We can bail out from here gracefully instead of a cold BUG_ON.
Signed-off-by: Liu Bo <bo.li....@oracle.com>
---
fs/btrfs/relocation.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 8cae3d7..c45c833 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;
}
--
1.7.7
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