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Btrfs: Metadata ENOSPC handling for balance

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This patch adds metadata ENOSPC handling for the balance code.
It is consisted by following major changes:

1. Avoid COW tree leave in the phrase of merging tree.

2. Handle interaction with snapshot creation.

3. make the backref cache can live across transactions.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Yan, Zheng 2010-05-16 10:49:59 -04:00 • committed by Chris Mason
commit 3fd0a5585e
5 changed files with 1170 additions and 754 deletions
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