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-rw-r--r--mm/cleancache.c10
-rw-r--r--mm/cma_debug.c25
-rw-r--r--mm/compaction.c2
-rw-r--r--mm/dmapool.c2
-rw-r--r--mm/failslab.c2
-rw-r--r--mm/frontswap.c11
-rw-r--r--mm/gup_benchmark.c2
-rw-r--r--mm/huge_memory.c4
-rw-r--r--mm/hugetlb.c3
-rw-r--r--mm/ksm.c14
-rw-r--r--mm/memblock.c9
-rw-r--r--mm/memcontrol.c10
-rw-r--r--mm/mremap.c4
-rw-r--r--mm/oom_kill.c2
-rw-r--r--mm/page_alloc.c2
-rw-r--r--mm/page_idle.c2
-rw-r--r--mm/page_owner.c4
-rw-r--r--mm/percpu-stats.c2
-rw-r--r--mm/shmem.c9
-rw-r--r--mm/slab.c3
-rw-r--r--mm/slab_common.c37
-rw-r--r--mm/slub.c19
-rw-r--r--mm/swap_slots.c4
-rw-r--r--mm/swap_state.c2
-rw-r--r--mm/swapfile.c7
-rw-r--r--mm/vmalloc.c4
-rw-r--r--mm/zsmalloc.c5
-rw-r--r--mm/zswap.c38
28 files changed, 140 insertions, 98 deletions
diff --git a/mm/cleancache.c b/mm/cleancache.c
index 126548b5a292..2bf12da9baa0 100644
--- a/mm/cleancache.c
+++ b/mm/cleancache.c
@@ -307,12 +307,10 @@ static int __init init_cleancache(void)
struct dentry *root = debugfs_create_dir("cleancache", NULL);
if (root == NULL)
return -ENXIO;
- debugfs_create_u64("succ_gets", S_IRUGO, root, &cleancache_succ_gets);
- debugfs_create_u64("failed_gets", S_IRUGO,
- root, &cleancache_failed_gets);
- debugfs_create_u64("puts", S_IRUGO, root, &cleancache_puts);
- debugfs_create_u64("invalidates", S_IRUGO,
- root, &cleancache_invalidates);
+ debugfs_create_u64("succ_gets", 0444, root, &cleancache_succ_gets);
+ debugfs_create_u64("failed_gets", 0444, root, &cleancache_failed_gets);
+ debugfs_create_u64("puts", 0444, root, &cleancache_puts);
+ debugfs_create_u64("invalidates", 0444, root, &cleancache_invalidates);
#endif
return 0;
}
diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index 275df8b5b22e..f23467291cfb 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -172,23 +172,18 @@ static void cma_debugfs_add_one(struct cma *cma, int idx)
tmp = debugfs_create_dir(name, cma_debugfs_root);
- debugfs_create_file("alloc", S_IWUSR, tmp, cma,
- &cma_alloc_fops);
-
- debugfs_create_file("free", S_IWUSR, tmp, cma,
- &cma_free_fops);
-
- debugfs_create_file("base_pfn", S_IRUGO, tmp,
- &cma->base_pfn, &cma_debugfs_fops);
- debugfs_create_file("count", S_IRUGO, tmp,
- &cma->count, &cma_debugfs_fops);
- debugfs_create_file("order_per_bit", S_IRUGO, tmp,
- &cma->order_per_bit, &cma_debugfs_fops);
- debugfs_create_file("used", S_IRUGO, tmp, cma, &cma_used_fops);
- debugfs_create_file("maxchunk", S_IRUGO, tmp, cma, &cma_maxchunk_fops);
+ debugfs_create_file("alloc", 0200, tmp, cma, &cma_alloc_fops);
+ debugfs_create_file("free", 0200, tmp, cma, &cma_free_fops);
+ debugfs_create_file("base_pfn", 0444, tmp,
+ &cma->base_pfn, &cma_debugfs_fops);
+ debugfs_create_file("count", 0444, tmp, &cma->count, &cma_debugfs_fops);
+ debugfs_create_file("order_per_bit", 0444, tmp,
+ &cma->order_per_bit, &cma_debugfs_fops);
+ debugfs_create_file("used", 0444, tmp, cma, &cma_used_fops);
+ debugfs_create_file("maxchunk", 0444, tmp, cma, &cma_maxchunk_fops);
u32s = DIV_ROUND_UP(cma_bitmap_maxno(cma), BITS_PER_BYTE * sizeof(u32));
