Btrfs: write_cache_pages came in 2.6.22

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

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index c1c980d1fbbf..2368536629e7 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2107,7 +2107,7 @@ done:
         return 0;
 }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
 /* Taken directly from 2.6.23 for 2.6.18 back port */
 typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc,
                                 void *data);