The patch titled
Memoryless nodes: introduce mask of nodes with memory
has been added to the -mm tree. Its filename is
memoryless-nodes-introduce-mask-of-nodes-with-memory.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Memoryless nodes: introduce mask of nodes with memory
From: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
It is necessary to know if nodes have memory since we have recently begun to
add support for memoryless nodes. For that purpose we introduce a new node
state N_MEMORY.
A node has its bit in node_memory_map set if it has memory. If a node has
memory then it has at least one zone defined in its pgdat structure that is
located in the pgdat itself.
N_MEMORY can then be used in various places to insure that we do the right
thing when we encounter a memoryless node.
Signed-off-by: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx>
Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxx>
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Tested-off-by: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx>
Acked-by: Bob Picco <bob.picco@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/nodemask.h | 1 +
mm/page_alloc.c | 9 +++++++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff -puN include/linux/nodemask.h~memoryless-nodes-introduce-mask-of-nodes-with-memory include/linux/nodemask.h
--- a/include/linux/nodemask.h~memoryless-nodes-introduce-mask-of-nodes-with-memory
+++ a/include/linux/nodemask.h
@@ -343,6 +343,7 @@ static inline void __nodes_remap(nodemas
enum node_states {
N_POSSIBLE, /* The node could become online at some point */
N_ONLINE, /* The node is online */
+ N_MEMORY, /* The node has memory */
NR_NODE_STATES
};
diff -puN mm/page_alloc.c~memoryless-nodes-introduce-mask-of-nodes-with-memory mm/page_alloc.c
--- a/mm/page_alloc.c~memoryless-nodes-introduce-mask-of-nodes-with-memory
+++ a/mm/page_alloc.c
@@ -2313,8 +2313,13 @@ static int __build_all_zonelists(void *d
int nid;
for_each_online_node(nid) {
- build_zonelists(NODE_DATA(nid));
- build_zonelist_cache(NODE_DATA(nid));
+ pg_data_t *pgdat = NODE_DATA(nid);
+
+ build_zonelists(pgdat);
+ build_zonelist_cache(pgdat);
+
+ if (pgdat->node_present_pages)
+ node_set_state(nid, N_MEMORY);
}
return 0;
}
_
Patches currently in -mm which might be from lee.schermerhorn@xxxxxx are
numa-generic-management-of-nodemasks-for-various-purposes.patch
memoryless-nodes-introduce-mask-of-nodes-with-memory.patch
memoryless-nodes-fix-interleave-behavior.patch
oom-use-the-n_memory-map-instead-of-constructing-one-on-the-fly.patch
memoryless-nodes-no-need-for-kswapd.patch
memoryless-node-slab-support.patch
memoryless-nodes-slub-support.patch
uncached-allocator-handle-memoryless-nodes.patch
memoryless-node-allow-profiling-data-to-fall-back-to-other-nodes.patch
memoryless-nodes-update-memory-policy-and-page-migration.patch
add-n_cpu-node-state.patch
memoryless-nodes-fix-gfp_thisnode-behavior.patch
memoryless-nodes-use-node_memory_map-for-cpusets.patch
memoryless-nodes-drop-one-memoryless-node-boot-warning.patch
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