Btrfs: Kill init_btrfs_i()

All code in init_btrfs_i can be moved into btrfs_alloc_inode()

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d53cad1..f444250 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3596,40 +3596,10 @@ again:
        return 0;
 }
 
-static noinline void init_btrfs_i(struct inode *inode)
-{
-       struct btrfs_inode *bi = BTRFS_I(inode);
-
-       bi->generation = 0;
-       bi->sequence = 0;
-       bi->last_trans = 0;
-       bi->last_sub_trans = 0;
-       bi->logged_trans = 0;
-       bi->delalloc_bytes = 0;
-       bi->reserved_bytes = 0;
-       bi->disk_i_size = 0;
-       bi->flags = 0;
-       bi->index_cnt = (u64)-1;
-       bi->last_unlink_trans = 0;
-       bi->ordered_data_close = 0;
-       bi->force_compress = 0;
-       extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
-       extent_io_tree_init(&BTRFS_I(inode)->io_tree,
-                            inode->i_mapping, GFP_NOFS);
-       extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree,
-                            inode->i_mapping, GFP_NOFS);
-       INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes);
-       INIT_LIST_HEAD(&BTRFS_I(inode)->ordered_operations);
-       RB_CLEAR_NODE(&BTRFS_I(inode)->rb_node);
-       btrfs_ordered_inode_tree_init(&BTRFS_I(inode)->ordered_tree);
-       mutex_init(&BTRFS_I(inode)->log_mutex);
-}
-
 static int btrfs_init_locked_inode(struct inode *inode, void *p)
 {
        struct btrfs_iget_args *args = p;
        inode->i_ino = args->ino;
-       init_btrfs_i(inode);
        BTRFS_I(inode)->root = args->root;
        btrfs_set_inode_space_info(args->root, inode);
        return 0;
@@ -3692,8 +3662,6 @@ static struct inode *new_simple_dir(struct super_block *s,
        if (!inode)
                return ERR_PTR(-ENOMEM);
 
-       init_btrfs_i(inode);
-
        BTRFS_I(inode)->root = root;
        memcpy(&BTRFS_I(inode)->location, key, sizeof(*key));
        BTRFS_I(inode)->dummy_inode = 1;
@@ -4092,7 +4060,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
         * btrfs_get_inode_index_count has an explanation for the magic
         * number
         */
-       init_btrfs_i(inode);
        BTRFS_I(inode)->index_cnt = 2;
        BTRFS_I(inode)->root = root;
        BTRFS_I(inode)->generation = trans->transid;
@@ -5263,21 +5230,46 @@ unsigned long btrfs_force_ra(struct address_space *mapping,
 struct inode *btrfs_alloc_inode(struct super_block *sb)
 {
        struct btrfs_inode *ei;
+       struct inode *inode;
 
        ei = kmem_cache_alloc(btrfs_inode_cachep, GFP_NOFS);
        if (!ei)
                return NULL;
+
+       ei->root = NULL;
+       ei->space_info = NULL;
+       ei->generation = 0;
+       ei->sequence = 0;
        ei->last_trans = 0;
        ei->last_sub_trans = 0;
        ei->logged_trans = 0;
+       ei->delalloc_bytes = 0;
+       ei->reserved_bytes = 0;
+       ei->disk_i_size = 0;
+       ei->flags = 0;
+       ei->index_cnt = (u64)-1;
+       ei->last_unlink_trans = 0;
+
+       spin_lock_init(&ei->accounting_lock);
        ei->outstanding_extents = 0;
        ei->reserved_extents = 0;
-       ei->root = NULL;
-       spin_lock_init(&ei->accounting_lock);
+
+       ei->ordered_data_close = 0;
+       ei->dummy_inode = 0;
+       ei->force_compress = 0;
+
+       inode = &ei->vfs_inode;
+       extent_map_tree_init(&ei->extent_tree, GFP_NOFS);
+       extent_io_tree_init(&ei->io_tree, &inode->i_data, GFP_NOFS);
+       extent_io_tree_init(&ei->io_failure_tree, &inode->i_data, GFP_NOFS);
+       mutex_init(&ei->log_mutex);
        btrfs_ordered_inode_tree_init(&ei->ordered_tree);
        INIT_LIST_HEAD(&ei->i_orphan);
+       INIT_LIST_HEAD(&ei->delalloc_inodes);
        INIT_LIST_HEAD(&ei->ordered_operations);
-       return &ei->vfs_inode;
+       RB_CLEAR_NODE(&ei->rb_node);
+
+       return inode;
 }
 
 void btrfs_destroy_inode(struct inode *inode)