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-rw-r--r--mm/bootmem.c2
-rw-r--r--mm/huge_memory.c1
-rw-r--r--mm/kmemleak.c6
-rw-r--r--mm/memblock.c2
-rw-r--r--mm/memory_hotplug.c16
-rw-r--r--mm/page_alloc.c2
-rw-r--r--mm/shmem.c171
-rw-r--r--mm/slab.c8
-rw-r--r--mm/slub.c15
-rw-r--r--mm/vmscan.c1
-rw-r--r--mm/vmstat.c2
11 files changed, 44 insertions, 182 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index bcb63ac48cc5..f468185b3b28 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -419,7 +419,7 @@ int __init reserve_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
}
/**
- * reserve_bootmem - mark a page range as usable
+ * reserve_bootmem - mark a page range as reserved
* @addr: starting address of the range
* @size: size of the range in bytes
* @flags: reservation flags (see linux/bootmem.h)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 57c4b9309015..141dbb695097 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1811,7 +1811,6 @@ static void __collapse_huge_page_copy(pte_t *pte, struct page *page,
src_page = pte_page(pteval);
copy_user_highpage(page, src_page, address, vma);
VM_BUG_ON(page_mapcount(src_page) != 1);
- VM_BUG_ON(page_count(src_page) != 2);
release_pte_page(src_page);
/*
* ptl mostly unnecessary, but preempt has to
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 45eb6217bf38..0de83b4541e9 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1483,13 +1483,11 @@ static void *kmemleak_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct kmemleak_object *prev_obj = v;
struct kmemleak_object *next_obj = NULL;
- struct list_head *n = &prev_obj->object_list;
+ struct kmemleak_object *obj = prev_obj;
++(*pos);
- list_for_each_continue_rcu(n, &object_list) {
- struct kmemleak_object *obj =
- list_entry(n, struct kmemleak_object, object_list);
+ list_for_each_entry_continue_rcu(obj, &object_list, object_list) {
if (get_object(obj)) {
next_obj = obj;
break;
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d9393c7edc9..82aa349d2f7a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -246,7 +246,7 @@ static int __init_memblock memblock_double_array(struct memblock_type *type,
min(new_area_start, memblock.current_limit),
new_alloc_size, PAGE_SIZE);
- new_array = addr ? __va(addr) : 0;
+ new_array = addr ? __va(addr) : NULL;
}
if (!addr) {
pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 3ad25f9d1fc1..6a5b90d0cfd7 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -126,9 +126,6 @@ static void register_page_bootmem_info_section(unsigned long start_pfn)
struct mem_section *ms;
struct page *page, *memmap;
- if (!pfn_valid(start_pfn))
- return;
-
section_nr = pfn_to_section_nr(start_pfn);
ms = __nr_to_section(section_nr);
@@ -187,9 +184,16 @@ void register_page_bootmem_info_node(struct pglist_data *pgdat)
end_pfn = pfn + pgdat->node_spanned_pages;
/* register_section info */
- for (; pfn < end_pfn; pfn += PAGES_PER_SECTION)
- register_page_bootmem_info_section(pfn);
-
+ for (; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
+ /*
+ * Some platforms can assign the same pfn to multiple nodes - on
+ * node0 as well as nodeN. To avoid registering a pfn against
+ * multiple nodes we check that this pfn does not already
+ * reside in some other node.
