Re: [PATCH v2] Btrfs: fix panic in balance due to EIO

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On 07/12/2016 01:29 PM, Liu Bo wrote:
During build_backref_tree(), if we fail to read a btree node,
we can eventually run into BUG_ON(cache->nr_nodes) that we put
in backref_cache_cleanup(), meaning we have at least one
memory leak.

This frees the backref_node that we's allocated at the very
beginning of build_backref_tree().

Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>

Signed-off-by: Chris Mason <clm@xxxxxx>

-chris
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