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authorDavid Teigland <teigland@redhat.com>2006-01-06 00:20:01 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:34:00 -0800
commitd229a9589ff3b988d3f999cdcfa350f97a372673 (patch)
treeea6da350027f02736de7c1b7f350bc915abae39c /drivers/md/dm.c
parent637842cfdbe2b981f7088f7633e630570f58efaf (diff)
[PATCH] device-mapper: add dm_get_md
Add dm_get_dev() to get a mapped device given its dev_t. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 27cd234cf682..9e8c1edd89dd 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -921,6 +921,16 @@ static struct mapped_device *dm_find_md(dev_t dev)
return md;
}
+struct mapped_device *dm_get_md(dev_t dev)
+{
+ struct mapped_device *md = dm_find_md(dev);
+
+ if (md)
+ dm_get(md);
+
+ return md;
+}
+
void *dm_get_mdptr(dev_t dev)
{
struct mapped_device *md;