| commit | fdb9572b73abd008b80931c3b1f157dac3888bb9 | |
| author | Mikulas Patocka <mpatocka@redhat.com> | |
| Mon, 22 Jun 2009 09:12:19 +0000 (22 10:12 +0100) | ||
| committer | Alasdair G Kergon <agk@redhat.com> | |
| Mon, 22 Jun 2009 09:12:19 +0000 (22 10:12 +0100) | ||
| tree | ae84d6ed1c97e77d536d0bcf2e25fa35d5cbfcba | treesnapshot (tar.gz zip) |
| parent | 5aa2781d964e9835c441932110484bc454b5c207 | commitdiff |
dm: remove EOPNOTSUPP for barriers
If the underlying device doesn't support barriers and dm receives a
barrier, it waits until all requests on that device drain so it no
longer needs to report -EOPNOTSUPP to the caller.
This patch deals with the confusing situation when moving a volume from
one physical device to another triggers an EOPNOTSUPP on a volume that
didn't report it before.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
If the underlying device doesn't support barriers and dm receives a
barrier, it waits until all requests on that device drain so it no
longer needs to report -EOPNOTSUPP to the caller.
This patch deals with the confusing situation when moving a volume from
one physical device to another triggers an EOPNOTSUPP on a volume that
didn't report it before.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| drivers/md/dm.c | diffblobblamehistory |