+ */
+ if (pfn_valid(pfn) && (pfn_to_nid(pfn) == node))
+ register_page_bootmem_info_section(pfn);
+ }
}
#endif /* !CONFIG_SPARSEMEM_VMEMMAP */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index c66fb875104a..c13ea7538891 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -584,7 +584,7 @@ static inline void __free_one_page(struct page *page,
combined_idx = buddy_idx & page_idx;
higher_page = page + (combined_idx - page_idx);
buddy_idx = __find_buddy_index(combined_idx, order + 1);
- higher_buddy = page + (buddy_idx - combined_idx);
+ higher_buddy = higher_page + (buddy_idx - combined_idx);
if (page_is_buddy(higher_page, higher_buddy, order + 1)) {
list_add_tail(&page->lru,
&zone->free_area[order].free_list[migratetype]);
diff --git a/mm/shmem.c b/mm/shmem.c
index d4e184e2a38e..d3752110c8c7 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -77,13 +77,6 @@ static struct vfsmount *shm_mnt;
/* Symlink up to this size is kmalloc'ed instead of using a swappable page */
#define SHORT_SYMLINK_LEN 128
-struct shmem_xattr {
- struct list_head list; /* anchored by shmem_inode_info->xattr_list */
- char *name; /* xattr name */
- size_t size;
- char value[0];
-};
-
/*
* shmem_fallocate and shmem_writepage communicate via inode->i_private
* (with i_mutex making sure that it has only one user at a time):
@@ -636,7 +629,6 @@ static int shmem_setattr(struct dentry *dentry, struct iattr *attr)
static void shmem_evict_inode(struct inode *inode)
{
struct shmem_inode_info *info = SHMEM_I(inode);
- struct shmem_xattr *xattr, *nxattr;
if (inode->i_mapping->a_ops == &shmem_aops) {
shmem_unacct_size(info->flags, inode->i_size);
@@ -650,10 +642,7 @@ static void shmem_evict_inode(struct inode *inode)
} else
kfree(info->symlink);
- list_for_each_entry_safe(xattr, nxattr, &info->xattr_list, list) {
- kfree(xattr->name);
- kfree(xattr);
- }
+ simple_xattrs_free(&info->xattrs);
BUG_ON(inode->i_blocks);
shmem_free_inode(inode->i_sb);
clear_inode(inode);
@@ -1377,7 +1366,7 @@ static struct inode *shmem_get_inode(struct super_block *sb, const struct inode
spin_lock_init(&info->lock);
info->flags = flags & VM_NORESERVE;
INIT_LIST_HEAD(&info->swaplist);
- INIT_LIST_HEAD(&info->xattr_list);
+ simple_xattrs_init(&info->xattrs);
cache_no_acl(inode);
switch (mode & S_IFMT) {
@@ -2060,28 +2049,6 @@ static void shmem_put_link(struct dentry *dentry, struct nameidata *nd, void *co
*/
/*
- * Allocate new xattr and copy in the value; but leave the name to callers.
- */
-static struct shmem_xattr *shmem_xattr_alloc(const void *value, size_t size)
-{
- struct shmem_xattr *new_xattr;
- size_t len;
-
- /* wrap around? */
- len = sizeof(*new_xattr) + size;
- if (len <= sizeof(*new_xattr))
- return NULL;
-
- new_xattr = kmalloc(len, GFP_KERNEL);
- if (!new_xattr)
- return NULL;
-
- new_xattr->size = size;
- memcpy(new_xattr->value, value, size);
- return new_xattr;
-}
-
-/*
* Callback for security_inode_init_security() for acquiring xattrs.
*/
static int shmem_initxattrs(struct inode *inode,
@@ -2090,11 +2057,11 @@ static int shmem_initxattrs(struct inode *inode,
{
struct shmem_inode_info *info = SHMEM_I(inode);
const struct xattr *xattr;
- struct shmem_xattr *new_xattr;
+ struct simple_xattr *new_xattr;
size_t len;
for (xattr = xattr_array; xattr->name != NULL; xattr++) {
- new_xattr = shmem_xattr_alloc(xattr->value, xattr->value_len);
+ new_xattr = simple_xattr_alloc(xattr->value, xattr->value_len);
if (!new_xattr)
return -ENOMEM;
@@ -2111,91 +2078,12 @@ static int shmem_initxattrs(struct inode *inode,
memcpy(new_xattr->name + XATTR_SECURITY_PREFIX_LEN,
xattr->name, len);
- spin_lock(&info->lock);
- list_add(&new_xattr->list, &info->xattr_list);
- spin_unlock(&info->lock);
+ simple_xattr_list_add(&info->xattrs, new_xattr);
}
return 0;
}
-static int shmem_xattr_get(struct dentry *dentry, const char *name,
- void *buffer, size_t size)
-{
- struct shmem_inode_info *info;
- struct shmem_xattr *xattr;
