mm: Remove slab destructors from kmem_cache_create().

Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 5 insertions, 7 deletions

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f290cb7cb834..f37324aee817 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1680,7 +1680,7 @@ static int jbd2_journal_create_jbd_slab(size_t slab_size)
          * boundary.
          */
         jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
-                                slab_size, slab_size, 0, NULL, NULL);
+                                slab_size, slab_size, 0, NULL);
         if (!jbd_slab[i]) {
                 printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
                 return -ENOMEM;
@@ -1723,8 +1723,7 @@ static int journal_init_jbd2_journal_head_cache(void)
                                 sizeof(struct journal_head),
                                 0,              /* offset */
                                 0,              /* flags */
-                                NULL,           /* ctor */
-                                NULL);          /* dtor */
+                                NULL);          /* ctor */
         retval = 0;
         if (jbd2_journal_head_cache == 0) {
                 retval = -ENOMEM;
@@ -2006,8 +2005,7 @@ static int __init journal_init_handle_cache(void)
                                 sizeof(handle_t),
                                 0,              /* offset */
                                 0,              /* flags */
-                                NULL,           /* ctor */
-                                NULL);          /* dtor */
+                                NULL);          /* ctor */
         if (jbd2_handle_cache == NULL) {
                 printk(KERN_EMERG "JBD: failed to create handle cache\n");
                 return -ENOMEM;
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index 28cac049a56b..01d88975e0c5 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -171,13 +171,13 @@ int __init jbd2_journal_init_revoke_caches(void)
 {
         jbd2_revoke_record_cache = kmem_cache_create("jbd2_revoke_record",
                                            sizeof(struct jbd2_revoke_record_s),
-                                           0, SLAB_HWCACHE_ALIGN, NULL, NULL);
+                                           0, SLAB_HWCACHE_ALIGN, NULL);
         if (jbd2_revoke_record_cache == 0)
                 return -ENOMEM;
 
         jbd2_revoke_table_cache = kmem_cache_create("jbd2_revoke_table",
                                            sizeof(struct jbd2_revoke_table_s),
-                                           0, 0, NULL, NULL);
+                                           0, 0, NULL);
         if (jbd2_revoke_table_cache == 0) {
                 kmem_cache_destroy(jbd2_revoke_record_cache);
                 jbd2_revoke_record_cache = NULL;