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| author | David Howells <dhowells@redhat.com> | 2021-10-21 08:15:26 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-07 13:40:56 +0000 |
| commit | a70f6526267e9f5fbf958a69c6112938b0b14bc4 (patch) | |
| tree | b795158ca0ec0b87b96a84efeaf8160baec8d30a /fs/cachefiles/Kconfig | |
| parent | 8390fbc46570dca6f1c7b170f19c612f9ec91a92 (diff) | |
| download | linux-a70f6526267e9f5fbf958a69c6112938b0b14bc4.tar.bz2 | |
cachefiles: Add some error injection support
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
Diffstat (limited to 'fs/cachefiles/Kconfig')
| -rw-r--r-- | fs/cachefiles/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/cachefiles/Kconfig b/fs/cachefiles/Kconfig index 6827b40f7ddc..719faeeda168 100644 --- a/fs/cachefiles/Kconfig +++ b/fs/cachefiles/Kconfig @@ -19,3 +19,10 @@ config CACHEFILES_DEBUG 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. |