Commit 30b4caf5 authored Jun 08, 2011 by Li Zefan Committed by Chris Mason Jun 11, 2011

Btrfs: use join_transaction in btrfs_evict_inode()



The WARN_ON() in start_transaction() was triggered while balancing.

The cause is btrfs_relocate_chunk() started a transaction and
then called iput() on the inode that stores free space cache,
and iput() called btrfs_start_transaction() again.

Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

parent 22b63a29

fs/btrfs/inode.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3646,7 +3646,7 @@ void btrfs_evict_inode(struct inode *inode)
		btrfs_i_size_write(inode, 0);

		while (1) {
		trans = btrfs_start_transaction(root, 0);
		trans = btrfs_join_transaction(root);
		BUG_ON(IS_ERR(trans));
		trans->block_rsv = root->orphan_block_rsv;