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SubjectRe: Boot failure with ext2 and initrds
On Thu, 16 Nov 2006 12:37:17 +0300
Alex Tomas <alex@clusterfs.com> wrote:

> >>>>> Andrew Morton (AM) writes:
>
> AM> What lock protects the fields in struct ext[234]_reserve_window from being
> AM> concurrently modified by two CPUs? None, it seems. Ditto
> AM> ext[234]_reserve_window_node. i_mutex will cover it for write(), but not
> AM> for pageout over a file hole. If we end up with a zero- or negative-sized
> AM> window then odd things might happen.
>
> truncate_mutex?
>

yes. hmm.
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