commit 5bf03f8ce5802b90a16b595e962fe4f07ce7fe93
author Alex Lapenkou <lapenkov@fb.com> Tue Mar 22 14:33:04 2022 -0700
committer Alexander Lapenkov <lapenkov.a@yandex.ru> Tue Mar 22 17:45:55 2022 -0700
tree a938f76deb3eae9ec8198be77ac0cceb56f7f1b8
parent 52631c90f664ded0a5106a7d5fd906d46a7c1f81

Implement PAGE_FLOOR macro

include/jemalloc/internal/pages.h

diff --git a/include/jemalloc/internal/pages.h b/include/jemalloc/internal/pages.h
index 3d7993d..ad1f606 100644
--- a/include/jemalloc/internal/pages.h
+++ b/include/jemalloc/internal/pages.h
@@ -13,6 +13,9 @@
 /* Return the smallest pagesize multiple that is >= s. */
 #define PAGE_CEILING(s)							\
 	(((s) + PAGE_MASK) & ~PAGE_MASK)
+/* Return the largest pagesize multiple that is <=s. */
+#define PAGE_FLOOR(s) 							\
+	((s) & ~PAGE_MASK)
 
 /* Huge page size.  LG_HUGEPAGE is determined by the configure script. */
 #define HUGEPAGE	((size_t)(1U << LG_HUGEPAGE))

src/sec.c

diff --git a/src/sec.c b/src/sec.c
index 6fffaf1..c13904d 100644
--- a/src/sec.c
+++ b/src/sec.c
@@ -25,7 +25,7 @@
     const sec_opts_t *opts) {
 	assert(opts->max_alloc > 0);
 
-	size_t max_alloc = opts->max_alloc & ~PAGE_MASK;
+	size_t max_alloc = PAGE_FLOOR(opts->max_alloc);
 	pszind_t npsizes = sz_psz2ind(max_alloc) + 1;
 
 	size_t sz_shards = opts->nshards * sizeof(sec_shard_t);