- debugfs_create_u32_array("bitmap", S_IRUGO, tmp, (u32*)cma->bitmap, u32s);
+ debugfs_create_u32_array("bitmap", 0444, tmp, (u32 *)cma->bitmap, u32s);
}
static int __init cma_debugfs_init(void)
diff --git a/mm/compaction.c b/mm/compaction.c
index 29bd1df18b98..faca45ebe62d 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1899,7 +1899,7 @@ static ssize_t sysfs_compact_node(struct device *dev,
return count;
}
-static DEVICE_ATTR(compact, S_IWUSR, NULL, sysfs_compact_node);
+static DEVICE_ATTR(compact, 0200, NULL, sysfs_compact_node);
int compaction_register_node(struct node *node)
{
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 4d90a64b2fdc..6d4b97e7e9e9 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -105,7 +105,7 @@ show_pools(struct device *dev, struct device_attribute *attr, char *buf)
return PAGE_SIZE - size;
}
-static DEVICE_ATTR(pools, S_IRUGO, show_pools, NULL);
+static DEVICE_ATTR(pools, 0444, show_pools, NULL);
/**
* dma_pool_create - Creates a pool of consistent memory blocks, for dma.
diff --git a/mm/failslab.c b/mm/failslab.c
index 1f2f248e3601..b135ebb88b6f 100644
--- a/mm/failslab.c
+++ b/mm/failslab.c
@@ -42,7 +42,7 @@ __setup("failslab=", setup_failslab);
static int __init failslab_debugfs_init(void)
{
struct dentry *dir;
- umode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
+ umode_t mode = S_IFREG | 0600;
dir = fault_create_debugfs_attr("failslab", NULL, &failslab.attr);
if (IS_ERR(dir))
diff --git a/mm/frontswap.c b/mm/frontswap.c
index 4f5476a0f955..157e5bf63504 100644
--- a/mm/frontswap.c
+++ b/mm/frontswap.c
@@ -486,12 +486,11 @@ static int __init init_frontswap(void)
struct dentry *root = debugfs_create_dir("frontswap", NULL);
if (root == NULL)
return -ENXIO;
- debugfs_create_u64("loads", S_IRUGO, root, &frontswap_loads);
- debugfs_create_u64("succ_stores", S_IRUGO, root, &frontswap_succ_stores);
- debugfs_create_u64("failed_stores", S_IRUGO, root,
- &frontswap_failed_stores);
- debugfs_create_u64("invalidates", S_IRUGO,
- root, &frontswap_invalidates);
+ debugfs_create_u64("loads", 0444, root, &frontswap_loads);
+ debugfs_create_u64("succ_stores", 0444, root, &frontswap_succ_stores);
+ debugfs_create_u64("failed_stores", 0444, root,
+ &frontswap_failed_stores);
+ debugfs_create_u64("invalidates", 0444, root, &frontswap_invalidates);
#endif
return 0;
}
diff --git a/mm/gup_benchmark.c b/mm/gup_benchmark.c
index 0f44759486e2..6a473709e9b6 100644
--- a/mm/gup_benchmark.c
+++ b/mm/gup_benchmark.c
@@ -23,7 +23,7 @@ static int __gup_benchmark_ioctl(unsigned int cmd,
struct page **pages;
nr_pages = gup->size / PAGE_SIZE;
- pages = kvzalloc(sizeof(void *) * nr_pages, GFP_KERNEL);
+ pages = kvcalloc(nr_pages, sizeof(void *), GFP_KERNEL);
if (!pages)
return -ENOMEM;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index ba8fdc0b6e7f..1cd7c1a57a14 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1131,8 +1131,8 @@ static int do_huge_pmd_wp_page_fallback(struct vm_fault *vmf, pmd_t orig_pmd,
unsigned long mmun_start; /* For mmu_notifiers */
unsigned long mmun_end; /* For mmu_notifiers */
- pages = kmalloc(sizeof(struct page *) * HPAGE_PMD_NR,
- GFP_KERNEL);
