Fix an extent coalesce bug.

When coalescing, we should take both extents off the LRU list; otherwise decay can grab the existing outer extent through extents_evict.
2017-11-14 16:09:31 -08:00
parent fac706836f
commit eb1b08daae
2 changed files with 18 additions and 7 deletions
--- a/include/jemalloc/internal/extent_inlines.h
+++ b/include/jemalloc/internal/extent_inlines.h
@@ -355,6 +355,11 @@ extent_list_append(extent_list_t *list, extent_t *extent) {
 	ql_tail_insert(list, extent, ql_link);
 }

+static inline void
+extent_list_prepend(extent_list_t *list, extent_t *extent) {
+	ql_head_insert(list, extent, ql_link);
+}
+
 static inline void
 extent_list_replace(extent_list_t *list, extent_t *to_remove,
    extent_t *to_insert) {