From 288189471d7e12fb22c37870e151833f438deea8 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:39 +0000 Subject: [PATCH] Btrfs: do not BUG_ON in prepare_to_reloc We can bail out from here gracefully instead of a cold BUG_ON. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 7d1654cf9d48..9d13786eec73 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3731,7 +3731,15 @@ int prepare_to_relocate(struct reloc_control *rc) set_reloc_control(rc); trans = btrfs_join_transaction(rc->extent_root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + unset_reloc_control(rc); + /* + * extent tree is not a ref_cow tree and has no reloc_root to + * cleanup. And callers are responsible to free the above + * block rsv. + */ + return PTR_ERR(trans); + } btrfs_commit_transaction(trans, rc->extent_root); return 0; }