Hugh Dickins <hugh@veritas.com> wrote:
>
> It is likely that I've screwed up on the "Morton pages", those
> ext3 journal pages locked at truncate time which then turn into
> fish with wings: please check them out, I never manage to wrap
> my head around them. Certainly don't want a page using private
> for both bufferheads and swp_entry_t.
It goes BUG in try_to_free_buffers().
We really should fix this up for other reasons, probably by making ext3's
per-page truncate operations wait on commit, and be more aggressive about
pulling the page's buffers off the transaction at truncate time.
The same thing _could_ happen with other filesystems; not too sure about
that.
Still. I suggest you look at freeing up page->list from anon/swapcache
pages. It really doesn't do much.
Meanwhile, I backed out that bit - I don't actually see where the failure is
anyway. The page is page_mapped(), !PageAnon and ->mapping == NULL.
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This archive was generated by hypermail 2b29 : Sun Mar 23 2003 - 22:00:34 EST