mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local Policy

[pandora-kernel.git] / Documentation / vm / numa_memory_policy.txt

diff --git a/Documentation/vm/numa_memory_policy.txt b/Documentation/vm/numa_memory_policy.txt
index 13cca5a..bad16d3 100644 (file)
--- a/Documentation/vm/numa_memory_policy.txt
+++ b/Documentation/vm/numa_memory_policy.txt
@@ -176,12 +176,11 @@ Components of Memory Policies
        containing the cpu where the allocation takes place.
 
            Internally, the Preferred policy uses a single node--the
-           preferred_node member of struct mempolicy.  A "distinguished
-           value of this preferred_node, currently '-1', is interpreted
-           as "the node containing the cpu where the allocation takes
-           place"--local allocation.  "Local" allocation policy can be
-           viewed as a Preferred policy that starts at the node containing
-           the cpu where the allocation takes place.
+           preferred_node member of struct mempolicy.  When the internal
+           mode flag MPOL_F_LOCAL is set, the preferred_node is ignored and
+           the policy is interpreted as local allocation.  "Local" allocation
+           policy can be viewed as a Preferred policy that starts at the node
+           containing the cpu where the allocation takes place.
 
            It is possible for the user to specify that local allocation is
            always preferred by passing an empty nodemask with this mode.