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f2fs: sysfs: introduce inject_lock_timeout

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This patch adds a new sysfs node in /sys/fs/f2fs/<disk>/inject_lock_timeout,
it relies on CONFIG_F2FS_FAULT_INJECTION kernel config.

It can be used to simulate different type of timeout in lock duration.

==========     ===============================
Flag_Value     Flag_Description
==========     ===============================
0x00000000     No timeout (default)
0x00000001     Simulate running time
0x00000002     Simulate IO type sleep time
0x00000003     Simulate Non-IO type sleep time
0x00000004     Simulate runnable time
==========     ===============================

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2026-01-04 10:07:29 +08:00 • committed by Jaegeuk Kim
commit d36de29f4b
6 changed files with 93 additions and 5 deletions
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