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    SubjectRe: [RFC][fat] use mpage_readpage when cluster size is page-alignment

    >Can't we use mpage_readpage() always? IIRC, that should work fine
    >without disadvantage.
    it should work, but maybe some performance loses if the
    cluster size is not page-alignment, for example, 4 sector/cluster
    in a 4KB/page system.
    because it will fall back to the block_read_full_page when
    non-adjacent block found in do_mpage_readpage, i think.
    the same applies to mpage_readpages too.


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