x86: introduce frame_pointer() and stack_pointer()

[pandora-kernel.git] / mm / mempolicy.c

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 3d6ac95..568152a 100644 (file)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -72,7 +72,6 @@
 #include <linux/hugetlb.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
-#include <linux/mm.h>
 #include <linux/nodemask.h>
 #include <linux/cpuset.h>
 #include <linux/gfp.h>
@@ -82,13 +81,13 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/compat.h>
-#include <linux/mempolicy.h>
 #include <linux/swap.h>
 #include <linux/seq_file.h>
 #include <linux/proc_fs.h>
 #include <linux/migrate.h>
 #include <linux/rmap.h>
 #include <linux/security.h>
+#include <linux/syscalls.h>
 
 #include <asm/tlbflush.h>
 #include <asm/uaccess.h>
@@ -110,6 +109,9 @@ struct mempolicy default_policy = {
        .policy = MPOL_DEFAULT,
 };
 
+static void mpol_rebind_policy(struct mempolicy *pol,
+                               const nodemask_t *newmask);
+
 /* Do sanity checking on a policy */
 static int mpol_check_policy(int mode, nodemask_t *nodes)
 {
@@ -128,7 +130,7 @@ static int mpol_check_policy(int mode, nodemask_t *nodes)
                        return -EINVAL;
                break;
        }
-       return nodes_subset(*nodes, node_online_map) ? 0 : -EINVAL;
+       return nodes_subset(*nodes, node_states[N_HIGH_MEMORY]) ? 0 : -EINVAL;
 }
 
 /* Generate a custom zonelist for the BIND policy. */
@@ -185,7 +187,9 @@ static struct mempolicy *mpol_new(int mode, nodemask_t *nodes)
        switch (mode) {
        case MPOL_INTERLEAVE:
                policy->v.nodes = *nodes;
-               if (nodes_weight(*nodes) == 0) {
+               nodes_and(policy->v.nodes, policy->v.nodes,
+                                       node_states[N_HIGH_MEMORY]);
+               if (nodes_weight(policy->v.nodes) == 0) {
                        kmem_cache_free(policy_cache, policy);
                        return ERR_PTR(-EINVAL);
                }
@@ -459,7 +463,7 @@ static void mpol_set_task_struct_flag(void)
 }
 
 /* Set the process memory policy */
-long do_set_mempolicy(int mode, nodemask_t *nodes)
+static long do_set_mempolicy(int mode, nodemask_t *nodes)
 {
        struct mempolicy *new;
 
@@ -494,9 +498,9 @@ static void get_zonemask(struct mempolicy *p, nodemask_t *nodes)
                *nodes = p->v.nodes;
                break;
        case MPOL_PREFERRED:
-               /* or use current node instead of online map? */
+               /* or use current node instead of memory_map? */
                if (p->v.preferred_node < 0)
-                       *nodes = node_online_map;
+                       *nodes = node_states[N_HIGH_MEMORY];
                else
                        node_set(p->v.preferred_node, *nodes);
                break;
@@ -519,8 +523,8 @@ static int lookup_node(struct mm_struct *mm, unsigned long addr)
 }
 
 /* Retrieve NUMA policy */
-long do_get_mempolicy(int *policy, nodemask_t *nmask,
-                       unsigned long addr, unsigned long flags)
+static long do_get_mempolicy(int *policy, nodemask_t *nmask,
+                            unsigned long addr, unsigned long flags)
 {
        int err;
        struct mm_struct *mm = current->mm;
@@ -528,8 +532,18 @@ long do_get_mempolicy(int *policy, nodemask_t *nmask,
        struct mempolicy *pol = current->mempolicy;
 
