XArray: Fix Documentation
Minor fixes.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
diff --git a/Documentation/core-api/xarray.rst b/Documentation/core-api/xarray.rst
index 616ac40..dbe96cb 100644
--- a/Documentation/core-api/xarray.rst
+++ b/Documentation/core-api/xarray.rst
@@ -74,7 +74,8 @@
new entry and return the previous entry stored at that index. You can
use :c:func:`xa_erase` instead of calling :c:func:`xa_store` with a
``NULL`` entry. There is no difference between an entry that has never
-been stored to and one that has most recently had ``NULL`` stored to it.
+been stored to, one that has been erased and one that has most recently
+had ``NULL`` stored to it.
You can conditionally replace an entry at an index by using
:c:func:`xa_cmpxchg`. Like :c:func:`cmpxchg`, it will only succeed if
@@ -114,6 +115,9 @@
:c:func:`xa_release` will do nothing; if instead you want the entry to
become ``NULL``, you should use :c:func:`xa_erase`.
+If all entries in the array are ``NULL``, the :c:func:`xa_empty` function
+will return ``true``.
+
Finally, you can remove all entries from an XArray by calling
:c:func:`xa_destroy`. If the XArray entries are pointers, you may wish
to free the entries first. You can do this by iterating over all present
