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path: root/drivers/md/dm-delay.c
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Diffstat (limited to 'drivers/md/dm-delay.c')
-rw-r--r--drivers/md/dm-delay.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index b34f6e27293d..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)
@@ -132,7 +133,7 @@ static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv)
int ret;
if (argc != 3 && argc != 6) {
- ti->error = "requires exactly 3 or 6 arguments";
+ ti->error = "Requires exactly 3 or 6 arguments";
return -EINVAL;
}
@@ -237,7 +238,7 @@ static int delay_bio(struct delay_c *dc, int delay, struct bio *bio)
unsigned long expires = 0;
if (!delay || !atomic_read(&dc->may_delay))
- return 1;
+ return DM_MAPIO_REMAPPED;
delayed = dm_per_bio_data(bio, sizeof(struct dm_delay_info));
@@ -257,7 +258,7 @@ static int delay_bio(struct delay_c *dc, int delay, struct bio *bio)
queue_timeout(dc, expires);
- return 0;
+ return DM_MAPIO_SUBMITTED;
}
static void delay_presuspend(struct dm_target *ti)