Btrfs: add snapshot/subvolume destroy ioctl

[cascardo/linux.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6ade48b..bc57e23 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -839,9 +839,7 @@ struct btrfs_fs_info {
        struct mutex transaction_kthread_mutex;
        struct mutex cleaner_mutex;
        struct mutex chunk_mutex;
-       struct mutex drop_mutex;
        struct mutex volume_mutex;
-       struct mutex tree_reloc_mutex;
        /*
         * this protects the ordered operations list only while we are
         * processing all of the entries on it.  This way we make
@@ -852,6 +850,10 @@ struct btrfs_fs_info {
        struct mutex ordered_operations_mutex;
        struct rw_semaphore extent_commit_sem;
 
+       struct rw_semaphore subvol_sem;
+
+       struct srcu_struct subvol_srcu;
+
        struct list_head trans_list;
        struct list_head hashers;
        struct list_head dead_roots;
@@ -2142,6 +2144,7 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct
 int btrfs_search_root(struct btrfs_root *root, u64 search_start,
                      u64 *found_objectid);
 int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid);
+int btrfs_find_orphan_roots(struct btrfs_root *tree_root);
 int btrfs_set_root_node(struct btrfs_root_item *item,
                        struct extent_buffer *node);
 /* dir-item.c */
@@ -2273,7 +2276,7 @@ int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end);
 int btrfs_writepages(struct address_space *mapping,
                     struct writeback_control *wbc);
 int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
-                            struct btrfs_root *new_root, struct dentry *dentry,
+                            struct btrfs_root *new_root,
                             u64 new_dirid, u64 alloc_hint);
 int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
                         size_t size, struct bio *bio, unsigned long bio_flags);
@@ -2289,6 +2292,7 @@ int btrfs_write_inode(struct inode *inode, int wait);
 void btrfs_dirty_inode(struct inode *inode);
 struct inode *btrfs_alloc_inode(struct super_block *sb);
 void btrfs_destroy_inode(struct inode *inode);
+void btrfs_drop_inode(struct inode *inode);
 int btrfs_init_cachep(void);
 void btrfs_destroy_cachep(void);
 long btrfs_ioctl_trans_end(struct file *file);
@@ -2306,6 +2310,8 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
 int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
 void btrfs_orphan_cleanup(struct btrfs_root *root);
 int btrfs_cont_expand(struct inode *inode, loff_t size);
+int btrfs_invalidate_inodes(struct btrfs_root *root);
+extern struct dentry_operations btrfs_dentry_operations;
 
 /* ioctl.c */
 long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);