1 files changed, 31 insertions, 6 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6c093fa98f61..300628795fdb 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -930,7 +930,6 @@ struct btrfs_fs_info {
          * is required instead of the faster short fsync log commits
          */
         u64 last_trans_log_full_commit;
-        u64 open_ioctl_trans;
         unsigned long mount_opt:20;
         unsigned long compress_type:4;
         u64 max_inline;
@@ -947,7 +946,6 @@ struct btrfs_fs_info {
         struct super_block *sb;
         struct inode *btree_inode;
         struct backing_dev_info bdi;
-        struct mutex trans_mutex;
         struct mutex tree_log_mutex;
         struct mutex transaction_kthread_mutex;
         struct mutex cleaner_mutex;
@@ -968,6 +966,13 @@ struct btrfs_fs_info {
         struct rw_semaphore subvol_sem;
         struct srcu_struct subvol_srcu;
 
+        spinlock_t trans_lock;
+        /*
+         * the reloc mutex goes with the trans lock, it is taken
+         * during commit to protect us from the relocation code
+         */
+        struct mutex reloc_mutex;
+
         struct list_head trans_list;
         struct list_head hashers;
         struct list_head dead_roots;
@@ -980,6 +985,7 @@ struct btrfs_fs_info {
         atomic_t async_submit_draining;
         atomic_t nr_async_bios;
         atomic_t async_delalloc_pages;
+        atomic_t open_ioctl_trans;
 
         /*
          * this is used by the balancing code to wait for all the pending
@@ -1044,6 +1050,7 @@ struct btrfs_fs_info {
         int closing;
         int log_root_recovering;
         int enospc_unlink;
+        int trans_no_join;
 
         u64 total_pinned;
 
@@ -1065,7 +1072,6 @@ struct btrfs_fs_info {
         struct reloc_control *reloc_ctl;
 
         spinlock_t delalloc_lock;
-        spinlock_t new_trans_lock;
         u64 delalloc_bytes;
 
         /* data_alloc_cluster is only used in ssd mode */
@@ -1172,6 +1178,14 @@ struct btrfs_root {
         u32 type;
 
         u64 highest_objectid;
+
+        /* btrfs_record_root_in_trans is a multi-step process,
+         * and it can race with the balancing code.   But the
+         * race is very small, and only the first time the root
+         * is added to each transaction.  So in_trans_setup
+         * is used to tell us when more checks are required
+         */
+        unsigned long in_trans_setup;
         int ref_cows;
         int track_dirty;
         int in_radix;
@@ -1181,7 +1195,6 @@ struct btrfs_root {
         struct btrfs_key defrag_max;
         int defrag_running;
         char *name;
-        int in_sysfs;
 
         /* the dirty list is only used by non-reference counted roots */
         struct list_head dirty_list;
@@ -1340,6 +1353,7 @@ struct btrfs_ioctl_defrag_range_args {
 #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
 #define BTRFS_MOUNT_ENOSPC_DEBUG         (1 << 15)
 #define BTRFS_MOUNT_AUTO_DEFRAG         (1 << 16)
+#define BTRFS_MOUNT_INODE_MAP_CACHE     (1 << 17)
 
 #define btrfs_clear_opt(o, opt)         ((o) &= ~BTRFS_MOUNT_##opt)
 #define btrfs_set_opt(o, opt)           ((o) |= BTRFS_MOUNT_##opt)
@@ -2238,6 +2252,9 @@ int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
 void btrfs_block_rsv_release(struct btrfs_root *root,
                              struct btrfs_block_rsv *block_rsv,
                              u64 num_bytes);
+int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans,
+                                    struct btrfs_root *root,
+                                    struct btrfs_block_rsv *rsv);
 int btrfs_set_block_group_ro(struct btrfs_root *root,
                              struct btrfs_block_group_cache *cache);
 int btrfs_set_block_group_rw(struct btrfs_root *root,
@@ -2350,6 +2367,15 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
                         struct btrfs_root *root,
                         struct extent_buffer *node,
                         struct extent_buffer *parent);
+static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
+{
+        /*
+         * Get synced with close_ctree()
+         */
+        smp_mb();
+        return fs_info->closing;
+}
+
 /* root-item.c */
 int btrfs_find_root_ref(struct btrfs_root *tree_root,
                         struct btrfs_path *path,
@@ -2512,8 +2538,7 @@ 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,
-                             u64 new_dirid, u64 alloc_hint);
+                             struct btrfs_root *new_root, u64 new_dirid);
 int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
                          size_t size, struct bio *bio, unsigned long bio_flags);