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authorLi Zefan <lizf@cn.fujitsu.com>2011-07-14 03:17:27 +0000
committerChris Mason <chris.mason@oracle.com>2011-08-01 14:30:47 -0400
commit15de900d08bb132833c8622610ddb1be660a6018 (patch)
treee7004a2761220fcfa19b891e61e81bfcdada032c /fs
parentb9c8300c2ac354d850159f301d5b3ead13854cdd (diff)
downloadop-kernel-dev-15de900d08bb132833c8622610ddb1be660a6018.zip
op-kernel-dev-15de900d08bb132833c8622610ddb1be660a6018.tar.gz
Btrfs: remove remaining ref-cache code
Since commit f2a97a9dbd86eb1ef956bdf20e05c507b32beb96 ("btrfs: remove all unused functions"), there's no extern functions at all in ref-cache.c, so just remove the remaining dead code. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/ref-cache.c68
-rw-r--r--fs/btrfs/ref-cache.h52
2 files changed, 0 insertions, 120 deletions
diff --git a/fs/btrfs/ref-cache.c b/fs/btrfs/ref-cache.c
deleted file mode 100644
index 82d569c..0000000
--- a/fs/btrfs/ref-cache.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2008 Oracle. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License v2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/sort.h>
-#include "ctree.h"
-#include "ref-cache.h"
-#include "transaction.h"
-
-static struct rb_node *tree_insert(struct rb_root *root, u64 bytenr,
- struct rb_node *node)
-{
- struct rb_node **p = &root->rb_node;
- struct rb_node *parent = NULL;
- struct btrfs_leaf_ref *entry;
-
- while (*p) {
- parent = *p;
- entry = rb_entry(parent, struct btrfs_leaf_ref, rb_node);
-
- if (bytenr < entry->bytenr)
- p = &(*p)->rb_left;
- else if (bytenr > entry->bytenr)
- p = &(*p)->rb_right;
- else
- return parent;
- }
-
- entry = rb_entry(node, struct btrfs_leaf_ref, rb_node);
- rb_link_node(node, parent, p);
- rb_insert_color(node, root);
- return NULL;
-}
-
-static struct rb_node *tree_search(struct rb_root *root, u64 bytenr)
-{
- struct rb_node *n = root->rb_node;
- struct btrfs_leaf_ref *entry;
-
- while (n) {
- entry = rb_entry(n, struct btrfs_leaf_ref, rb_node);
- WARN_ON(!entry->in_tree);
-
- if (bytenr < entry->bytenr)
- n = n->rb_left;
- else if (bytenr > entry->bytenr)
- n = n->rb_right;
- else
- return n;
- }
- return NULL;
-}
diff --git a/fs/btrfs/ref-cache.h b/fs/btrfs/ref-cache.h
deleted file mode 100644
index 24f7001..0000000
--- a/fs/btrfs/ref-cache.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2008 Oracle. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License v2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-#ifndef __REFCACHE__
-#define __REFCACHE__
-
-struct btrfs_extent_info {
- /* bytenr and num_bytes find the extent in the extent allocation tree */
- u64 bytenr;
- u64 num_bytes;
-
- /* objectid and offset find the back reference for the file */
- u64 objectid;
- u64 offset;
-};
-
-struct btrfs_leaf_ref {
- struct rb_node rb_node;
- struct btrfs_leaf_ref_tree *tree;
- int in_tree;
- atomic_t usage;
-
- u64 root_gen;
- u64 bytenr;
- u64 owner;
- u64 generation;
- int nritems;
-
- struct list_head list;
- struct btrfs_extent_info extents[];
-};
-
-static inline size_t btrfs_leaf_ref_size(int nr_extents)
-{
- return sizeof(struct btrfs_leaf_ref) +
- sizeof(struct btrfs_extent_info) * nr_extents;
-}
-#endif
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