linux_dsm_epyc7002/drivers/md/bcache/Kconfig
Coly Li 0c8d3fcead bcache: configure the asynchronous registertion to be experimental
In order to avoid the experimental async registration interface to
be treated as new kernel ABI for common users, this patch makes it
as an experimental kernel configure BCACHE_ASYNC_REGISTRAION.

This interface is for extreme large cached data situation, to make sure
the bcache device can always created without the udev timeout issue. For
normal users the async or sync registration does not make difference.

In future when we decide to use the asynchronous registration as default
behavior, this experimental interface may be removed.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-27 05:19:36 -06:00

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# 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.
config BCACHE_ASYNC_REGISTRAION
bool "Asynchronous device registration (EXPERIMENTAL)"
depends on BCACHE
help
Add a sysfs file /sys/fs/bcache/register_async. Writing registering
device path into this file will returns immediately and the real
registration work is handled in kernel work queue in asynchronous
way.