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dm thin metadata: delete btrees when releasing metadata snapshot

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The device details and mapping trees were just being decremented
before.  Now btree_del() is called to do a deep delete.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Joe Thornber 2015-08-12 15:10:21 +01:00 committed by Mike Snitzer
parent f7644cbfcd
commit 7f518ad0a2
1 changed files with 2 additions and 2 deletions
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4
drivers/md/dm-thin-metadata.c
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@ -1293,8 +1293,8 @@ static int __release_metadata_snap(struct dm_pool_metadata *pmd)
return r;
disk_super = dm_block_data(copy);
dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->data_mapping_root));
dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->device_details_root));
dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root));
dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root));
dm_sm_dec_block(pmd->metadata_sm, held_root);
return dm_tm_unlock(pmd->tm, copy);