Creating snapshot passes extent_root to commit its transaction,
but it can lead to the warning of checking root for quota in
the __btrfs_end_transaction() when someone else is committing
the current transaction. Since we've recorded the needed root
in trans_handle, just use it to get rid of the warning.
Signed-off-by: Liu Bo <bo.li....@oracle.com>
---
fs/btrfs/transaction.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f11c2e0..5c10871 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -626,14 +626,14 @@ static int __btrfs_end_transaction(struct
btrfs_trans_handle *trans,
btrfs_trans_release_metadata(trans, root);
trans->block_rsv = NULL;
- /*
- * the same root has to be passed to start_transaction and
- * end_transaction. Subvolume quota depends on this.
- */
WARN_ON(trans->root != root);
if (trans->qgroup_reserved) {
- btrfs_qgroup_free(root, trans->qgroup_reserved);
+ /*
+ * the same root has to be passed here between start_transaction
+ * and end_transaction. Subvolume quota depends on this.
+ */
+ btrfs_qgroup_free(trans->root, trans->qgroup_reserved);
trans->qgroup_reserved = 0;
}
--
1.7.7.6
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