+ pages = kmalloc_array(HPAGE_PMD_NR, sizeof(struct page *),
+ GFP_KERNEL);
if (unlikely(!pages)) {
ret |= VM_FAULT_OOM;
goto out;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 696befffe6f7..3612fbb32e9d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2798,7 +2798,8 @@ static int __init hugetlb_init(void)
num_fault_mutexes = 1;
#endif
hugetlb_fault_mutex_table =
- kmalloc(sizeof(struct mutex) * num_fault_mutexes, GFP_KERNEL);
+ kmalloc_array(num_fault_mutexes, sizeof(struct mutex),
+ GFP_KERNEL);
BUG_ON(!hugetlb_fault_mutex_table);
for (i = 0; i < num_fault_mutexes; i++)
diff --git a/mm/ksm.c b/mm/ksm.c
index e2d2886fb1df..a6d43cf9a982 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -216,6 +216,8 @@ struct rmap_item {
#define SEQNR_MASK 0x0ff /* low bits of unstable tree seqnr */
#define UNSTABLE_FLAG 0x100 /* is a node of the unstable tree */
#define STABLE_FLAG 0x200 /* is listed from the stable tree */
+#define KSM_FLAG_MASK (SEQNR_MASK|UNSTABLE_FLAG|STABLE_FLAG)
+ /* to mask all the flags */
/* The stable and unstable tree heads */
static struct rb_root one_stable_tree[1] = { RB_ROOT };
@@ -2598,10 +2600,15 @@ again:
anon_vma_lock_read(anon_vma);
anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
0, ULONG_MAX) {
+ unsigned long addr;
+
cond_resched();
vma = vmac->vma;
- if (rmap_item->address < vma->vm_start ||
- rmap_item->address >= vma->vm_end)
+
+ /* Ignore the stable/unstable/sqnr flags */
+ addr = rmap_item->address & ~KSM_FLAG_MASK;
+
+ if (addr < vma->vm_start || addr >= vma->vm_end)
continue;
/*
* Initially we examine only the vma which covers this
@@ -2615,8 +2622,7 @@ again:
if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg))
continue;
- if (!rwc->rmap_one(page, vma,
- rmap_item->address, rwc->arg)) {
+ if (!rwc->rmap_one(page, vma, addr, rwc->arg)) {
anon_vma_unlock_read(anon_vma);
return;
}
diff --git a/mm/memblock.c b/mm/memblock.c
index 93ad42bc8a73..03d48d8835ba 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1808,10 +1808,13 @@ static int __init memblock_init_debugfs(void)
struct dentry *root = debugfs_create_dir("memblock", NULL);
if (!root)
return -ENXIO;
- debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops);
- debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops);
+ debugfs_create_file("memory", 0444, root,
+ &memblock.memory, &memblock_debug_fops);
+ debugfs_create_file("reserved", 0444, root,
+ &memblock.reserved, &memblock_debug_fops);
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
- debugfs_create_file("physmem", S_IRUGO, root, &memblock.physmem, &memblock_debug_fops);
+ debugfs_create_file("physmem", 0444, root,
+ &memblock.physmem, &memblock_debug_fops);
#endif
return 0;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c1e64d60ed02..e6f0d5ef320a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3550,7 +3550,8 @@ static int mem_cgroup_oom_control_read(struct seq_file *sf, void *v)
seq_printf(sf, "oom_kill_disable %d\n", memcg->oom_kill_disable);
seq_printf(sf, "under_oom %d\n", (bool)memcg->under_oom);
- seq_printf(sf, "oom_kill %lu\n", memcg_sum_events(memcg, OOM_KILL));