- int ret = -ENODATA;
-
- info = SHMEM_I(dentry->d_inode);
-
- spin_lock(&info->lock);
- list_for_each_entry(xattr, &info->xattr_list, list) {
- if (strcmp(name, xattr->name))
- continue;
-
- ret = xattr->size;
- if (buffer) {
- if (size < xattr->size)
- ret = -ERANGE;
- else
- memcpy(buffer, xattr->value, xattr->size);
- }
- break;
- }
- spin_unlock(&info->lock);
- return ret;
-}
-
-static int shmem_xattr_set(struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
-{
- struct shmem_inode_info *info = SHMEM_I(inode);
- struct shmem_xattr *xattr;
- struct shmem_xattr *new_xattr = NULL;
- int err = 0;
-
- /* value == NULL means remove */
- if (value) {
- new_xattr = shmem_xattr_alloc(value, size);
- if (!new_xattr)
- return -ENOMEM;
-
- new_xattr->name = kstrdup(name, GFP_KERNEL);
- if (!new_xattr->name) {
- kfree(new_xattr);
- return -ENOMEM;
- }
- }
-
- spin_lock(&info->lock);
- list_for_each_entry(xattr, &info->xattr_list, list) {
- if (!strcmp(name, xattr->name)) {
- if (flags & XATTR_CREATE) {
- xattr = new_xattr;
- err = -EEXIST;
- } else if (new_xattr) {
- list_replace(&xattr->list, &new_xattr->list);
- } else {
- list_del(&xattr->list);
- }
- goto out;
- }
- }
- if (flags & XATTR_REPLACE) {
- xattr = new_xattr;
- err = -ENODATA;
- } else {
- list_add(&new_xattr->list, &info->xattr_list);
- xattr = NULL;
- }
-out:
- spin_unlock(&info->lock);
- if (xattr)
- kfree(xattr->name);
- kfree(xattr);
- return err;
-}
-
static const struct xattr_handler *shmem_xattr_handlers[] = {
#ifdef CONFIG_TMPFS_POSIX_ACL
&generic_acl_access_handler,
@@ -2226,6 +2114,7 @@ static int shmem_xattr_validate(const char *name)
static ssize_t shmem_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
+ struct shmem_inode_info *info = SHMEM_I(dentry->d_inode);
int err;
/*
@@ -2240,12 +2129,13 @@ static ssize_t shmem_getxattr(struct dentry *dentry, const char *name,
if (err)
return err;
- return shmem_xattr_get(dentry, name, buffer, size);
+ return simple_xattr_get(&info->xattrs, name, buffer, size);
}
static int shmem_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
+ struct shmem_inode_info *info = SHMEM_I(dentry->d_inode);
int err;
/*
@@ -2260,15 +2150,12 @@ static int shmem_setxattr(struct dentry *dentry, const char *name,
if (err)
return err;
- if (size == 0)
- value = ""; /* empty EA, do not remove */
-
- return shmem_xattr_set(dentry->d_inode, name, value, size, flags);
-
+ return simple_xattr_set(&info->xattrs, name, value, size, flags);
}
static int shmem_removexattr(struct dentry *dentry, const char *name)
{
+ struct shmem_inode_info *info = SHMEM_I(dentry->d_inode);
int err;
/*
@@ -2283,45 +2170,13 @@ static int shmem_removexattr(struct dentry *dentry, const char *name)
if (err)
return err;
- return shmem_xattr_set(dentry->d_inode, name, NULL, 0, XATTR_REPLACE);
-}
-
-static bool xattr_is_trusted(const char *name)
-{
- return !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
+ return simple_xattr_remove(&info->xattrs, name);
}
static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
{
- bool trusted = capable(CAP_SYS_ADMIN);
- struct shmem_xattr *xattr;
- struct shmem_inode_info *info;
- size_t used = 0;
-
- info = SHMEM_I(dentry->d_inode);
-
- spin_lock(&info->lock);
- list_for_each_entry(xattr, &info->xattr_list, list) {
- size_t len;
-
- /* skip "trusted." attributes for unprivileged callers */
- if (!trusted && xattr_is_trusted(xattr->name))
- continue;
-
- len = strlen(xattr->name) + 1;
- used += len;
- if (buffer) {
- if (size < used) {
- used = -ERANGE;
- break;
- }
- memcpy(buffer, xattr->name, len);
- buffer += len;
- }
- }
- spin_unlock(&info->lock);
-
- return used;
+ struct shmem_inode_info *info = SHMEM_I(dentry->d_inode);
+ return simple_xattr_list(&info->xattrs, buffer, size);
}
#endif /* CONFIG_TMPFS_XATTR */
diff --git a/mm/slab.c b/mm/slab.c
index 811af03a14ef..11339110271e 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -900,7 +900,7 @@ static void __cpuinit start_cpu_timer(int cpu)
