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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
29 lines
979 B
Plaintext
29 lines
979 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config CACHEFILES
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tristate "Filesystem caching on files"
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depends on FSCACHE && BLOCK
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help
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This permits use of a mounted filesystem as a cache for other
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filesystems - primarily networking filesystems - thus allowing fast
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local disk to enhance the speed of slower devices.
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See Documentation/filesystems/caching/cachefiles.rst for more
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information.
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config CACHEFILES_DEBUG
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bool "Debug CacheFiles"
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depends on CACHEFILES
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help
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This permits debugging to be dynamically enabled in the filesystem
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caching on files module. If this is set, the debugging output may be
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enabled by setting bits in /sys/modules/cachefiles/parameter/debug or
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by including a debugging specifier in /etc/cachefilesd.conf.
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config CACHEFILES_ERROR_INJECTION
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bool "Provide error injection for cachefiles"
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depends on CACHEFILES && SYSCTL
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help
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This permits error injection to be enabled in cachefiles whilst a
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cache is in service.
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