1 files changed, 24 insertions, 0 deletions

diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h
new file mode 100644
index 000000000000..cd6598b169df
--- /dev/null
+++ b/fs/btrfs/compat.h
@@ -0,0 +1,24 @@
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#define btrfs_drop_nlink(inode) drop_nlink(inode)
+#define btrfs_inc_nlink(inode)  inc_nlink(inode)
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
+static inline struct dentry *d_obtain_alias(struct inode *inode)
+{
+        struct dentry *d;
+
+        if (!inode)
+                return NULL;
+        if (IS_ERR(inode))
+                return ERR_CAST(inode);
+
+        d = d_alloc_anon(inode);
+        if (!d)
+                iput(inode);
+        return d;
+}
+#endif
+
+#endif /* _COMPAT_H_ */