This patch adds the exported dm_suspended() function so that targets
can check whether themselves are suspended or not.
Signed-off-by: Kiyoshi Ueda <k-ueda@xxxxxxxxxxxxx>
Signed-off-by: Jun'ichi Nomura <j-nomura@xxxxxxxxxxxxx>
Cc: Mike Anderson <andmike@xxxxxxxxxxxxxxxxxx>
Cc: Alasdair G Kergon <agk@xxxxxxxxxx>
---
drivers/md/dm.c | 11 +++++++++++
include/linux/device-mapper.h | 1 +
2 files changed, 12 insertions(+)
Index: 2.6.32-rc7/drivers/md/dm.c
===================================================================
--- 2.6.32-rc7.orig/drivers/md/dm.c
+++ 2.6.32-rc7/drivers/md/dm.c
@@ -2676,6 +2676,17 @@ int dm_suspended_md(struct mapped_device
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);
Index: 2.6.32-rc7/include/linux/device-mapper.h
===================================================================
--- 2.6.32-rc7.orig/include/linux/device-mapper.h
+++ 2.6.32-rc7/include/linux/device-mapper.h
@@ -235,6 +235,7 @@ void dm_uevent_add(struct mapped_device
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);
--
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