Btrfs: Stop using radix trees for the block group cache

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 5b7dbcaacd11..1b2f9e059de6 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -574,7 +574,7 @@ out:
         return set;
 
 search_again:
-        if (start >= end)
+        if (start > end)
                 goto out;
         write_unlock_irqrestore(&tree->lock, flags);
         if (mask & __GFP_WAIT)
@@ -819,6 +819,21 @@ int set_extent_dirty(struct extent_map_tree *tree, u64 start, u64 end,
 }
 EXPORT_SYMBOL(set_extent_dirty);
 
+int set_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
+                    int bits, gfp_t mask)
+{
+        return set_extent_bit(tree, start, end, bits, 0, NULL,
+                              mask);
+}
+EXPORT_SYMBOL(set_extent_bits);
+
+int clear_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
+                      int bits, gfp_t mask)
+{
+        return clear_extent_bit(tree, start, end, bits, 0, 0, mask);
+}
+EXPORT_SYMBOL(clear_extent_bits);
+
 int set_extent_delalloc(struct extent_map_tree *tree, u64 start, u64 end,
                      gfp_t mask)
 {
@@ -1138,7 +1153,6 @@ int set_state_private(struct extent_map_tree *tree, u64 start, u64 private)
 out:
         write_unlock_irq(&tree->lock);
         return ret;
-
 }
 
 int get_state_private(struct extent_map_tree *tree, u64 start, u64 *private)