btrfs: zero out delayed node upon allocation

It's slightly cleaner to zero-out the delayed node upon allocation
than to do it by hand in btrfs_init_delayed_node() for a few members

Signed-off-by: Alexandru Moise <00moses.alexander00@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
(cherry picked from commit 352dd9c8d3b34e406584c95be45cbc4f1ec5a405)

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index a2ae42720a6afe92701de402b837d56dd66d03b4..0a00c4f4465932be481d016c9ea7a0e00f09d27d 100644 (file)
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -54,16 +54,11 @@ static inline void btrfs_init_delayed_node(
        delayed_node->root = root;
        delayed_node->inode_id = inode_id;
        atomic_set(&delayed_node->refs, 0);
-       delayed_node->count = 0;
-       delayed_node->flags = 0;
        delayed_node->ins_root = RB_ROOT;
        delayed_node->del_root = RB_ROOT;
        mutex_init(&delayed_node->mutex);
-       delayed_node->index_cnt = 0;
        INIT_LIST_HEAD(&delayed_node->n_list);
        INIT_LIST_HEAD(&delayed_node->p_list);
-       delayed_node->bytes_reserved = 0;
-       memset(&delayed_node->inode_item, 0, sizeof(delayed_node->inode_item));
 }
 
 static inline int btrfs_is_continuous_delayed_item(
@@ -132,7 +127,7 @@ again:
        if (node)
                return node;
 
-       node = kmem_cache_alloc(delayed_node_cache, GFP_NOFS);
+       node = kmem_cache_zalloc(delayed_node_cache, GFP_NOFS);
        if (!node)
                return ERR_PTR(-ENOMEM);
        btrfs_init_delayed_node(node, root, ino);