+ seq_printf(sf, "oom_kill %lu\n",
+ atomic_long_read(&memcg->memory_events[MEMCG_OOM_KILL]));
return 0;
}
@@ -5239,7 +5240,8 @@ static int memory_events_show(struct seq_file *m, void *v)
atomic_long_read(&memcg->memory_events[MEMCG_MAX]));
seq_printf(m, "oom %lu\n",
atomic_long_read(&memcg->memory_events[MEMCG_OOM]));
- seq_printf(m, "oom_kill %lu\n", memcg_sum_events(memcg, OOM_KILL));
+ seq_printf(m, "oom_kill %lu\n",
+ atomic_long_read(&memcg->memory_events[MEMCG_OOM_KILL]));
return 0;
}
@@ -5480,6 +5482,10 @@ enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root,
elow = memcg->memory.low;
parent = parent_mem_cgroup(memcg);
+ /* No parent means a non-hierarchical mode on v1 memcg */
+ if (!parent)
+ return MEMCG_PROT_NONE;
+
if (parent == root)
goto exit;
diff --git a/mm/mremap.c b/mm/mremap.c
index 049470aa1e3e..5c2e18505f75 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -191,8 +191,6 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
drop_rmap_locks(vma);
}
-#define LATENCY_LIMIT (64 * PAGE_SIZE)
-
unsigned long move_page_tables(struct vm_area_struct *vma,
unsigned long old_addr, struct vm_area_struct *new_vma,
unsigned long new_addr, unsigned long len,
@@ -247,8 +245,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
next = (new_addr + PMD_SIZE) & PMD_MASK;
if (extent > next - new_addr)
extent = next - new_addr;
- if (extent > LATENCY_LIMIT)
- extent = LATENCY_LIMIT;
move_ptes(vma, old_pmd, old_addr, old_addr + extent, new_vma,
new_pmd, new_addr, need_rmap_locks, &need_flush);
}
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 6694348b27e9..84081e77bc51 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -913,7 +913,7 @@ static void oom_kill_process(struct oom_control *oc, const char *message)
/* Raise event before sending signal: task reaper must see this */
count_vm_event(OOM_KILL);
- count_memcg_event_mm(mm, OOM_KILL);
+ memcg_memory_event_mm(mm, MEMCG_OOM_KILL);
/*
* We should send SIGKILL before granting access to memory reserves
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 07b3c23762ad..1521100f1e63 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3061,7 +3061,7 @@ static bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
static int __init fail_page_alloc_debugfs(void)
{
- umode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
+ umode_t mode = S_IFREG | 0600;
struct dentry *dir;
dir = fault_create_debugfs_attr("fail_page_alloc", NULL,
diff --git a/mm/page_idle.c b/mm/page_idle.c
index e412a63b2b74..6302bc62c27d 100644
--- a/mm/page_idle.c
+++ b/mm/page_idle.c
@@ -201,7 +201,7 @@ static ssize_t page_idle_bitmap_write(struct file *file, struct kobject *kobj,
}
static struct bin_attribute page_idle_bitmap_attr =
- __BIN_ATTR(bitmap, S_IRUSR | S_IWUSR,
+ __BIN_ATTR(bitmap, 0600,
page_idle_bitmap_read, page_idle_bitmap_write, 0);
static struct bin_attribute *page_idle_bin_attrs[] = {
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 75d21a2259b3..d80adfe702d3 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -631,8 +631,8 @@ static int __init pageowner_init(void)
return 0;
}
- dentry = debugfs_create_file("page_owner", S_IRUSR, NULL,
