Re: [patch 2/3] mm: fault vs invalidate/truncate race fix

[Andrew Morton]

On Sat,  7 Oct 2006 15:06:21 +0200 (CEST)
Nick Piggin <npiggin@xxxxxxx> wrote:

> Fix the race between invalidate_inode_pages and do_no_page.

- In do_no_page() there's a `goto retry' where we appear to have
  forgotten to (conditionally) unlock the page.

- In do_no_page() the COW-break code seem to have forgotten to
  (conditionally) unlock the page which it just COWed?

- In do_no_page(), the unlock_page() which _is_ there doesn't test
  VM_CAN_INVALIDATE before deciding to unlock the page.

I have a bad feeling that I'm not getting the point here...

<looks>

Ah, it appears you've fixed at least some of these things in the next
patch.  Tricky.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/