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由 Yan, Zheng 提交于
Introduce metadata reservation context for delayed allocation and update various related functions. This patch also introduces EXTENT_FIRST_DELALLOC control bit for set/clear_extent_bit. It tells set/clear_bit_hook whether they are processing the first extent_state with EXTENT_DELALLOC bit set. This change is important if set/clear_extent_bit involves multiple extent_state. Signed-off-by: NYan Zheng <zheng.yan@oracle.com> Signed-off-by: NChris Mason <chris.mason@oracle.com>
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