delalloc_root_mutex 697 fs/btrfs/ctree.h struct mutex delalloc_root_mutex; delalloc_root_mutex 2662 fs/btrfs/disk-io.c mutex_init(&fs_info->delalloc_root_mutex); delalloc_root_mutex 10312 fs/btrfs/inode.c mutex_lock(&fs_info->delalloc_root_mutex); delalloc_root_mutex 10344 fs/btrfs/inode.c mutex_unlock(&fs_info->delalloc_root_mutex);