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d67aee76d4
To prepare for the upcoming ztailpacking feature and further cleanups, introduce a unique z_erofs_lz4_decompress_ctx to keep the context, including inpages, outpages and oend, which are frequently used by the lz4 decompressor. No logic changes. Link: https://lore.kernel.org/r/20211228054604.114518-2-hsiangkao@linux.alibaba.com Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>