From: Andrea Arcangeli <firstname.lastname@example.org>
Date: 19 Aug 2001 08:07:42 +0200
Only in 2.4.9aa2: 00_silent-stack-overflow-5
Only in 2.4.9aa3: 00_silent-stack-overflow-6
Updated to run expand_stack always with the mm write semaphore acquired
to fix the race conditions. Upgrading the semaphore during
map_user_kiobuf was quite painful so I just disallowed to do direct I/O
on a growsdown VMA (you can still do that as far as it doesn't need to
be live extended on the fly).
Only in 2.4.9aa3: 00_vm_raend-race-1
Sanitize the vm_raend field before trusting it, such field is racy.
Only in 2.4.9aa2: 10_expand-stack-smp-1
Dropped (it wasn't needed).
Only in 2.4.9aa2: 70_mmap-rb-4
Only in 2.4.9aa3: 70_mmap-rb-5
Backed out a few unnecessary minor changes.