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    rationalise return value for ->hot_add_disk method. · 199050ea
    Neil Brown 提交于
    For all array types but linear, ->hot_add_disk returns 1 on
    success, 0 on failure.
    For linear, it returns 0 on success and -errno on failure.
    
    This doesn't cause a functional problem because the ->hot_add_disk
    function of linear is used quite differently to the others.
    However it is confusing.
    
    So convert all to return 0 for success or -errno on failure
    and fix call sites to match.
    Signed-off-by: NNeil Brown <neilb@suse.de>
    199050ea
raid5.c 138.4 KB