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SubjectRe: Help tracking down problem --- endless loop in __find_get_block_slow
"Thomas S. Iversen" <zensonic@zensonic.dk> wrote:
>
> But if I do
>
> dd if=/dev/zero of=/mnt/testfile count=N, N>6
>
> I get into an endless loop in __find_get_block_slow.

The only way in which __find_get_block_slow() can loop is if something
wrecked the buffer_head ring at page->private: something caused an internal
loop via bh->b_this_page.

Are you sure that's where things are hanging? That it's not stuck on a
spinlock?

A sysrq-P trace might help.
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