1 files changed, 6 insertions, 75 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 05a1c42e25b..fe9eb990e44 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -17,12 +17,6 @@
 #include "ctree.h"
 #include "btrfs_inode.h"
 
-/* temporary define until extent_map moves out of btrfs */
-struct kmem_cache *btrfs_cache_create(const char *name, size_t size,
-                                       unsigned long extra_flags,
-                                       void (*ctor)(void *, struct kmem_cache *,
-                                                    unsigned long));
-
 static struct kmem_cache *extent_state_cache;
 static struct kmem_cache *extent_buffer_cache;
 
@@ -58,15 +52,15 @@ struct extent_page_data {
 
 int __init extent_io_init(void)
 {
-        extent_state_cache = btrfs_cache_create("extent_state",
-                                            sizeof(struct extent_state), 0,
-                                            NULL);
+        extent_state_cache = kmem_cache_create("extent_state",
+                        sizeof(struct extent_state), 0,
+                        SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
         if (!extent_state_cache)
                 return -ENOMEM;
 
-        extent_buffer_cache = btrfs_cache_create("extent_buffers",
-                                            sizeof(struct extent_buffer), 0,
-                                            NULL);
+        extent_buffer_cache = kmem_cache_create("extent_buffers",
+                        sizeof(struct extent_buffer), 0,
+                        SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
         if (!extent_buffer_cache)
                 goto free_state_cache;
         return 0;
@@ -1407,69 +1401,6 @@ out:
         return total_bytes;
 }
 
-#if 0
-/*
- * helper function to lock both pages and extents in the tree.
- * pages must be locked first.
- */
-static int lock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
-        unsigned long index = start >> PAGE_CACHE_SHIFT;
-        unsigned long end_index = end >> PAGE_CACHE_SHIFT;
-        struct page *page;
-        int err;
-
-        while (index <= end_index) {
-                page = grab_cache_page(tree->mapping, index);
-                if (!page) {
-                        err = -ENOMEM;
-                        goto failed;
-                }
-                if (IS_ERR(page)) {
-                        err = PTR_ERR(page);
-                        goto failed;
-                }
-                index++;
-        }
-        lock_extent(tree, start, end, GFP_NOFS);
-        return 0;
-
-failed:
-        /*
-         * we failed above in getting the page at 'index', so we undo here
-         * up to but not including the page at 'index'
-         */
-        end_index = index;
-        index = start >> PAGE_CACHE_SHIFT;
-        while (index < end_index) {
-                page = find_get_page(tree->mapping, index);
-                unlock_page(page);
-                page_cache_release(page);
-                index++;
-        }
-        return err;
-}
-
-/*
- * helper function to unlock both pages and extents in the tree.
- */
-static int unlock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
-        unsigned long index = start >> PAGE_CACHE_SHIFT;
-        unsigned long end_index = end >> PAGE_CACHE_SHIFT;
-        struct page *page;
-
-        while (index <= end_index) {
-                page = find_get_page(tree->mapping, index);
-                unlock_page(page);
-                page_cache_release(page);
-                index++;
-        }
-        unlock_extent(tree, start, end, GFP_NOFS);
-        return 0;
-}
-#endif
-
 /*
  * set the private field for a given byte offset in the tree.  If there isn't
  * an extent_state there already, this does nothing.