On Sun, Sep 15, 2002 at 12:17:30AM -0700, Andrew Morton wrote:
> I do not recall ever having seen any bug/problem reports which this patch
> would have helped to solve. Could you explain in more detai why is it useful?
LDT's were formerly allocated in vmallocspace. This presented difficulties
with many simultaneous threaded applications. Also, given that there is
zero vmallocspace OOM recovery now present in the kernel some method of
monitoring this aspect of system behavior up until the point of failure is
useful for detecting further problem areas (LDT's were addressed by using
Also, dynamic vmalloc allocations may very well be starved by boot-time
allocations on systems where much vmallocspace is required for IO memory.
The failure mode of such is effectively deadlock, since they block
indefinitely waiting for permanent boot-time allocations to be freed up.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/