>+static int sfreadahead = MAXBSIZE;
>+static int sfrefer;
>
>SYSCTL_INT(_kern_ipc, OID_AUTO, nsfbufs, CTLFLAG_RDTUN, &nsfbufs, 0,
> "Maximum number of sendfile(2) sf_bufs available");
>@@ -105,6 +107,10 @@
> "Number of sendfile(2) sf_bufs at peak usage");
>SYSCTL_INT(_kern_ipc, OID_AUTO, nsfbufsused, CTLFLAG_RD, &nsfbufsused, 0,
> "Number of sendfile(2) sf_bufs in use");
>+SYSCTL_INT(_kern_ipc, OID_AUTO, sfreadahead, CTLFLAG_RW, &sfreadahead, 0,
>+ "Number of sendfile(2) read-ahead blocks");
s/blocks/bytes/?