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SubjectFile Corruption Bug.. continued
I've now been through most of the 2.2.7->2.2.9 diff set discarding stuff
that seems not to be a viable candiate.

The remaining suspects are:
o Quota - which has big 2.2.7->2.2.9 changes.
o The small scsi changes (dubious)
o A small mm change

There are other candiates - notably
TCP changes
interrupt changes

The tcp changes ought to have shown up more than this does. The interrupt
changes dont really seem to explain cross platform stuff. And I doubt most
people running these tests were running irda. NFS is a possibility.

So - are most people seeing the problems running quotas ? And would someone
with their brain firmly wrapped around the page cache/vfs verify this change
that was made is absolutely safe

diff -u --new-file --recursive --exclude-from ../../exclude linux.2.2.7/mm/page_alloc.c linux.2.2.9/mm/page_alloc.c
--- linux.2.2.7/mm/page_alloc.c Wed Jun 23 17:48:03 1999
+++ linux.2.2.9/mm/page_alloc.c Wed Jun 23 17:43:53 1999
@@ -419,12 +419,12 @@

- /* The page is unshared, and we want write access. In this
- case, it is safe to tear down the swap cache and give the
- page over entirely to this process. */
- if (PageSwapCache(page_map))
- delete_from_swap_cache(page_map);
+ /*
+ * The page is unshared and we're going to dirty it - so tear
+ * down the swap cache and give exclusive access to the page to
+ * this process.
+ */
+ delete_from_swap_cache(page_map);
set_pte(page_table, pte_mkwrite(pte_mkdirty(mk_pte(page, vma->vm_page_prot))));
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