1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2cafe5635SKent Overstreet 3cafe5635SKent Overstreetconfig BCACHE 4cafe5635SKent Overstreet tristate "Block device as cache" 5c66fd019SChristoph Hellwig select BLOCK_HOLDER_DEPRECATED if SYSFS 6d2359963SColy Li select CRC64 7bc81b47eSColy Li help 8cafe5635SKent Overstreet Allows a block device to be used as cache for other devices; uses 9cafe5635SKent Overstreet a btree for indexing and the layout is optimized for SSDs. 10cafe5635SKent Overstreet 115fb94e9cSMauro Carvalho Chehab See Documentation/admin-guide/bcache.rst for details. 12cafe5635SKent Overstreet 13cafe5635SKent Overstreetconfig BCACHE_DEBUG 14cafe5635SKent Overstreet bool "Bcache debugging" 15cafe5635SKent Overstreet depends on BCACHE 16bc81b47eSColy Li help 17cafe5635SKent Overstreet Don't select this option unless you're a developer 18cafe5635SKent Overstreet 19280481d0SKent Overstreet Enables extra debugging tools, allows expensive runtime checks to be 20280481d0SKent Overstreet turned on. 21cafe5635SKent Overstreet 22cafe5635SKent Overstreetconfig BCACHE_CLOSURES_DEBUG 23cafe5635SKent Overstreet bool "Debug closures" 24cafe5635SKent Overstreet depends on BCACHE 25cafe5635SKent Overstreet select DEBUG_FS 26bc81b47eSColy Li help 27cafe5635SKent Overstreet Keeps all active closures in a linked list and provides a debugfs 28cafe5635SKent Overstreet interface to list them, which makes it possible to see asynchronous 29cafe5635SKent Overstreet operations that get stuck. 300c8d3fceSColy Li 316acd193bSJean Delvareconfig BCACHE_ASYNC_REGISTRATION 32*640c46a2SColy Li bool "Asynchronous device registration" 330c8d3fceSColy Li depends on BCACHE 340c8d3fceSColy Li help 350c8d3fceSColy Li Add a sysfs file /sys/fs/bcache/register_async. Writing registering 360c8d3fceSColy Li device path into this file will returns immediately and the real 370c8d3fceSColy Li registration work is handled in kernel work queue in asynchronous 380c8d3fceSColy Li way. 39