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[dm-devel] [PATCH 03/14] dm_thin: dm_sm_root_size() was being called for the wrong space-map

Fix a harmless typo.

The root is a chunk of data that gets written to the superblock.  This
data is used to recreate the space map when opening a metadata area.
We have two space maps; one tracking space on the metadata device and
one of the data device.  Both of these use the same format for their
root, so this typo was harmless.

Signed-off-by: Joe Thornber <ejt redhat com>
Signed-off-by: Mike Snitzer <snitzer redhat com>
 drivers/md/dm-thin-metadata.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 237571a..a680c76 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -614,7 +614,7 @@ static int __commit_transaction(struct dm_pool_metadata *pmd)
 	if (r < 0)
 		goto out;
-	r = dm_sm_root_size(pmd->metadata_sm, &data_len);
+	r = dm_sm_root_size(pmd->data_sm, &data_len);
 	if (r < 0)
 		goto out;

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