On Mon, 6 Aug 2007, Daniel Phillips wrote:

Correct.  That is what the throttling part of these patches is about.  

Where are those patches?

In order to fix the vm writeout deadlock problem properly, two things 
are necessary:

  1) Throttle the vm writeout path to use a bounded amount of memory

  2) Provide access to a sufficiently large amount of reserve memory for 
each memory user in the vm writeout path

You can understand every detail of this patch set and the following ones 
coming from Peter in terms of those two requirements.

AFAICT: This patchset is not throttling processes but failing allocations. 
The patchset does not reconfigure the memory reserves as expected. Instead 
new reserve logic is added. And I suspect that we have the same issues as 
in earlier releases with various corner cases not being covered. Code is 
added that is supposedly not used. If it ever is on a large config then we 
are in very deep trouble by the new code paths themselves that serialize 
things in order to give some allocations precendence over the other 
allocations that are made to fail ....





--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>