD(&ds->collision_resolving_node);  in btrfsic_dev_state_init()
464 	ds->last_flush_gen = 0;  in btrfsic_dev_state_init()
465 	btrfsic_block_init(&ds->dummy_block_for_bio_bh_flush);  in btrfsic_dev_state_init()
466 	ds->dummy_block_for_bio_bh_flush.is_iodone = 1;  in btrfsic_dev_state_init()
467 	ds->dummy_block_for_bio_bh_flush.dev_state = ds;  in btrfsic_dev_state_init()
472 	struct btrfsic_dev_state *ds;  in btrfsic_dev_state_alloc()  local
474 	ds = kzalloc(sizeof(*ds), GFP_NOFS);  in btrfsic_dev_state_alloc()
475 	if (NULL != ds)  in btrfsic_dev_state_alloc()
476 		btrfsic_dev_state_init(ds);  in btrfsic_dev_state_alloc()
478 	return ds;  in btrfsic_dev_state_alloc()
481 static void btrfsic_dev_state_free(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_free()  argument
483 	BUG_ON(!(NULL == ds ||  in btrfsic_dev_state_free()
484 		 BTRFSIC_DEV2STATE_MAGIC_NUMBER == ds->magic_num));  in btrfsic_dev_state_free()
485 	kfree(ds);  in btrfsic_dev_state_free()
599 		struct btrfsic_dev_state *ds,  in btrfsic_dev_state_hashtable_add()  argument
603 	    (((unsigned int)((uintptr_t)ds->bdev->bd_dev)) &  in btrfsic_dev_state_hashtable_add()
606 	list_add(&ds->collision_resolving_node, h->table + hashval);  in btrfsic_dev_state_hashtable_add()
609 static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds)  in btrfsic_dev_state_hashtable_remove()  argument
611 	list_del(&ds->collision_resolving_node);  in btrfsic_dev_state_hashtable_remove()
619 	struct btrfsic_dev_state *ds;  in btrfsic_dev_state_hashtable_lookup()  local
621 	list_for_each_entry(ds, h->table + hashval, collision_resolving_node) {  in btrfsic_dev_state_hashtable_lookup()
622 		if (ds->bdev->bd_dev == dev)  in btrfsic_dev_state_hashtable_lookup()
623 			return ds;  in btrfsic_dev_state_hashtable_lookup()
2929 		struct btrfsic_dev_state *ds;  in btrfsic_mount()  local
2935 		ds = btrfsic_dev_state_alloc();  in btrfsic_mount()
2936 		if (NULL == ds) {  in btrfsic_mount()
2941 		ds->bdev = device->bdev;  in btrfsic_mount()
2942 		ds->state = state;  in btrfsic_mount()
2943 		bdevname(ds->bdev, ds->name);  in btrfsic_mount()
2944 		ds->name[BDEVNAME_SIZE - 1] = '\0';  in btrfsic_mount()
2945 		p = kbasename(ds->name);  in btrfsic_mount()
2946 		strlcpy(ds->name, p, sizeof(ds->name));  in btrfsic_mount()
2947 		btrfsic_dev_state_hashtable_add(ds,  in btrfsic_mount()
2981 		struct btrfsic_dev_state *ds;  in btrfsic_unmount()  local
2986 		ds = btrfsic_dev_state_hashtable_lookup(  in btrfsic_unmount()
2989 		if (NULL != ds) {  in btrfsic_unmount()
2990 			state = ds->state;  in btrfsic_unmount()
2991 			btrfsic_dev_state_hashtable_remove(ds);  in btrfsic_unmount()
2992 			btrfsic_dev_state_free(ds);  in btrfsic_unmount()