Introduce the M_ZERO flag to malloc(9)

Instead of:

        foo = malloc(sizeof(foo), M_WAIT);
        bzero(foo, sizeof(foo));

You can now (and please do) use:

        foo = malloc(sizeof(foo), M_WAIT | M_ZERO);

In the future this will enable us to do idle-time pre-zeroing of
malloc-space.

1 files changed, 2 insertions, 0 deletions

diff --git a/share/man/man9/malloc.9 b/share/man/man9/malloc.9
index 15b1b56..2c93e63 100644
--- a/share/man/man9/malloc.9
+++ b/share/man/man9/malloc.9
@@ -88,6 +88,8 @@ argument further qualifies
 .Fn malloc No Ns 's
 operational characteristics as follows:
 .Bl -tag -width indent
+.It Dv M_ZERO
+Causes the allocated memory to be set to all zeros.
 .It Dv M_NOWAIT
 Causes
 .Fn malloc