mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 06:33:07 +00:00
a70f652626
Add support for injecting ENOSPC or EIO errors. This needs to be enabled
by CONFIG_CACHEFILES_ERROR_INJECTION=y. Once enabled, ENOSPC on things
like write and mkdir can be triggered by:
echo 1 >/proc/sys/cachefiles/error_injection
and EIO can be triggered on most operations by:
echo 2 >/proc/sys/cachefiles/error_injection
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819624706.215744.6911916249119962943.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906925343.143852.5465695512984025812.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967134412.1823006.7354285948280296595.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021532340.640689.18209494225772443698.stgit@warthog.procyon.org.uk/ # v4
28 lines
979 B
Text
28 lines
979 B
Text
# SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
config CACHEFILES
|
|
tristate "Filesystem caching on files"
|
|
depends on FSCACHE && BLOCK
|
|
help
|
|
This permits use of a mounted filesystem as a cache for other
|
|
filesystems - primarily networking filesystems - thus allowing fast
|
|
local disk to enhance the speed of slower devices.
|
|
|
|
See Documentation/filesystems/caching/cachefiles.rst for more
|
|
information.
|
|
|
|
config CACHEFILES_DEBUG
|
|
bool "Debug CacheFiles"
|
|
depends on CACHEFILES
|
|
help
|
|
This permits debugging to be dynamically enabled in the filesystem
|
|
caching on files module. If this is set, the debugging output may be
|
|
enabled by setting bits in /sys/modules/cachefiles/parameter/debug or
|
|
by including a debugging specifier in /etc/cachefilesd.conf.
|
|
|
|
config CACHEFILES_ERROR_INJECTION
|
|
bool "Provide error injection for cachefiles"
|
|
depends on CACHEFILES && SYSCTL
|
|
help
|
|
This permits error injection to be enabled in cachefiles whilst a
|
|
cache is in service.
|