On 10/26/2017 07:48 PM, Andi Kleen wrote:
From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
When shrinking the working set shadow pages LRU we currently
use a complicated hand-over locking scheme. The isolation
function runs under the local lru lock for the list, but
it also needs to take the tree_lock for the address space.
This is done by releasing the lru lock, and then trying
to get the tree_lock and retrying on failure.
The lru lock is dropped after trying for the tree_lock, so maybe instead:
This is done by trying to get the tree_lock and then either retrying the
operation if we don't get it or releasing the lru lock.
Otherwise the patch looks good, it's a lot simpler.
Reviewed-by: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Daniel
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