- NULL, &proc_page_owner_operations);
+ dentry = debugfs_create_file("page_owner", 0400, NULL,
+ NULL, &proc_page_owner_operations);
return PTR_ERR_OR_ZERO(dentry);
}
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index 063ff60ecd90..b5fdd43b60c9 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -144,7 +144,7 @@ alloc_buffer:
spin_unlock_irq(&pcpu_lock);
/* there can be at most this many free and allocated fragments */
- buffer = vmalloc((2 * max_nr_alloc + 1) * sizeof(int));
+ buffer = vmalloc(array_size(sizeof(int), (2 * max_nr_alloc + 1)));
if (!buffer)
return -ENOMEM;
diff --git a/mm/shmem.c b/mm/shmem.c
index e9a7ac74823d..2cab84403055 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3013,7 +3013,8 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
if (len > PAGE_SIZE)
return -ENAMETOOLONG;
- inode = shmem_get_inode(dir->i_sb, dir, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
+ inode = shmem_get_inode(dir->i_sb, dir, S_IFLNK | 0777, 0,
+ VM_NORESERVE);
if (!inode)
return -ENOSPC;
@@ -3445,7 +3446,7 @@ static int shmem_show_options(struct seq_file *seq, struct dentry *root)
sbinfo->max_blocks << (PAGE_SHIFT - 10));
if (sbinfo->max_inodes != shmem_default_max_inodes())
seq_printf(seq, ",nr_inodes=%lu", sbinfo->max_inodes);
- if (sbinfo->mode != (S_IRWXUGO | S_ISVTX))
+ if (sbinfo->mode != (0777 | S_ISVTX))
seq_printf(seq, ",mode=%03ho", sbinfo->mode);
if (!uid_eq(sbinfo->uid, GLOBAL_ROOT_UID))
seq_printf(seq, ",uid=%u",
@@ -3486,7 +3487,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent)
if (!sbinfo)
return -ENOMEM;
- sbinfo->mode = S_IRWXUGO | S_ISVTX;
+ sbinfo->mode = 0777 | S_ISVTX;
sbinfo->uid = current_fsuid();
sbinfo->gid = current_fsgid();
sb->s_fs_info = sbinfo;
@@ -3929,7 +3930,7 @@ static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, l
d_set_d_op(path.dentry, &anon_ops);
res = ERR_PTR(-ENOSPC);
- inode = shmem_get_inode(sb, NULL, S_IFREG | S_IRWXUGO, 0, flags);
+ inode = shmem_get_inode(sb, NULL, S_IFREG | 0777, 0, flags);
if (!inode)
goto put_memory;
diff --git a/mm/slab.c b/mm/slab.c
index 36688f6c87eb..aa76a70e087e 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -4338,7 +4338,8 @@ static int leaks_show(struct seq_file *m, void *p)
if (x[0] == x[1]) {
/* Increase the buffer size */
mutex_unlock(&slab_mutex);
- m->private = kzalloc(x[0] * 4 * sizeof(unsigned long), GFP_KERNEL);
+ m->private = kcalloc(x[0] * 4, sizeof(unsigned long),
+ GFP_KERNEL);
if (!m->private) {
/* Too bad, we are really out */
m->private = x;
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 98dcdc352062..890b1f04a03a 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -136,6 +136,7 @@ void slab_init_memcg_params(struct kmem_cache *s)
s->memcg_params.root_cache = NULL;
RCU_INIT_POINTER(s->memcg_params.memcg_caches, NULL);
INIT_LIST_HEAD(&s->memcg_params.children);
+ s->memcg_params.dying = false;
}
static int init_memcg_params(struct kmem_cache *s,
@@ -608,7 +609,7 @@ void memcg_create_kmem_cache(struct mem_cgroup *memcg,
* The memory cgroup could have been offlined while the cache
* creation work was pending.
