Btrfs: fix deadlock when finalizing block group creation

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

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index eb09c20..a994bb0 100644 (file)
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -65,6 +65,7 @@ struct btrfs_transaction {
        struct list_head switch_commits;
        struct list_head dirty_bgs;
        struct list_head io_bgs;
+       struct list_head dropped_roots;
        u64 num_dirty_bgs;
 
        /*
@@ -74,6 +75,9 @@ struct btrfs_transaction {
         */
        struct mutex cache_write_mutex;
        spinlock_t dirty_bgs_lock;
+       struct list_head deleted_bgs;
+       spinlock_t deleted_bgs_lock;
+       spinlock_t dropped_roots_lock;
        struct btrfs_delayed_ref_root delayed_refs;
        int aborted;
        int dirty_bg_run;
@@ -114,6 +118,7 @@ struct btrfs_trans_handle {
        short aborted;
        short adding_csums;
        bool allocating_chunk;
+       bool can_flush_pending_bgs;
        bool reloc_reserved;
        bool sync;
        unsigned int type;
@@ -214,5 +219,6 @@ int btrfs_transaction_blocked(struct btrfs_fs_info *info);
 int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
 void btrfs_put_transaction(struct btrfs_transaction *transaction);
 void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info);
-
+void btrfs_add_dropped_root(struct btrfs_trans_handle *trans,
+                           struct btrfs_root *root);
 #endif