[PATCH] cpuset: mempolicy one more nodemask conversion
Finish converting mm/mempolicy.c from bitmaps to nodemasks. The previous
conversion had left one routine using bitmaps, since it involved a
corresponding change to kernel/cpuset.c
Fix that interface by replacing with a simple macro that calls nodes_subset(),
or if !CONFIG_CPUSET, returns (1).
Signed-off-by: Paul Jackson <pj@sgi.com>
Cc: Christoph Lameter <christoph@lameter.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 6e2deef..8b21786 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -21,7 +21,8 @@
extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
void cpuset_init_current_mems_allowed(void);
void cpuset_update_current_mems_allowed(void);
-void cpuset_restrict_to_mems_allowed(unsigned long *nodes);
+#define cpuset_nodes_subset_current_mems_allowed(nodes) \
+ nodes_subset((nodes), current->mems_allowed)
int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
extern int cpuset_excl_nodes_overlap(const struct task_struct *p);
@@ -42,7 +43,7 @@
static inline void cpuset_init_current_mems_allowed(void) {}
static inline void cpuset_update_current_mems_allowed(void) {}
-static inline void cpuset_restrict_to_mems_allowed(unsigned long *nodes) {}
+#define cpuset_nodes_subset_current_mems_allowed(nodes) (1)
static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl)
{
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index f63383e..6503c6da 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1750,16 +1750,6 @@
}
/**
- * cpuset_restrict_to_mems_allowed - limit nodes to current mems_allowed
- * @nodes: pointer to a node bitmap that is and-ed with mems_allowed
- */
-void cpuset_restrict_to_mems_allowed(unsigned long *nodes)
-{
- bitmap_and(nodes, nodes, nodes_addr(current->mems_allowed),
- MAX_NUMNODES);
-}
-
-/**
* cpuset_zonelist_valid_mems_allowed - check zonelist vs. curremt mems_allowed
* @zl: the zonelist to be checked
*
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 7051fe4..9dea2b8 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -387,10 +387,9 @@
if (!nodes)
return 0;
- /* Update current mems_allowed */
cpuset_update_current_mems_allowed();
- /* Ignore nodes not set in current->mems_allowed */
- cpuset_restrict_to_mems_allowed(nodes->bits);
+ if (!cpuset_nodes_subset_current_mems_allowed(*nodes))
+ return -EINVAL;
return mpol_check_policy(mode, nodes);
}