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-rw-r--r--fs/btrfs/locking.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h
index ab268be09bb5..490c7a79e995 100644
--- a/fs/btrfs/locking.h
+++ b/fs/btrfs/locking.h
@@ -94,6 +94,7 @@ int btrfs_try_tree_read_lock(struct extent_buffer *eb);
int btrfs_try_tree_write_lock(struct extent_buffer *eb);
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root);
+struct extent_buffer *btrfs_try_read_lock_root_node(struct btrfs_root *root);
#ifdef CONFIG_BTRFS_DEBUG
static inline void btrfs_assert_tree_write_locked(struct extent_buffer *eb)