Merge tag 'fbdev-3.12-omap-legacy-removal' of git://git.kernel.org/pub/scm/linux...

[firefly-linux-kernel-4.4.55.git] / mm / slab_common.c

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 68518eb6722953e23621849ad77cc70d4ff6d322..538bade6df7dc2a3f27c9ad5ac5f0efc8a6d08bc 100644 (file)
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -373,8 +373,10 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
 {
        int index;
 
-       if (WARN_ON_ONCE(size > KMALLOC_MAX_SIZE))
+       if (size > KMALLOC_MAX_SIZE) {
+               WARN_ON_ONCE(!(flags & __GFP_NOWARN));
                return NULL;
+       }
 
        if (size <= 192) {
                if (!size)
@@ -446,18 +448,18 @@ void __init create_kmalloc_caches(unsigned long flags)
                if (!kmalloc_caches[i]) {
                        kmalloc_caches[i] = create_kmalloc_cache(NULL,
                                                        1 << i, flags);
+               }
 
-                       /*
-                        * Caches that are not of the two-to-the-power-of size.
-                        * These have to be created immediately after the
-                        * earlier power of two caches
-                        */
-                       if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1] && i == 6)
-                               kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, flags);
+               /*
+                * Caches that are not of the two-to-the-power-of size.
+                * These have to be created immediately after the
+                * earlier power of two caches
+                */
+               if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1] && i == 6)
+                       kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, flags);
 
-                       if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[2] && i == 7)
-                               kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, flags);
-               }
+               if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[2] && i == 7)
+                       kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, flags);
        }
 
        /* Kmalloc array is now usable */
@@ -495,6 +497,13 @@ void __init create_kmalloc_caches(unsigned long flags)
 
 
 #ifdef CONFIG_SLABINFO
+
+#ifdef CONFIG_SLAB
+#define SLABINFO_RIGHTS (S_IWUSR | S_IRUSR)
+#else
+#define SLABINFO_RIGHTS S_IRUSR
+#endif
+
 void print_slabinfo_header(struct seq_file *m)
 {
        /*
@@ -529,12 +538,12 @@ static void *s_start(struct seq_file *m, loff_t *pos)
        return seq_list_start(&slab_caches, *pos);
 }
 
-void *s_next(struct seq_file *m, void *p, loff_t *pos)
+void *slab_next(struct seq_file *m, void *p, loff_t *pos)
 {
        return seq_list_next(p, &slab_caches, pos);
 }
 
-void s_stop(struct seq_file *m, void *p)
+void slab_stop(struct seq_file *m, void *p)
 {
        mutex_unlock(&slab_mutex);
 }
@@ -611,8 +620,8 @@ static int s_show(struct seq_file *m, void *p)
  */
 static const struct seq_operations slabinfo_op = {
        .start = s_start,
-       .next = s_next,
-       .stop = s_stop,
+       .next = slab_next,
+       .stop = slab_stop,
        .show = s_show,
 };
 
@@ -631,7 +640,8 @@ static const struct file_operations proc_slabinfo_operations = {
 
 static int __init slab_proc_init(void)
 {
-       proc_create("slabinfo", S_IRUSR, NULL, &proc_slabinfo_operations);
+       proc_create("slabinfo", SLABINFO_RIGHTS, NULL,
+                                               &proc_slabinfo_operations);
        return 0;
 }
 module_init(slab_proc_init);