*/
if (keventd_up() && reap_work->work.func == NULL) {
init_reap_node(cpu);
- INIT_DELAYED_WORK_DEFERRABLE(reap_work, cache_reap);
+ INIT_DEFERRABLE_WORK(reap_work, cache_reap);
schedule_delayed_work_on(cpu, reap_work,
__round_jiffies_relative(HZ, cpu));
}
@@ -983,7 +983,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac,
}
/* The caller cannot use PFMEMALLOC objects, find another one */
- for (i = 1; i < ac->avail; i++) {
+ for (i = 0; i < ac->avail; i++) {
/* If a !PFMEMALLOC object is found, swap them */
if (!is_obj_pfmemalloc(ac->entry[i])) {
objp = ac->entry[i];
@@ -1000,7 +1000,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac,
l3 = cachep->nodelists[numa_mem_id()];
if (!list_empty(&l3->slabs_free) && force_refill) {
struct slab *slabp = virt_to_slab(objp);
- ClearPageSlabPfmemalloc(virt_to_page(slabp->s_mem));
+ ClearPageSlabPfmemalloc(virt_to_head_page(slabp->s_mem));
clear_obj_pfmemalloc(&objp);
recheck_pfmemalloc_active(cachep, ac);
return objp;
@@ -1032,7 +1032,7 @@ static void *__ac_put_obj(struct kmem_cache *cachep, struct array_cache *ac,
{
if (unlikely(pfmemalloc_active)) {
/* Some pfmemalloc slabs exist, check if this is one */
- struct page *page = virt_to_page(objp);
+ struct page *page = virt_to_head_page(objp);
if (PageSlabPfmemalloc(page))
set_obj_pfmemalloc(&objp);
}
diff --git a/mm/slub.c b/mm/slub.c
index 8f78e2577031..2fdd96f9e998 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1524,12 +1524,13 @@ static inline void *acquire_slab(struct kmem_cache *s,
}
static int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain);
+static inline bool pfmemalloc_match(struct page *page, gfp_t gfpflags);
/*
* Try to allocate a partial slab from a specific node.
*/
-static void *get_partial_node(struct kmem_cache *s,
- struct kmem_cache_node *n, struct kmem_cache_cpu *c)
+static void *get_partial_node(struct kmem_cache *s, struct kmem_cache_node *n,
+ struct kmem_cache_cpu *c, gfp_t flags)
{
struct page *page, *page2;
void *object = NULL;
@@ -1545,9 +1546,13 @@ static void *get_partial_node(struct kmem_cache *s,
spin_lock(&n->list_lock);
list_for_each_entry_safe(page, page2, &n->partial, lru) {
- void *t = acquire_slab(s, n, page, object == NULL);
+ void *t;
int available;
+ if (!pfmemalloc_match(page, flags))
+ continue;
+
+ t = acquire_slab(s, n, page, object == NULL);
if (!t)
break;
@@ -1614,7 +1619,7 @@ static void *get_any_partial(struct kmem_cache *s, gfp_t flags,
if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
n->nr_partial > s->min_partial) {
- object = get_partial_node(s, n, c);
+ object = get_partial_node(s, n, c, flags);
if (object) {
/*
* Return the object even if
@@ -1643,7 +1648,7 @@ static void *get_partial(struct kmem_cache *s, gfp_t flags, int node,
void *object;
int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
- object = get_partial_node(s, get_node(s, searchnode), c);
+ object = get_partial_node(s, get_node(s, searchnode), c, flags);
if (object || node != NUMA_NO_NODE)
return object;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 8d01243d9560..99b434b674c0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3102,6 +3102,7 @@ int kswapd_run(int nid)
/* failure at boot is fatal */
BUG_ON(system_state == SYSTEM_BOOTING);
printk("Failed to start kswapd on node %d\n",nid);
+ pgdat->kswapd = NULL;
ret = -1;
}
return ret;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index df7a6748231d..b3e3b9d525d0 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1157,7 +1157,7 @@ static void __cpuinit start_cpu_timer(int cpu)
{
struct delayed_work *work = &per_cpu(vmstat_work, cpu);
- INIT_DELAYED_WORK_DEFERRABLE(work, vmstat_update);
+ INIT_DEFERRABLE_WORK(work, vmstat_update);
schedule_delayed_work_on(cpu, work, __round_jiffies_relative(HZ, cpu));
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-08 08:47:47 +0300