diff options
| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2009-12-10 23:52:27 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-12-10 23:52:27 +0000 |
| commit | 64dbce580d5a7e89e8de20b91f80c7267cdad91d (patch) | |
| tree | 9d8a8bb8afd9d7b856d90abd7c5c35137547d09a | |
| parent | 4f186f8bbfa92bf1a2b39f7a8674348bfdba9437 (diff) | |
dm: export suspended state to targets
This patch adds the exported dm_suspended() function so that targets
can check whether or not they are suspended.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| -rw-r--r-- | drivers/md/dm.c | 11 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index e0702bf3793..3167480b532 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2684,6 +2684,17 @@ int dm_suspended_md(struct mapped_device *md) return test_bit(DMF_SUSPENDED, &md->flags); } +int dm_suspended(struct dm_target *ti) +{ + struct mapped_device *md = dm_table_get_md(ti->table); + int r = dm_suspended_md(md); + + dm_put(md); + + return r; +} +EXPORT_SYMBOL_GPL(dm_suspended); + int dm_noflush_suspending(struct dm_target *ti) { struct mapped_device *md = dm_table_get_md(ti->table); diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index fca0d31bbf2..d4c9c0b88ad 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -235,6 +235,7 @@ void dm_uevent_add(struct mapped_device *md, struct list_head *elist); const char *dm_device_name(struct mapped_device *md); int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid); struct gendisk *dm_disk(struct mapped_device *md); +int dm_suspended(struct dm_target *ti); int dm_noflush_suspending(struct dm_target *ti); union map_info *dm_get_mapinfo(struct bio *bio); union map_info *dm_get_rq_mapinfo(struct request *rq); |