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-rw-r--r--drivers/md/dm-delay.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 9a4362d53508..b4c356a21123 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -122,6 +122,7 @@ static void flush_expired_bios(struct work_struct *work)
* <device> <offset> <delay> [<write_device> <write_offset> <write_delay>]
*
* With separate write parameters, the first set is only used for reads.
+ * Offsets are specified in sectors.
* Delays are specified in milliseconds.
*/
static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv)