---

yaml --- r: 318873 b: refs/heads/master c: d13603e h: refs/heads/master i: 318871: 26f5d55 v: v3
git-mirror · Jul 10, 2012 · 246440f · 246440f
1 parent f52ac53
commit 246440f
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Showing 3 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2f38b3e1900634e64a186873b3388b1bf85dabc0
+refs/heads/master: d13603ef6e14a12cd65a6975e8117c0fea7c7ddf
diff --git a/trunk/fs/btrfs/transaction.c b/trunk/fs/btrfs/transaction.c
@@ -345,6 +345,7 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
 	h->transaction = cur_trans;
 	h->blocks_used = 0;
 	h->bytes_reserved = 0;
+	h->root = root;
 	h->delayed_ref_updates = 0;
 	h->use_count = 1;
 	h->block_rsv = NULL;
@@ -511,6 +512,11 @@ 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);
 	while (count < 2) {
 		unsigned long cur = trans->delayed_ref_updates;
 		trans->delayed_ref_updates = 0;

diff --git a/trunk/fs/btrfs/transaction.h b/trunk/fs/btrfs/transaction.h
@@ -57,6 +57,12 @@ struct btrfs_trans_handle {
 	struct btrfs_block_rsv *block_rsv;
 	struct btrfs_block_rsv *orig_rsv;
 	int aborted;
+	/*
+	 * this root is only needed to validate that the root passed to
+	 * start_transaction is the same as the one passed to end_transaction.
+	 * Subvolume quota depends on this
+	 */
+	struct btrfs_root *root;
 };
 
 struct btrfs_pending_snapshot {