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-rw-r--r--mm/slab_common.c44
1 files changed, 29 insertions, 15 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 406944207b61..e03dd6f2a272 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -240,7 +240,7 @@ struct kmem_cache *find_mergeable(size_t size, size_t align,
size = ALIGN(size, align);
flags = kmem_cache_flags(size, flags, name, NULL);
- list_for_each_entry(s, &slab_caches, list) {
+ list_for_each_entry_reverse(s, &slab_caches, list) {
if (slab_unmergeable(s))
continue;
@@ -259,6 +259,10 @@ struct kmem_cache *find_mergeable(size_t size, size_t align,
if (s->size - size >= sizeof(void *))
continue;
+ if (IS_ENABLED(CONFIG_SLAB) && align &&
+ (align > s->align || s->align % align))
+ continue;
+
return s;
}
return NULL;
@@ -807,7 +811,7 @@ EXPORT_SYMBOL(kmalloc_order_trace);
#define SLABINFO_RIGHTS S_IRUSR
#endif
-void print_slabinfo_header(struct seq_file *m)
+static void print_slabinfo_header(struct seq_file *m)
{
/*
* Output format version, so at least we can change it
@@ -830,14 +834,9 @@ void print_slabinfo_header(struct seq_file *m)
seq_putc(m, '\n');
}
-static void *s_start(struct seq_file *m, loff_t *pos)
+void *slab_start(struct seq_file *m, loff_t *pos)
{
- loff_t n = *pos;
-
mutex_lock(&slab_mutex);
- if (!n)
- print_slabinfo_header(m);
-
return seq_list_start(&slab_caches, *pos);
}
@@ -877,7 +876,7 @@ memcg_accumulate_slabinfo(struct kmem_cache *s, struct slabinfo *info)
}
}
-int cache_show(struct kmem_cache *s, struct seq_file *m)
+static void cache_show(struct kmem_cache *s, struct seq_file *m)
{
struct slabinfo sinfo;
@@ -896,17 +895,32 @@ int cache_show(struct kmem_cache *s, struct seq_file *m)
sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
slabinfo_show_stats(m, s);
seq_putc(m, '\n');
+}
+
+static int slab_show(struct seq_file *m, void *p)
+{
+ struct kmem_cache *s = list_entry(p, struct kmem_cache, list);
+
+ if (p == slab_caches.next)
+ print_slabinfo_header(m);
+ if (is_root_cache(s))
+ cache_show(s, m);
return 0;
}
-static int s_show(struct seq_file *m, void *p)
+#ifdef CONFIG_MEMCG_KMEM
+int memcg_slab_show(struct seq_file *m, void *p)
{
struct kmem_cache *s = list_entry(p, struct kmem_cache, list);
+ struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
- if (!is_root_cache(s))
- return 0;
- return cache_show(s, m);
+ if (p == slab_caches.next)
+ print_slabinfo_header(m);
+ if (!is_root_cache(s) && s->memcg_params->memcg == memcg)
+ cache_show(s, m);
+ return 0;
}
+#endif
/*
* slabinfo_op - iterator that generates /proc/slabinfo
@@ -922,10 +936,10 @@ static int s_show(struct seq_file *m, void *p)
* + further values on SMP and with statistics enabled
*/
static const struct seq_operations slabinfo_op = {
- .start = s_start,
+ .start = slab_start,
.next = slab_next,
.stop = slab_stop,
- .show = s_show,
+ .show = slab_show,
};
static int slabinfo_open(struct inode *inode, struct file *file)