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Default discard granularity is 16. For small devices, default value is 1. Signed-off-by: Yangtao Li Reviewed-by: Chao Yu --- Documentation/ABI/testing/sysfs-fs-f2fs | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 24e7cb77f265..32404781e76f 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -138,7 +138,8 @@ Contact: "Chao Yu" Description: Controls discard granularity of inner discard thread. Inner thread will not issue discards with size that is smaller than granularity. The unit size is one block(4KB), now only support configuring - in range of [1, 512]. Default value is 4(=16KB). + in range of [1, 512]. Default value is 16. + For small devices, default value is 1. What: /sys/fs/f2fs//umount_discard_timeout Date: January 2019