@@ -859,8 +859,9 @@ struct btrfs_fs_info {
struct mutex ordered_operations_mutex;
struct rw_semaphore extent_commit_sem;
- struct rw_semaphore subvol_sem;
+ struct rw_semaphore cleanup_work_sem;
+ struct rw_semaphore subvol_sem;
struct srcu_struct subvol_srcu;
struct list_head trans_list;
@@ -1034,12 +1035,12 @@ struct btrfs_root {
int ref_cows;
int track_dirty;
int in_radix;
+ int clean_orphans;
u64 defrag_trans_start;
struct btrfs_key defrag_progress;
struct btrfs_key defrag_max;
int defrag_running;
- int defrag_level;
char *name;
int in_sysfs;
@@ -894,6 +894,8 @@ 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;
@@ -930,7 +932,6 @@ 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;
@@ -1212,8 +1213,10 @@ 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) {
@@ -1227,10 +1230,6 @@ 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);
@@ -1689,6 +1688,7 @@ 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);
@@ -2388,6 +2388,11 @@ int btrfs_commit_super(struct btrfs_root *root)
mutex_lock(&root->fs_info->cleaner_mutex);
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);
@@ -2088,16 +2088,17 @@ void btrfs_orphan_cleanup(struct btrfs_root *root)
struct inode *inode;
int ret = 0, nr_unlink = 0, nr_truncate = 0;
- path = btrfs_alloc_path();
- if (!path)
+ if (!xchg(&root->clean_orphans, 0))
return;
+
+ path = btrfs_alloc_path();
+ BUG_ON(!path);
path->reada = -1;
key.objectid = BTRFS_ORPHAN_OBJECTID;
btrfs_set_key_type(&key, BTRFS_ORPHAN_ITEM_KEY);
key.offset = (u64)-1;
-
while (1) {
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0) {
@@ -3293,6 +3294,11 @@ void btrfs_delete_inode(struct inode *inode)
}
btrfs_wait_ordered_range(inode, 0, (u64)-1);
+ if (root->fs_info->log_root_recovering) {
+ BUG_ON(!list_empty(&BTRFS_I(inode)->i_orphan));
+ goto no_delete;
+ }
+
if (inode->i_nlink > 0) {
BUG_ON(btrfs_root_refs(&root->root_item) != 0);
goto no_delete;
@@ -3700,6 +3706,13 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
}
srcu_read_unlock(&root->fs_info->subvol_srcu, index);
+ if (root != sub_root) {
+ down_read(&root->fs_info->cleanup_work_sem);
+ if (!(inode->i_sb->s_flags & MS_RDONLY))
+ btrfs_orphan_cleanup(sub_root);
+ up_read(&root->fs_info->cleanup_work_sem);
+ }
+
return inode;
}
@@ -3755,6 +3755,7 @@ out:
BTRFS_DATA_RELOC_TREE_OBJECTID);
if (IS_ERR(fs_root))
err = PTR_ERR(fs_root);
+ btrfs_orphan_cleanup(fs_root);
}
return err;
}
@@ -930,6 +930,17 @@ out_nowrite:
return 0;
}
+static int insert_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 offset)
+{
+ int ret;
+ ret = btrfs_find_orphan_item(root, offset);
+ if (ret > 0)
+ ret = btrfs_insert_orphan_item(trans, root, offset);
+ return ret;
+}
+
+
/*
* There are a few corners where the link count of the file can't
* be properly maintained during replay. So, instead of adding
@@ -997,9 +1008,13 @@ static noinline int fixup_inode_link_count(struct btrfs_trans_handle *trans,
}
BTRFS_I(inode)->index_cnt = (u64)-1;
- if (inode->i_nlink == 0 && S_ISDIR(inode->i_mode)) {
- ret = replay_dir_deletes(trans, root, NULL, path,
- inode->i_ino, 1);
+ if (inode->i_nlink == 0) {
+ if (S_ISDIR(inode->i_mode)) {
+ ret = replay_dir_deletes(trans, root, NULL, path,
+ inode->i_ino, 1);
+ BUG_ON(ret);
+ }
+ ret = insert_orphan_item(trans, root, inode->i_ino);
BUG_ON(ret);
}
btrfs_free_path(path);
@@ -1587,7 +1602,6 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb,
/* inode keys are done during the first stage */
if (key.type == BTRFS_INODE_ITEM_KEY &&
wc->stage == LOG_WALK_REPLAY_INODES) {
- struct inode *inode;
struct btrfs_inode_item *inode_item;
u32 mode;
@@ -1603,31 +1617,16 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb,
eb, i, &key);
BUG_ON(ret);
- /* for regular files, truncate away
- * extents past the new EOF
+ /* for regular files, make sure corresponding
+ * orhpan item exist. extents past the new EOF
+ * will be truncated later by orphan cleanup.
*/
if (S_ISREG(mode)) {
- inode = read_one_inode(root,
- key.objectid);
- BUG_ON(!inode);
-
- ret = btrfs_truncate_inode_items(wc->trans,
- root, inode, inode->i_size,
- BTRFS_EXTENT_DATA_KEY);
+ ret = insert_orphan_item(wc->trans, root,
+ key.objectid);
BUG_ON(ret);
-
- /* if the nlink count is zero here, the iput
- * will free the inode. We bump it to make
- * sure it doesn't get freed until the link
- * count fixup is done
- */
- if (inode->i_nlink == 0) {
- btrfs_inc_nlink(inode);
- btrfs_update_inode(wc->trans,
- root, inode);
- }
- iput(inode);
}
+
ret = link_to_fixup_dir(wc->trans, root,
path, key.objectid);
BUG_ON(ret);