On 20:37, Wei Yongquan wrote: > > This sector_div() is in linear_conf() while the call trace indicates > > the bug happens in mddev_put(). I'll have a deeper look later today. > > > > Is this a recent regression? > > Sorry, I don't know. 2.6.24.4 has the some problem. That's good to know because there has been a bit of churn in the linear code recently. But this happened way after 2.6.24.4 and is therefore not the source of the problem. > the code linear.c : > > 158 min_spacing = conf->array_sectors / 2; > 159 sector_div(min_spacing, PAGE_SIZE/sizeof(struct dev_info *)); > > if the array size is less then 1024K and the system is 32 based, > min_spacing will be ZERO. nope, array_sectors in in 512 byte units. So the array size has to be smaller than 1024 _bytes_ for min_spacing to become zero. Andre -- The only person who always got his work done by Friday was Robinson Crusoe
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