Btrfs: Fix cow semantic in run_delalloc_nocow()

The file preallocation code reversed the logic to force nodatacow.
This fixes it.

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7a8ad42..b3d4078 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1114,10 +1114,10 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page,
        if (btrfs_test_opt(root, NODATACOW) ||
            btrfs_test_flag(inode, NODATACOW))
                ret = run_delalloc_nocow(inode, locked_page, start, end,
-                                        page_started, 0, nr_written);
+                                        page_started, 1, nr_written);
        else if (btrfs_test_flag(inode, PREALLOC))
                ret = run_delalloc_nocow(inode, locked_page, start, end,
-                                        page_started, 1, nr_written);
+                                        page_started, 0, nr_written);
        else
                ret = cow_file_range_async(inode, locked_page, start, end,
                                     page_started, nr_written);