sorry, I think I've found the point. first_logical_block is passed out in a "for" loop in "mpage_readpages" and passed again to the next "do_mpage_readpage".
Sorry for the haste asking. On 10/21/07, Nai XIA <[EMAIL PROTECTED]> wrote: > hi, it may be a stupid question, but I am not quite clear about what > "first_logical_block" is used for as one of parameters of > "do_mpage_readpage". > > I searched all the source code and I found that "first_logical_block" > always equals zero when passed to "do_mpage_readpage" and is used > only in scope of "do_mpage_readpage". > > This makes me wonder about: > 1. when should "first_logical_block" passed as non-zero values ? > 2. why "first_logical_block" is one of args of "do_mpage_readpage" > instead of being a local variable of it ? ( it seems that no one uses > "first_logical_block" outside "do_mpage_readpage") > > Anyone can help me out . > Thanks in advance! > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