*/
- if (memcg->kmem_state != KMEM_ONLINE)
+ if (memcg->kmem_state != KMEM_ONLINE || root_cache->memcg_params.dying)
goto out_unlock;
idx = memcg_cache_id(memcg);
@@ -712,6 +713,9 @@ void slab_deactivate_memcg_cache_rcu_sched(struct kmem_cache *s,
WARN_ON_ONCE(s->memcg_params.deact_fn))
return;
+ if (s->memcg_params.root_cache->memcg_params.dying)
+ return;
+
/* pin memcg so that @s doesn't get destroyed in the middle */
css_get(&s->memcg_params.memcg->css);
@@ -823,11 +827,36 @@ static int shutdown_memcg_caches(struct kmem_cache *s)
return -EBUSY;
return 0;
}
+
+static void flush_memcg_workqueue(struct kmem_cache *s)
+{
+ mutex_lock(&slab_mutex);
+ s->memcg_params.dying = true;
+ mutex_unlock(&slab_mutex);
+
+ /*
+ * SLUB deactivates the kmem_caches through call_rcu_sched. Make
+ * sure all registered rcu callbacks have been invoked.
+ */
+ if (IS_ENABLED(CONFIG_SLUB))
+ rcu_barrier_sched();
+
+ /*
+ * SLAB and SLUB create memcg kmem_caches through workqueue and SLUB
+ * deactivates the memcg kmem_caches through workqueue. Make sure all
+ * previous workitems on workqueue are processed.
+ */
+ flush_workqueue(memcg_kmem_cache_wq);
+}
#else
static inline int shutdown_memcg_caches(struct kmem_cache *s)
{
return 0;
}
+
+static inline void flush_memcg_workqueue(struct kmem_cache *s)
+{
+}
#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
void slab_kmem_cache_release(struct kmem_cache *s)
@@ -845,6 +874,8 @@ void kmem_cache_destroy(struct kmem_cache *s)
if (unlikely(!s))
return;
+ flush_memcg_workqueue(s);
+
get_online_cpus();
get_online_mems();
@@ -1212,9 +1243,9 @@ void cache_random_seq_destroy(struct kmem_cache *cachep)
#if defined(CONFIG_SLAB) || defined(CONFIG_SLUB_DEBUG)
#ifdef CONFIG_SLAB
-#define SLABINFO_RIGHTS (S_IWUSR | S_IRUSR)
+#define SLABINFO_RIGHTS (0600)
#else
-#define SLABINFO_RIGHTS S_IRUSR
+#define SLABINFO_RIGHTS (0400)
#endif
static void print_slabinfo_header(struct seq_file *m)
diff --git a/mm/slub.c b/mm/slub.c
index 15505479c3ab..a3b8467c14af 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3623,8 +3623,9 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
#ifdef CONFIG_SLUB_DEBUG
void *addr = page_address(page);
void *p;
- unsigned long *map = kzalloc(BITS_TO_LONGS(page->objects) *
- sizeof(long), GFP_ATOMIC);
+ unsigned long *map = kcalloc(BITS_TO_LONGS(page->objects),
+ sizeof(long),
+ GFP_ATOMIC);
if (!map)
return;
slab_err(s, page, text, s->name);
@@ -4412,8 +4413,9 @@ static long validate_slab_cache(struct kmem_cache *s)
{
int node;
unsigned long count = 0;
- unsigned long *map = kmalloc(BITS_TO_LONGS(oo_objects(s->max)) *
- sizeof(unsigned long), GFP_KERNEL);
+ unsigned long *map = kmalloc_array(BITS_TO_LONGS(oo_objects(s->max)),
+ sizeof(unsigned long),
+ GFP_KERNEL);
struct kmem_cache_node *n;
if (!map)
@@ -4573,8 +4575,9 @@ static int list_locations(struct kmem_cache *s, char *buf,
unsigned long i;
struct loc_track t = { 0, 0, NULL };
int node;
- unsigned long *map = kmalloc(BITS_TO_LONGS(oo_objects(s->max)) *
- sizeof(unsigned long), GFP_KERNEL);
+ unsigned long *map = kmalloc_array(BITS_TO_LONGS(oo_objects(s->max)),
+ sizeof(unsigned long),
+ GFP_KERNEL);
struct kmem_cache_node *n;
if (!map || !alloc_loc_track(&t, PAGE_SIZE / sizeof(struct location),
@@ -4750,7 +4753,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
int x;
unsigned long *nodes;
- nodes = kzalloc(sizeof(unsigned long) * nr_node_ids, GFP_KERNEL);
+ nodes = kcalloc(nr_node_ids, sizeof(unsigned long), GFP_KERNEL);
if (!nodes)
return -ENOMEM;
@@ -5293,7 +5296,7 @@ static int show_stat(struct kmem_cache *s, char *buf, enum stat_item si)
unsigned long sum = 0;
int cpu;
int len;
- int *data = kmalloc(nr_cpu_ids * sizeof(int), GFP_KERNEL);
+ int *data = kmalloc_array(nr_cpu_ids, sizeof(int), GFP_KERNEL);
if (!data)
return -ENOMEM;
diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index f51ac051c0c9..a791411fed71 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -122,12 +122,12 @@ static int alloc_swap_slot_cache(unsigned int cpu)
* as kvzalloc could trigger reclaim and get_swap_page,
* which can lock swap_slots_cache_mutex.
