# SPDX-License-Identifier: GPL-2.0-only config BCACHE tristate "Block device as cache" select CRC64 help Allows a block device to be used as cache for other devices; uses a btree for indexing and the layout is optimized for SSDs. See Documentation/admin-guide/bcache.rst for details. config BCACHE_DEBUG bool "Bcache debugging" depends on BCACHE help Don't select this option unless you're a developer Enables extra debugging tools, allows expensive runtime checks to be turned on. config BCACHE_CLOSURES_DEBUG bool "Debug closures" depends on BCACHE select DEBUG_FS help Keeps all active closures in a linked list and provides a debugfs interface to list them, which makes it possible to see asynchronous operations that get stuck.