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由 Chao Yu 提交于
Introduce a generic function replace_block base on recover_data_page, and export it. So with it we can operate file's meta data which is in CP/SSA area when we invoke fallocate with FALLOC_FL_COLLAPSE_RANGE flag. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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