ASoC: rt5640: Add RL6231 class device shared support for RT5640, RT5645 and RT5651

[deliverable/linux.git] / fs / mbcache.c

diff --git a/fs/mbcache.c b/fs/mbcache.c
index 786ecab81c99c5c4765f8d976c32a1d4029b9179..bf166e388f0d4cb8b8826698df51fe759aa6f99f 100644 (file)
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -99,6 +99,7 @@
 
 static DECLARE_WAIT_QUEUE_HEAD(mb_cache_queue);
 static struct blockgroup_lock *mb_cache_bg_lock;
+static struct kmem_cache *mb_cache_kmem_cache;
 
 MODULE_AUTHOR("Andreas Gruenbacher <a.gruenbacher@computer.org>");
 MODULE_DESCRIPTION("Meta block cache (for extended attributes)");
@@ -351,11 +352,14 @@ mb_cache_create(const char *name, int bucket_bits)
                goto fail;
        for (n=0; n<bucket_count; n++)
                INIT_HLIST_BL_HEAD(&cache->c_index_hash[n]);
-       cache->c_entry_cache = kmem_cache_create(name,
-               sizeof(struct mb_cache_entry), 0,
-               SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL);
-       if (!cache->c_entry_cache)
-               goto fail2;
+       if (!mb_cache_kmem_cache) {
+               mb_cache_kmem_cache = kmem_cache_create(name,
+                       sizeof(struct mb_cache_entry), 0,
+                       SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL);
+               if (!mb_cache_kmem_cache)
+                       goto fail2;
+       }
+       cache->c_entry_cache = mb_cache_kmem_cache;
 
        /*
         * Set an upper limit on the number of cache entries so that the hash
@@ -476,6 +480,10 @@ mb_cache_destroy(struct mb_cache *cache)
                          atomic_read(&cache->c_entry_count));
        }
 
+       if (list_empty(&mb_cache_list)) {
+               kmem_cache_destroy(mb_cache_kmem_cache);
+               mb_cache_kmem_cache = NULL;
+       }
        kfree(cache->c_index_hash);
        kfree(cache->c_block_hash);
        kfree(cache);