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Commit 94fcca9f authored by Yan, Zheng's avatar Yan, Zheng Committed by Chris Mason
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Btrfs: optimize back reference update during btrfs_drop_snapshot 



This patch reading level 0 tree blocks that already use full backrefs.

Signed-off-by: default avatarYan Zheng <zheng.yan@oracle.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent efefb143
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