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-rw-r--r--fs/f2fs/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig
index f46a7339d6cf..03ef087537c7 100644
--- a/fs/f2fs/Kconfig
+++ b/fs/f2fs/Kconfig
@@ -143,3 +143,10 @@ config F2FS_IOSTAT
Support getting IO statistics through sysfs and printing out periodic
IO statistics tracepoint events. You have to turn on "iostat_enable"
sysfs node to enable this feature.
+
+config F2FS_UNFAIR_RWSEM
+ bool "F2FS unfair rw_semaphore"
+ depends on F2FS_FS && BLK_CGROUP
+ help
+ Use unfair rw_semaphore, if system configured IO priority by block
+ cgroup.