module_param_named(accept_threshold_percent, zswap_accept_thr_percent,
uint, 0644);
-/* Enable/disable handling same-value filled pages (enabled by default) */
+/*
+ * Enable/disable handling same-value filled pages (enabled by default).
+ * If disabled every page is considered non-same-value filled.
+ */
static bool zswap_same_filled_pages_enabled = true;
module_param_named(same_filled_pages_enabled, zswap_same_filled_pages_enabled,
bool, 0644);
+/* Enable/disable handling non-same-value filled pages (enabled by default) */
+static bool zswap_non_same_filled_pages_enabled = true;
+module_param_named(non_same_filled_pages_enabled, zswap_non_same_filled_pages_enabled,
+ bool, 0644);
+
/*********************************
* data structures
**********************************/
kunmap_atomic(src);
}
+ if (!zswap_non_same_filled_pages_enabled) {
+ ret = -EINVAL;
+ goto freepage;
+ }
+
/* if entry is successfully added, it keeps the reference */
entry->pool = zswap_pool_current_get();
if (!entry->pool) {