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dm delay: document that offsets are specified in sectors

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Only delay params are mentioned in delay.txt.
Mention offsets just like documents for linear and flakey do.

Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Tomohiro Kusumi 2015-10-28 04:38:56 +09:00 committed by Mike Snitzer
parent e213f33e4d
commit f49e869a61
2 changed files with 2 additions and 0 deletions
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1
Documentation/device-mapper/delay.txt
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@ -8,6 +8,7 @@ Parameters:
<device> <offset> <delay> [<write_device> <write_offset> <write_delay>] <device> <offset> <delay> [<write_device> <write_offset> <write_delay>]
With separate write parameters, the first set is only used for reads. With separate write parameters, the first set is only used for reads.
Offsets are specified in sectors.
Delays are specified in milliseconds. Delays are specified in milliseconds.
Example scripts Example scripts

1
drivers/md/dm-delay.c
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@ -122,6 +122,7 @@ static void flush_expired_bios(struct work_struct *work)
* <device> <offset> <delay> [<write_device> <write_offset> <write_delay>] * <device> <offset> <delay> [<write_device> <write_offset> <write_delay>]
* *
* With separate write parameters, the first set is only used for reads. * With separate write parameters, the first set is only used for reads.
* Offsets are specified in sectors.
* Delays are specified in milliseconds. * Delays are specified in milliseconds.
*/ */
static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv) static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv)