? a.out
? o
? x.c
Index: xmalloc.c
===================================================================
RCS file: /cvsroot/src/libexec/ld.elf_so/xmalloc.c,v
retrieving revision 1.10
diff -u -u -r1.10 xmalloc.c
--- xmalloc.c	3 Dec 2010 23:07:49 -0000	1.10
+++ xmalloc.c	25 May 2011 14:32:11 -0000
@@ -148,6 +148,7 @@
 
 static	size_t pagesz;			/* page size */
 static	size_t pagebucket;		/* page size bucket */
+static	size_t pageshift;		/* page size shift */
 
 #ifdef MSTATS
 /*
@@ -203,6 +204,8 @@
 			bucket++;
 		}
 		pagebucket = bucket;
+		for (pageshift = 0, m = pagesz; m != 1; pageshift++, m >>= 1)
+			continue;
 	}
 	/*
 	 * Convert amount of memory requested into closest block size
@@ -277,13 +280,13 @@
 #endif
 	if (sz < pagesz) {
 		amt = pagesz;
-  		nblks = amt / sz;
+		nblks = amt >> (bucket + 3);
 	} else {
 		amt = sz + pagesz;
 		nblks = 1;
 	}
 	if (amt > PAGEPOOL_SIZE)
-		if (morepages(amt/pagesz + NPOOLPAGES) == 0)
+		if (morepages((amt >> pageshift) + NPOOLPAGES) == 0)
 			return;
 	op = (union overhead *)pagepool_start;
 	pagepool_start += amt;