1 # SPDX-License-Identifier: GPL-2.0-only
2 
3 config BCACHE
4 	tristate "Block device as cache"
5 	select BLOCK_HOLDER_DEPRECATED if SYSFS
6 	select CRC64
7 	help
8 	Allows a block device to be used as cache for other devices; uses
9 	a btree for indexing and the layout is optimized for SSDs.
10 
11 	See Documentation/admin-guide/bcache.rst for details.
12 
13 config BCACHE_DEBUG
14 	bool "Bcache debugging"
15 	depends on BCACHE
16 	help
17 	Don't select this option unless you're a developer
18 
19 	Enables extra debugging tools, allows expensive runtime checks to be
20 	turned on.
21 
22 config BCACHE_CLOSURES_DEBUG
23 	bool "Debug closures"
24 	depends on BCACHE
25 	select DEBUG_FS
26 	help
27 	Keeps all active closures in a linked list and provides a debugfs
28 	interface to list them, which makes it possible to see asynchronous
29 	operations that get stuck.
30 
31 config BCACHE_ASYNC_REGISTRATION
32 	bool "Asynchronous device registration"
33 	depends on BCACHE
34 	help
35 	Add a sysfs file /sys/fs/bcache/register_async. Writing registering
36 	device path into this file will returns immediately and the real
37 	registration work is handled in kernel work queue in asynchronous
38 	way.
39