Btrfs: Add delayed iput

[linux-2.6-block.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 02b6afbd745020fb51bf43d88c93025459687e12..009e3bd18f23d986a685c50f60e3be73a5020f31 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -892,6 +892,8 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
        root->stripesize = stripesize;
        root->ref_cows = 0;
        root->track_dirty = 0;
+       root->in_radix = 0;
+       root->clean_orphans = 0;
 
        root->fs_info = fs_info;
        root->objectid = objectid;
@@ -928,7 +930,6 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
        root->defrag_trans_start = fs_info->generation;
        init_completion(&root->kobj_unregister);
        root->defrag_running = 0;
-       root->defrag_level = 0;
        root->root_key.objectid = objectid;
        root->anon_super.s_root = NULL;
        root->anon_super.s_dev = 0;
@@ -980,12 +981,12 @@ int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
 
        while (1) {
                ret = find_first_extent_bit(&log_root_tree->dirty_log_pages,
-                                   0, &start, &end, EXTENT_DIRTY);
+                               0, &start, &end, EXTENT_DIRTY | EXTENT_NEW);
                if (ret)
                        break;
 
-               clear_extent_dirty(&log_root_tree->dirty_log_pages,
-                                  start, end, GFP_NOFS);
+               clear_extent_bits(&log_root_tree->dirty_log_pages, start, end,
+                                 EXTENT_DIRTY | EXTENT_NEW, GFP_NOFS);
        }
        eb = fs_info->log_root_tree->node;
 
@@ -1210,8 +1211,10 @@ again:
        ret = radix_tree_insert(&fs_info->fs_roots_radix,
                                (unsigned long)root->root_key.objectid,
                                root);
-       if (ret == 0)
+       if (ret == 0) {
                root->in_radix = 1;
+               root->clean_orphans = 1;
+       }
        spin_unlock(&fs_info->fs_roots_radix_lock);
        radix_tree_preload_end();
        if (ret) {
@@ -1225,10 +1228,6 @@ again:
        ret = btrfs_find_dead_roots(fs_info->tree_root,
                                    root->root_key.objectid);
        WARN_ON(ret);
-
-       if (!(fs_info->sb->s_flags & MS_RDONLY))
-               btrfs_orphan_cleanup(root);
-
        return root;
 fail:
        free_fs_root(root);
@@ -1477,6 +1476,7 @@ static int cleaner_kthread(void *arg)
 
                if (!(root->fs_info->sb->s_flags & MS_RDONLY) &&
                    mutex_trylock(&root->fs_info->cleaner_mutex)) {
+                       btrfs_run_delayed_iputs(root);
                        btrfs_clean_old_snapshots(root);
                        mutex_unlock(&root->fs_info->cleaner_mutex);
                }
@@ -1606,6 +1606,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
        INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_ATOMIC);
        INIT_LIST_HEAD(&fs_info->trans_list);
        INIT_LIST_HEAD(&fs_info->dead_roots);
+       INIT_LIST_HEAD(&fs_info->delayed_iputs);
        INIT_LIST_HEAD(&fs_info->hashers);
        INIT_LIST_HEAD(&fs_info->delalloc_inodes);
        INIT_LIST_HEAD(&fs_info->ordered_operations);
@@ -1614,6 +1615,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
        spin_lock_init(&fs_info->new_trans_lock);
        spin_lock_init(&fs_info->ref_cache_lock);
        spin_lock_init(&fs_info->fs_roots_radix_lock);
+       spin_lock_init(&fs_info->delayed_iput_lock);
 
        init_completion(&fs_info->kobj_unregister);
        fs_info->tree_root = tree_root;
@@ -1689,6 +1691,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
        mutex_init(&fs_info->cleaner_mutex);
        mutex_init(&fs_info->volume_mutex);
        init_rwsem(&fs_info->extent_commit_sem);
+       init_rwsem(&fs_info->cleanup_work_sem);
        init_rwsem(&fs_info->subvol_sem);
 
        btrfs_init_free_cluster(&fs_info->meta_alloc_cluster);
@@ -2386,8 +2389,14 @@ int btrfs_commit_super(struct btrfs_root *root)
        int ret;
 
        mutex_lock(&root->fs_info->cleaner_mutex);
+       btrfs_run_delayed_iputs(root);
        btrfs_clean_old_snapshots(root);
        mutex_unlock(&root->fs_info->cleaner_mutex);
+
+       /* wait until ongoing cleanup work done */
+       down_write(&root->fs_info->cleanup_work_sem);
+       up_write(&root->fs_info->cleanup_work_sem);
+
        trans = btrfs_start_transaction(root, 1);
        ret = btrfs_commit_transaction(trans, root);
        BUG_ON(ret);