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-rw-r--r--libbb/appletlib.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index f760af2cb..2d01a3ae7 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -942,6 +942,14 @@ int main(int argc UNUSED_PARAM, char **argv)
*/
mallopt(M_MMAP_THRESHOLD, 32 * 1024 - 256);
#endif
+#if 0 /*def M_TOP_PAD*/
+ /* When the program break is increased, then M_TOP_PAD bytes are added
+ * to the sbrk(2) request. When the heap is trimmed because of free(3),
+ * this much free space is preserved at the top of the heap.
+ * glibc default seems to be way too big: 128k, but need to verify.
+ */
+ mallopt(M_TOP_PAD, 8 * 1024);
+#endif
#if !BB_MMU
/* NOMMU re-exec trick sets high-order bit in first byte of name */