162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciconfig BCACHE 462306a36Sopenharmony_ci tristate "Block device as cache" 562306a36Sopenharmony_ci select BLOCK_HOLDER_DEPRECATED if SYSFS 662306a36Sopenharmony_ci select CRC64 762306a36Sopenharmony_ci help 862306a36Sopenharmony_ci Allows a block device to be used as cache for other devices; uses 962306a36Sopenharmony_ci a btree for indexing and the layout is optimized for SSDs. 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci See Documentation/admin-guide/bcache.rst for details. 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ciconfig BCACHE_DEBUG 1462306a36Sopenharmony_ci bool "Bcache debugging" 1562306a36Sopenharmony_ci depends on BCACHE 1662306a36Sopenharmony_ci help 1762306a36Sopenharmony_ci Don't select this option unless you're a developer 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci Enables extra debugging tools, allows expensive runtime checks to be 2062306a36Sopenharmony_ci turned on. 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ciconfig BCACHE_CLOSURES_DEBUG 2362306a36Sopenharmony_ci bool "Debug closures" 2462306a36Sopenharmony_ci depends on BCACHE 2562306a36Sopenharmony_ci select DEBUG_FS 2662306a36Sopenharmony_ci help 2762306a36Sopenharmony_ci Keeps all active closures in a linked list and provides a debugfs 2862306a36Sopenharmony_ci interface to list them, which makes it possible to see asynchronous 2962306a36Sopenharmony_ci operations that get stuck. 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ciconfig BCACHE_ASYNC_REGISTRATION 3262306a36Sopenharmony_ci bool "Asynchronous device registration" 3362306a36Sopenharmony_ci depends on BCACHE 3462306a36Sopenharmony_ci help 3562306a36Sopenharmony_ci Add a sysfs file /sys/fs/bcache/register_async. Writing registering 3662306a36Sopenharmony_ci device path into this file will returns immediately and the real 3762306a36Sopenharmony_ci registration work is handled in kernel work queue in asynchronous 3862306a36Sopenharmony_ci way. 39