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-rw-r--r--fs/btrfs/locking.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index 68fd9ccf1805..9ebe9385129b 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -236,25 +236,3 @@ int btrfs_tree_locked(struct extent_buffer *eb)
return test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags) ||
spin_is_locked(&eb->lock);
}
-
-/*
- * btrfs_search_slot uses this to decide if it should drop its locks
- * before doing something expensive like allocating free blocks for cow.
- */
-int btrfs_path_lock_waiting(struct btrfs_path *path, int level)
-{
- int i;
- struct extent_buffer *eb;
-
- for (i = level; i <= level + 1 && i < BTRFS_MAX_LEVEL; i++) {
- eb = path->nodes[i];
- if (!eb)
- break;
- smp_mb();
- if (spin_is_contended(&eb->lock) ||
- waitqueue_active(&eb->lock_wq))
- return 1;
- }
- return 0;
-}
-