        cpuset_update_task_memory_state();
-       if (flags & ~(unsigned long)(MPOL_F_NODE|MPOL_F_ADDR))
+       if (flags &
+               ~(unsigned long)(MPOL_F_NODE|MPOL_F_ADDR|MPOL_F_MEMS_ALLOWED))
                return -EINVAL;
+
+       if (flags & MPOL_F_MEMS_ALLOWED) {
+               if (flags & (MPOL_F_NODE|MPOL_F_ADDR))
+                       return -EINVAL;
+               *policy = 0;    /* just so it's initialized */
+               *nmask  = cpuset_current_mems_allowed;
+               return 0;
+       }
+
        if (flags & MPOL_F_ADDR) {
                down_read(&mm->mmap_sem);
                vma = find_vma_intersection(mm, addr, addr+1);
@@ -601,7 +615,8 @@ static struct page *new_node_page(struct page *page, unsigned long node, int **x
  * Migrate pages from one node to a target node.
  * Returns error or the number of pages not migrated.
  */
-int migrate_to_node(struct mm_struct *mm, int source, int dest, int flags)
+static int migrate_to_node(struct mm_struct *mm, int source, int dest,
+                          int flags)
 {
        nodemask_t nmask;
        LIST_HEAD(pagelist);
@@ -732,8 +747,9 @@ static struct page *new_vma_page(struct page *page, unsigned long private, int *
 }
 #endif
 
-long do_mbind(unsigned long start, unsigned long len,
-               unsigned long mode, nodemask_t *nmask, unsigned long flags)
+static long do_mbind(unsigned long start, unsigned long len,
+                    unsigned long mode, nodemask_t *nmask,
+                    unsigned long flags)
 {
        struct vm_area_struct *vma;
        struct mm_struct *mm = current->mm;
@@ -955,7 +971,7 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
                goto out;
        }
 
-       if (!nodes_subset(new, node_online_map)) {
+       if (!nodes_subset(new, node_states[N_HIGH_MEMORY])) {
                err = -EINVAL;
                goto out;
        }
@@ -978,7 +994,8 @@ asmlinkage long sys_get_mempolicy(int __user *policy,
                                unsigned long maxnode,
                                unsigned long addr, unsigned long flags)
 {
-       int err, pval;
+       int err;
+       int uninitialized_var(pval);
        nodemask_t nodes;
 
        if (nmask != NULL && maxnode < MAX_NUMNODES)
@@ -1527,8 +1544,8 @@ static void sp_delete(struct shared_policy *sp, struct sp_node *n)
        kmem_cache_free(sn_cache, n);
 }
 
-struct sp_node *
-sp_alloc(unsigned long start, unsigned long end, struct mempolicy *pol)
+static struct sp_node *sp_alloc(unsigned long start, unsigned long end,
+                               struct mempolicy *pol)
 {
        struct sp_node *n = kmem_cache_alloc(sn_cache, GFP_KERNEL);
 
@@ -1677,7 +1694,7 @@ void __init numa_policy_init(void)
         * fall back to the largest node if they're all smaller.
         */
        nodes_clear(interleave_nodes);
-       for_each_online_node(nid) {
+       for_each_node_state(nid, N_HIGH_MEMORY) {
                unsigned long total_pages = node_present_pages(nid);
 
                /* Preserve the largest node */
@@ -1706,7 +1723,8 @@ void numa_default_policy(void)
 }
 
 /* Migrate a policy to a different set of nodes */
-void mpol_rebind_policy(struct mempolicy *pol, const nodemask_t *newmask)
+static void mpol_rebind_policy(struct mempolicy *pol,
+                              const nodemask_t *newmask)
 {
        nodemask_t *mpolmask;
        nodemask_t tmp;
@@ -1963,7 +1981,7 @@ int show_numa_map(struct seq_file *m, void *v)
                seq_printf(m, " huge");
        } else {
                check_pgd_range(vma, vma->vm_start, vma->vm_end,
-                               &node_online_map, MPOL_MF_STATS, md);
+                       &node_states[N_HIGH_MEMORY], MPOL_MF_STATS, md);
        }
 
        if (!md->pages)
@@ -1990,7 +2008,7 @@ int show_numa_map(struct seq_file *m, void *v)
        if (md->writeback)
                seq_printf(m," writeback=%lu", md->writeback);
 
-       for_each_online_node(n)
+       for_each_node_state(n, N_HIGH_MEMORY)
                if (md->node[n])
                        seq_printf(m, " N%d=%lu", n, md->node[n]);
 out: