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| author | Miao Xie <miaox@cn.fujitsu.com> | 2008-11-19 15:36:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-19 18:49:58 -0800 |
| commit | f481891fdc49d3d1b8a9674a1825d183069a805f (patch) | |
| tree | 4f027a1321dcd06165394d0a23e49df51c8befc1 /mm/memory_hotplug.c | |
| parent | ac97b9f9a2d0b83488e0bbcb8517b229d5c9b142 (diff) | |
| download | lwn-f481891fdc49d3d1b8a9674a1825d183069a805f.tar.gz lwn-f481891fdc49d3d1b8a9674a1825d183069a805f.zip | |
cpuset: update top cpuset's mems after adding a node
After adding a node into the machine, top cpuset's mems isn't updated.
By reviewing the code, we found that the update function
cpuset_track_online_nodes()
was invoked after node_states[N_ONLINE] changes. It is wrong because
N_ONLINE just means node has pgdat, and if node has/added memory, we use
N_HIGH_MEMORY. So, We should invoke the update function after
node_states[N_HIGH_MEMORY] changes, just like its commit says.
This patch fixes it. And we use notifier of memory hotplug instead of
direct calling of cpuset_track_online_nodes().
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Paul Menage <menage@google.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 6837a1014372..b5b2b15085a8 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -22,7 +22,6 @@ #include <linux/highmem.h> #include <linux/vmalloc.h> #include <linux/ioport.h> -#include <linux/cpuset.h> #include <linux/delay.h> #include <linux/migrate.h> #include <linux/page-isolation.h> @@ -498,8 +497,6 @@ int add_memory(int nid, u64 start, u64 size) /* we online node here. we can't roll back from here. */ node_set_online(nid); - cpuset_track_online_nodes(); - if (new_pgdat) { ret = register_one_node(nid); /* |