1# SPDX-License-Identifier: GPL-2.0-only 2 3config 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 13config 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 22config 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 31config BCACHE_ASYNC_REGISTRATION 32 bool "Asynchronous device registration (EXPERIMENTAL)" 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