*/
- slots = kvzalloc(sizeof(swp_entry_t) * SWAP_SLOTS_CACHE_SIZE,
+ slots = kvcalloc(SWAP_SLOTS_CACHE_SIZE, sizeof(swp_entry_t),
GFP_KERNEL);
if (!slots)
return -ENOMEM;
- slots_ret = kvzalloc(sizeof(swp_entry_t) * SWAP_SLOTS_CACHE_SIZE,
+ slots_ret = kvcalloc(SWAP_SLOTS_CACHE_SIZE, sizeof(swp_entry_t),
GFP_KERNEL);
if (!slots_ret) {
kvfree(slots);
diff --git a/mm/swap_state.c b/mm/swap_state.c
index ab8e59cd18ea..ecee9c6c4cc1 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -620,7 +620,7 @@ int init_swap_address_space(unsigned int type, unsigned long nr_pages)
unsigned int i, nr;
nr = DIV_ROUND_UP(nr_pages, SWAP_ADDRESS_SPACE_PAGES);
- spaces = kvzalloc(sizeof(struct address_space) * nr, GFP_KERNEL);
+ spaces = kvcalloc(nr, sizeof(struct address_space), GFP_KERNEL);
if (!spaces)
return -ENOMEM;
for (i = 0; i < nr; i++) {
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 78a015fcec3b..2cc2972eedaf 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -100,7 +100,7 @@ atomic_t nr_rotate_swap = ATOMIC_INIT(0);
static inline unsigned char swap_count(unsigned char ent)
{
- return ent & ~SWAP_HAS_CACHE; /* may include SWAP_HAS_CONT flag */
+ return ent & ~SWAP_HAS_CACHE; /* may include COUNT_CONTINUED flag */
}
/* returns 1 if swap entry is freed */
@@ -3196,7 +3196,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
p->cluster_next = 1 + (prandom_u32() % p->highest_bit);
nr_cluster = DIV_ROUND_UP(maxpages, SWAPFILE_CLUSTER);
- cluster_info = kvzalloc(nr_cluster * sizeof(*cluster_info),
+ cluster_info = kvcalloc(nr_cluster, sizeof(*cluster_info),
GFP_KERNEL);
if (!cluster_info) {
error = -ENOMEM;
@@ -3233,7 +3233,8 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
}
/* frontswap enabled? set up bit-per-page map for frontswap */
if (IS_ENABLED(CONFIG_FRONTSWAP))
- frontswap_map = kvzalloc(BITS_TO_LONGS(maxpages) * sizeof(long),
+ frontswap_map = kvcalloc(BITS_TO_LONGS(maxpages),
+ sizeof(long),
GFP_KERNEL);
if (p->bdev &&(swap_flags & SWAP_FLAG_DISCARD) && swap_discardable(p)) {
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 89efac3a020e..cfea25be7754 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2741,11 +2741,11 @@ static const struct seq_operations vmalloc_op = {
static int __init proc_vmalloc_init(void)
{
if (IS_ENABLED(CONFIG_NUMA))
- proc_create_seq_private("vmallocinfo", S_IRUSR, NULL,
+ proc_create_seq_private("vmallocinfo", 0400, NULL,
&vmalloc_op,
nr_node_ids * sizeof(unsigned int), NULL);
else
- proc_create_seq("vmallocinfo", S_IRUSR, NULL, &vmalloc_op);
+ proc_create_seq("vmallocinfo", 0400, NULL, &vmalloc_op);
return 0;
}
module_init(proc_vmalloc_init);
