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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 <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Liu Bo 2013-03-04 16:25:39 +00:00 committed by Josef Bacik
parent e1a1267054
commit 288189471d
1 changed files with 9 additions and 1 deletions
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10
fs/btrfs/relocation.c
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@ -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;
}