Re: [PATCH md-6.13 5/5] md/md-bitmap: move bitmap_{start, end}write to md upper layer

[Yu Kuai]

Hi,

在 2024/11/22 11:14, Xiao Ni 写道:
> > Ok, one place that I found is that raid5 can do extra end write while
> > stripe->dev[].towrite is NULL, the null checking is missing. I'll
> > mention that in the next version.
> Does this can cause the deadlock?

Not deadlock, the bit counter will underflow and reach COUNTER_MAX, and
bitmap_startwrite() can wait forever for the counter.

Thanks,
Kuai