summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/vm/numa_memory_policy.txt4
-rw-r--r--include/linux/mempolicy.h6
-rw-r--r--mm/mempolicy.c46
3 files changed, 26 insertions, 30 deletions
diff --git a/Documentation/vm/numa_memory_policy.txt b/Documentation/vm/numa_memory_policy.txt
index 1c7dd21..27b9507 100644
--- a/Documentation/vm/numa_memory_policy.txt
+++ b/Documentation/vm/numa_memory_policy.txt
@@ -145,10 +145,6 @@ Components of Memory Policies
structure, struct mempolicy. Details of this structure will be discussed
in context, below, as required to explain the behavior.
- Note: in some functions AND in the struct mempolicy itself, the mode
- is called "policy". However, to avoid confusion with the policy tuple,
- this document will continue to use the term "mode".
-
Linux memory policy supports the following 4 behavioral modes:
Default Mode--MPOL_DEFAULT: The behavior specified by this mode is
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 5e19c22..9080fab 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -80,7 +80,7 @@ struct mm_struct;
*/
struct mempolicy {
atomic_t refcnt;
- unsigned short policy; /* See MPOL_* above */
+ unsigned short mode; /* See MPOL_* above */
unsigned short flags; /* See set_mempolicy() MPOL_F_* above */
union {
short preferred_node; /* preferred */
@@ -149,7 +149,7 @@ struct shared_policy {
spinlock_t lock;
};
-void mpol_shared_policy_init(struct shared_policy *info, unsigned short policy,
+void mpol_shared_policy_init(struct shared_policy *info, unsigned short mode,
unsigned short flags, nodemask_t *nodes);
int mpol_set_shared_policy(struct shared_policy *info,
struct vm_area_struct *vma,
@@ -213,7 +213,7 @@ static inline int mpol_set_shared_policy(struct shared_policy *info,
}
static inline void mpol_shared_policy_init(struct shared_policy *info,
- unsigned short policy, unsigned short flags, nodemask_t *nodes)
+ unsigned short mode, unsigned short flags, nodemask_t *nodes)
{
}
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 8924aaf..5e7eea2 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -106,7 +106,7 @@ enum zone_type policy_zone = 0;
struct mempolicy default_policy = {
.refcnt = ATOMIC_INIT(1), /* never free it */
- .policy = MPOL_DEFAULT,
+ .mode = MPOL_DEFAULT,
};
static const struct mempolicy_operations {
@@ -211,7 +211,7 @@ static struct mempolicy *mpol_new(unsigned short mode, unsigned short flags,
if (!policy)
return ERR_PTR(-ENOMEM);
atomic_set(&policy->refcnt, 1);
- policy->policy = mode;
+ policy->mode = mode;
policy->flags = flags;
if (nodes) {
@@ -302,7 +302,7 @@ static void mpol_rebind_policy(struct mempolicy *pol,
if (!mpol_store_user_nodemask(pol) &&
nodes_equal(pol->w.cpuset_mems_allowed, *newmask))
return;
- mpol_ops[pol->policy].rebind(pol, newmask);
+ mpol_ops[pol->mode].rebind(pol, newmask);
}
/*
@@ -608,7 +608,7 @@ static long do_set_mempolicy(unsigned short mode, unsigned short flags,
mpol_put(current->mempolicy);
current->mempolicy = new;
mpol_set_task_struct_flag();
- if (new && new->policy == MPOL_INTERLEAVE &&
+ if (new && new->mode == MPOL_INTERLEAVE &&
nodes_weight(new->v.nodes))
current->il_next = first_node(new->v.nodes);
if (mm)
@@ -621,7 +621,7 @@ static long do_set_mempolicy(unsigned short mode, unsigned short flags,
static void get_zonemask(struct mempolicy *p, nodemask_t *nodes)
{
nodes_clear(*nodes);
- switch (p->policy) {
+ switch (p->mode) {
case MPOL_DEFAULT:
break;
case MPOL_BIND:
@@ -700,14 +700,14 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
goto out;
*policy = err;
} else if (pol == current->mempolicy &&
- pol->policy == MPOL_INTERLEAVE) {
+ pol->mode == MPOL_INTERLEAVE) {
*policy = current->il_next;
} else {
err = -EINVAL;
goto out;
}
} else
- *policy = pol->policy | pol->flags;
+ *policy = pol->mode | pol->flags;
if (vma) {
up_read(&current->mm->mmap_sem);
@@ -1276,7 +1276,7 @@ static struct mempolicy *get_vma_policy(struct task_struct *task,
pol = vpol;
shared_pol = 1; /* if pol non-NULL, add ref below */
} else if (vma->vm_policy &&
- vma->vm_policy->policy != MPOL_DEFAULT)
