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Linux SYNC-block_bdev logical block size-CSDN博客

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上一篇分析了fs层下的sync系统调用流程,这一篇分析block层的bio申请。BIOfs层下刷的pages通过调用submit_bio把地址连续的page进行合并,void submit_bio(int rw, struct bio *bio){ bio->bi_rw |= rw; /* * If it's a regular read/write or a ba..._bdev logical block size