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Commit 64dbce58 authored by Kiyoshi Ueda's avatar Kiyoshi Ueda Committed by Alasdair G Kergon
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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: default avatarKiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: default avatarJun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 4f186f8b

drivers/md/dm.c

+11 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/device-mapper.h

+1 −0
Original line number Diff line number Diff line
@@ -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);