+ vma->vm_policy->mode != MPOL_DEFAULT)
pol = vma->vm_policy;
}
if (!pol)
@@ -1290,7 +1290,7 @@ static struct mempolicy *get_vma_policy(struct task_struct *task,
static nodemask_t *nodemask_policy(gfp_t gfp, struct mempolicy *policy)
{
/* Lower zones don't get a nodemask applied for MPOL_BIND */
- if (unlikely(policy->policy == MPOL_BIND) &&
+ if (unlikely(policy->mode == MPOL_BIND) &&
gfp_zone(gfp) >= policy_zone &&
cpuset_nodemask_valid_mems_allowed(&policy->v.nodes))
return &policy->v.nodes;
@@ -1303,7 +1303,7 @@ static struct zonelist *zonelist_policy(gfp_t gfp, struct mempolicy *policy)
{
int nd;
- switch (policy->policy) {
+ switch (policy->mode) {
case MPOL_PREFERRED:
nd = policy->v.preferred_node;
if (nd < 0)
@@ -1353,7 +1353,7 @@ static unsigned interleave_nodes(struct mempolicy *policy)
*/
unsigned slab_node(struct mempolicy *policy)
{
- unsigned short pol = policy ? policy->policy : MPOL_DEFAULT;
+ unsigned short pol = policy ? policy->mode : MPOL_DEFAULT;
switch (pol) {
case MPOL_INTERLEAVE:
@@ -1454,9 +1454,9 @@ struct zonelist *huge_zonelist(struct vm_area_struct *vma, unsigned long addr,
*mpol = NULL; /* probably no unref needed */
*nodemask = NULL; /* assume !MPOL_BIND */
- if (pol->policy == MPOL_BIND) {
+ if (pol->mode == MPOL_BIND) {
*nodemask = &pol->v.nodes;
- } else if (pol->policy == MPOL_INTERLEAVE) {
+ } else if (pol->mode == MPOL_INTERLEAVE) {
unsigned nid;
nid = interleave_nid(pol, vma, addr, HPAGE_SHIFT);
@@ -1468,7 +1468,7 @@ struct zonelist *huge_zonelist(struct vm_area_struct *vma, unsigned long addr,
zl = zonelist_policy(GFP_HIGHUSER, pol);
if (unlikely(pol != &default_policy && pol != current->mempolicy)) {
- if (pol->policy != MPOL_BIND)
+ if (pol->mode != MPOL_BIND)
__mpol_put(pol); /* finished with pol */
else
*mpol = pol; /* unref needed after allocation */
@@ -1522,7 +1522,7 @@ alloc_page_vma(gfp_t gfp, struct vm_area_struct *vma, unsigned long addr)
cpuset_update_task_memory_state();
- if (unlikely(pol->policy == MPOL_INTERLEAVE)) {
+ if (unlikely(pol->mode == MPOL_INTERLEAVE)) {
unsigned nid;
nid = interleave_nid(pol, vma, addr, PAGE_SHIFT);
@@ -1574,7 +1574,7 @@ struct page *alloc_pages_current(gfp_t gfp, unsigned order)
cpuset_update_task_memory_state();
if (!pol || in_interrupt() || (gfp & __GFP_THISNODE))
pol = &default_policy;
- if (pol->policy == MPOL_INTERLEAVE)
+ if (pol->mode == MPOL_INTERLEAVE)
return alloc_page_interleave(gfp, order, interleave_nodes(pol));
return __alloc_pages_nodemask(gfp, order,
zonelist_policy(gfp, pol), nodemask_policy(gfp, pol));
@@ -1620,11 +1620,11 @@ int __mpol_equal(struct mempolicy *a, struct mempolicy *b)
{
if (!a || !b)
return 0;
- if (a->policy != b->policy)
+ if (a->mode != b->mode)
return 0;
- if (a->policy != MPOL_DEFAULT && !mpol_match_intent(a, b))
+ if (a->mode != MPOL_DEFAULT && !mpol_match_intent(a, b))
return 0;
- switch (a->policy) {
+ switch (a->mode) {
case MPOL_DEFAULT:
return 1;
case MPOL_BIND:
@@ -1644,7 +1644,7 @@ void __mpol_put(struct mempolicy *p)
{
if (!atomic_dec_and_test(&p->refcnt))
return;
- p->policy = MPOL_DEFAULT;
+ p->mode = MPOL_DEFAULT;
kmem_cache_free(policy_cache, p);
}
@@ -1710,7 +1710,7 @@ static void sp_insert(struct shared_policy *sp, struct sp_node *new)
rb_link_node(&new->nd, parent, p);
rb_insert_color(&new->nd, &sp->root);
pr_debug("inserting %lx-%lx: %d\n", new->start, new->end,
- new->policy ? new->policy->policy : 0);
+ new->policy ? new->policy->mode : 0);
}
/* Find shared policy intersecting idx */
@@ -1835,7 +1835,7 @@ int mpol_set_shared_policy(struct shared_policy *info,
pr_debug("set_shared_policy %lx sz %lu %d %d %lx\n",
vma->vm_pgoff,
- sz, npol ? npol->policy : -1,
+ sz, npol ? npol->mode : -1,
npol ? npol->flags : -1,
npol ? nodes_addr(npol->v.nodes)[0] : -1);
@@ -1935,7 +1935,7 @@ static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol)
char *p = buffer;
int l;
nodemask_t nodes;
- unsigned short mode = pol ? pol->policy : MPOL_DEFAULT;
+ unsigned short mode = pol ? pol->mode : MPOL_DEFAULT;
unsigned short flags = pol ? pol->flags : 0;
switch (mode) {
OpenPOWER on IntegriCloud