[dm-devel] [PATCH 13/14] dm_thin: commit just before processing a pool target info request
Joe Thornber
ejt at redhat.com
Fri Mar 16 15:22:36 UTC 2012
Enhancement.
This makes the free block counts more accurate.
Signed-off-by: Joe Thornber <ejt at redhat.com>
Signed-off-by: Mike Snitzer <snitzer at redhat.com>
---
drivers/md/dm-thin.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index a3a66af..63f8adf 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2305,6 +2305,15 @@ static int pool_status(struct dm_target *ti, status_type_t type,
if (r)
return r;
+ /*
+ * If we're in the middle of a transaction the free block
+ * counts can be quite out of date, so we do a quick
+ * commit.
+ */
+ r = dm_pool_commit_metadata(pool->pmd);
+ if (r)
+ return r;
+
r = dm_pool_get_free_metadata_block_count(pool->pmd,
&nr_free_blocks_metadata);
if (r)
--
1.7.9.1
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