Btrfs: Wait for IO on the block device inodes of newly added devices

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

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 48a3dc030807d431475a58447f6548b6354703b0..404704d268225c376254a2cdc8ecf1920e015c1f 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -135,7 +135,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end)
 
        BUG_ON(num_bytes > btrfs_super_total_bytes(&root->fs_info->super_copy));
        mutex_lock(&BTRFS_I(inode)->extent_mutex);
-       btrfs_drop_extent_cache(inode, start, start + num_bytes - 1);
+       btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0);
        mutex_unlock(&BTRFS_I(inode)->extent_mutex);
 
        while(num_bytes > 0) {
@@ -163,7 +163,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end)
                                break;
                        }
                        btrfs_drop_extent_cache(inode, start,
-                                               start + ins.offset - 1);
+                                               start + ins.offset - 1, 0);
                }
                mutex_unlock(&BTRFS_I(inode)->extent_mutex);
 
@@ -587,7 +587,7 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end)
 
        btrfs_drop_extent_cache(inode, ordered_extent->file_offset,
                                ordered_extent->file_offset +
-                               ordered_extent->len - 1);
+                               ordered_extent->len - 1, 0);
        mutex_unlock(&BTRFS_I(inode)->extent_mutex);
 
        ins.objectid = ordered_extent->start;
@@ -880,7 +880,7 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
        int ret = 0, nr_unlink = 0, nr_truncate = 0;
 
        /* don't do orphan cleanup if the fs is readonly. */
-       if (root->inode->i_sb->s_flags & MS_RDONLY)
+       if (root->fs_info->sb->s_flags & MS_RDONLY)
                return;
 
        path = btrfs_alloc_path();
@@ -892,8 +892,6 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
        btrfs_set_key_type(&key, BTRFS_ORPHAN_ITEM_KEY);
        key.offset = (u64)-1;
 
-       trans = btrfs_start_transaction(root, 1);
-       btrfs_set_trans_block_group(trans, root->inode);
 
        while (1) {
                ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
@@ -933,7 +931,7 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
                 * crossing root thing.  we store the inode number in the
                 * offset of the orphan item.
                 */
-               inode = btrfs_iget_locked(root->inode->i_sb,
+               inode = btrfs_iget_locked(root->fs_info->sb,
                                          found_key.offset, root);
                if (!inode)
                        break;
@@ -965,7 +963,9 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
                 * do a destroy_inode
                 */
                if (is_bad_inode(inode)) {
+                       trans = btrfs_start_transaction(root, 1);
                        btrfs_orphan_del(trans, inode);
+                       btrfs_end_transaction(trans, root);
                        iput(inode);
                        continue;
                }
@@ -988,7 +988,6 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
                printk(KERN_INFO "btrfs: truncated %d orphans\n", nr_truncate);
 
        btrfs_free_path(path);
-       btrfs_end_transaction(trans, root);
 }
 
 void btrfs_read_locked_inode(struct inode *inode)
@@ -1343,8 +1342,7 @@ noinline int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
        u64 mask = root->sectorsize - 1;
 
        if (root->ref_cows)
-               btrfs_drop_extent_cache(inode,
-                                       new_size & (~mask), (u64)-1);
+               btrfs_drop_extent_cache(inode, new_size & (~mask), (u64)-1, 0);
        path = btrfs_alloc_path();
        path->reada = -1;
        BUG_ON(!path);
@@ -1677,7 +1675,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr)
                                                       hole_start, 0, 0,
                                                       hole_size, 0);
                        btrfs_drop_extent_cache(inode, hole_start,
-                                               (u64)-1);
+                                               (u64)-1, 0);
                        btrfs_check_file(root, inode);
                }
                mutex_unlock(&BTRFS_I(inode)->extent_mutex);
@@ -1843,6 +1841,24 @@ static int btrfs_find_actor(struct inode *inode, void *opaque)
                args->root == BTRFS_I(inode)->root);
 }
 
+struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
+                           struct btrfs_root *root, int wait)
+{
+       struct inode *inode;
+       struct btrfs_iget_args args;
+       args.ino = objectid;
+       args.root = root;
+
+       if (wait) {
+               inode = ilookup5(s, objectid, btrfs_find_actor,
+                                (void *)&args);
+       } else {
+               inode = ilookup5_nowait(s, objectid, btrfs_find_actor,
+                                       (void *)&args);
+       }
+       return inode;
+}
+
 struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
                                struct btrfs_root *root)
 {
@@ -3266,7 +3282,7 @@ void btrfs_destroy_inode(struct inode *inode)
                        btrfs_put_ordered_extent(ordered);
                }
        }
-       btrfs_drop_extent_cache(inode, 0, (u64)-1);
+       btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
        kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
 }
 
@@ -3412,19 +3428,36 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root)
 {
        struct list_head *head = &root->fs_info->delalloc_inodes;
        struct btrfs_inode *binode;
+       struct inode *inode;
        unsigned long flags;
 
        spin_lock_irqsave(&root->fs_info->delalloc_lock, flags);
        while(!list_empty(head)) {
                binode = list_entry(head->next, struct btrfs_inode,
                                    delalloc_inodes);
-               atomic_inc(&binode->vfs_inode.i_count);
+               inode = igrab(&binode->vfs_inode);
+               if (!inode)
+                       list_del_init(&binode->delalloc_inodes);
                spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags);
-               filemap_write_and_wait(binode->vfs_inode.i_mapping);
-               iput(&binode->vfs_inode);
+               if (inode) {
+                       filemap_flush(inode->i_mapping);
+                       iput(inode);
+               }
+               cond_resched();
                spin_lock_irqsave(&root->fs_info->delalloc_lock, flags);
        }
        spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags);
+
+       /* the filemap_flush will queue IO into the worker threads, but
+        * we have to make sure the IO is actually started and that
+        * ordered extents get created before we return
+        */
+       atomic_inc(&root->fs_info->async_submit_draining);
+       while(atomic_read(&root->fs_info->nr_async_submits)) {
+               wait_event(root->fs_info->async_submit_wait,
+                  (atomic_read(&root->fs_info->nr_async_submits) == 0));
+       }
+       atomic_dec(&root->fs_info->async_submit_draining);
        return 0;
 }