[PATCH] cpuset: implement cpuset_mems_allowed

Provide a cpuset_mems_allowed() method, which the sys_migrate_pages() code
needed, to obtain the mems_allowed vector of a cpuset, and replaced the
workaround in sys_migrate_pages() to call this new method.

Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 1feebf16ab08..37d2dd7ca3e9 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -18,7 +18,8 @@ extern int cpuset_init(void);
 extern void cpuset_init_smp(void);
 extern void cpuset_fork(struct task_struct *p);
 extern void cpuset_exit(struct task_struct *p);
-extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
+extern cpumask_t cpuset_cpus_allowed(struct task_struct *p);
+extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
 void cpuset_init_current_mems_allowed(void);
 void cpuset_update_task_memory_state(void);
 #define cpuset_nodes_subset_current_mems_allowed(nodes) \
@@ -50,6 +51,11 @@ static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p)
         return cpu_possible_map;
 }
 
+static inline nodemask_t cpuset_mems_allowed(struct task_struct *p)
+{
+        return node_possible_map;
+}
+
 static inline void cpuset_init_current_mems_allowed(void) {}
 static inline void cpuset_update_task_memory_state(void) {}
 #define cpuset_nodes_subset_current_mems_allowed(nodes) (1)