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 61cb05dc950c..8d87e973a4f5 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -661,8 +661,9 @@ static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
}
pool->stat_dentry = entry;
- entry = debugfs_create_file("classes", S_IFREG | S_IRUGO,
- pool->stat_dentry, pool, &zs_stats_size_fops);
+ entry = debugfs_create_file("classes", S_IFREG | 0444,
+ pool->stat_dentry, pool,
+ &zs_stats_size_fops);
if (!entry) {
pr_warn("%s: debugfs file entry <%s> creation failed\n",
name, "classes");
diff --git a/mm/zswap.c b/mm/zswap.c
index 61a5c41972db..7d34e69507e3 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1256,26 +1256,26 @@ static int __init zswap_debugfs_init(void)
if (!zswap_debugfs_root)
return -ENOMEM;
- debugfs_create_u64("pool_limit_hit", S_IRUGO,
- zswap_debugfs_root, &zswap_pool_limit_hit);
- debugfs_create_u64("reject_reclaim_fail", S_IRUGO,
- zswap_debugfs_root, &zswap_reject_reclaim_fail);
- debugfs_create_u64("reject_alloc_fail", S_IRUGO,
- zswap_debugfs_root, &zswap_reject_alloc_fail);
- debugfs_create_u64("reject_kmemcache_fail", S_IRUGO,
- zswap_debugfs_root, &zswap_reject_kmemcache_fail);
- debugfs_create_u64("reject_compress_poor", S_IRUGO,
- zswap_debugfs_root, &zswap_reject_compress_poor);
- debugfs_create_u64("written_back_pages", S_IRUGO,
- zswap_debugfs_root, &zswap_written_back_pages);
- debugfs_create_u64("duplicate_entry", S_IRUGO,
- zswap_debugfs_root, &zswap_duplicate_entry);
- debugfs_create_u64("pool_total_size", S_IRUGO,
- zswap_debugfs_root, &zswap_pool_total_size);
- debugfs_create_atomic_t("stored_pages", S_IRUGO,
- zswap_debugfs_root, &zswap_stored_pages);
+ debugfs_create_u64("pool_limit_hit", 0444,
+ zswap_debugfs_root, &zswap_pool_limit_hit);
+ debugfs_create_u64("reject_reclaim_fail", 0444,
+ zswap_debugfs_root, &zswap_reject_reclaim_fail);
+ debugfs_create_u64("reject_alloc_fail", 0444,
+ zswap_debugfs_root, &zswap_reject_alloc_fail);
+ debugfs_create_u64("reject_kmemcache_fail", 0444,
+ zswap_debugfs_root, &zswap_reject_kmemcache_fail);
+ debugfs_create_u64("reject_compress_poor", 0444,
+ zswap_debugfs_root, &zswap_reject_compress_poor);
+ debugfs_create_u64("written_back_pages", 0444,
+ zswap_debugfs_root, &zswap_written_back_pages);
+ debugfs_create_u64("duplicate_entry", 0444,
+ zswap_debugfs_root, &zswap_duplicate_entry);
+ debugfs_create_u64("pool_total_size", 0444,
+ zswap_debugfs_root, &zswap_pool_total_size);
+ debugfs_create_atomic_t("stored_pages", 0444,
+ zswap_debugfs_root, &zswap_stored_pages);
debugfs_create_atomic_t("same_filled_pages", 0444,
- zswap_debugfs_root, &zswap_same_filled_pages);
+ zswap_debugfs_root, &zswap_same_filled_pages);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-09 20:38:54 +0000