XArray: Fix incorrect comment in header file

256 means Retry entry and 257 means Zero entry,
so fix it.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index f73e177..a491653 100644 (file)
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -32,8 +32,8 @@
  * The following internal entries have a special meaning:
  *
  * 0-62: Sibling entries
- * 256: Zero entry
- * 257: Retry entry
+ * 256: Retry entry
+ * 257: Zero entry
  *
  * Errors are also represented as internal entries, but use the negative
  * space (-4094 to -2).  They're never stored in the slots array; only