Commit 6819703f authored Jul 07, 2020 by David Sterba

btrfs: clear defrag status of a root if starting transaction fails



The defrag loop processes leaves in batches and starting transaction for
each. The whole defragmentation on a given root is protected by a bit
but in case the transaction fails, the bit is not cleared

In case the transaction fails the bit would prevent starting
defragmentation again, so make sure it's cleared.

CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 8c5ec995

fs/btrfs/transaction.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -1406,8 +1406,10 @@ int btrfs_defrag_root(struct btrfs_root *root)

		while (1) {
		trans = btrfs_start_transaction(root, 0);
		if (IS_ERR(trans))
		return PTR_ERR(trans);
		if (IS_ERR(trans)) {
		ret = PTR_ERR(trans);
		break;
		}

		ret = btrfs_defrag_leaves(trans, root);