svn commit: r196905 - user/kmacy/releng_7_2_fcs_1/sys/kern
Kip Macy
kmacy at FreeBSD.org
Sun Sep 6 19:45:38 UTC 2009
Author: kmacy
Date: Sun Sep 6 19:45:37 2009
New Revision: 196905
URL: http://svn.freebsd.org/changeset/base/196905
Log:
make bg sendfile a toggle
Modified:
user/kmacy/releng_7_2_fcs_1/sys/kern/uipc_syscalls.c
Modified: user/kmacy/releng_7_2_fcs_1/sys/kern/uipc_syscalls.c
==============================================================================
--- user/kmacy/releng_7_2_fcs_1/sys/kern/uipc_syscalls.c Sun Sep 6 19:33:13 2009 (r196904)
+++ user/kmacy/releng_7_2_fcs_1/sys/kern/uipc_syscalls.c Sun Sep 6 19:45:37 2009 (r196905)
@@ -106,6 +106,10 @@ SYSCTL_INT(_kern_ipc, OID_AUTO, nsfbufsp
SYSCTL_INT(_kern_ipc, OID_AUTO, nsfbufsused, CTLFLAG_RD, &nsfbufsused, 0,
"Number of sendfile(2) sf_bufs in use");
+static int bg_sendfile_enable = 1;
+SYSCTL_INT(_kern_ipc, OID_AUTO, bg_sendfile_enable, CTLFLAG_RW,
+ &bg_sendfile_enable, 0, "Enable background sendfile");
+
/*
* Convert a user file descriptor to a kernel file entry. A reference on the
* file entry is held upon returning. This is lighter weight than
@@ -1986,7 +1990,8 @@ retry_space:
(space <= 0 ||
space < so->so_snd.sb_lowat)) {
if (so->so_state & SS_NBIO) {
- if ((so->so_snd.sb_flags & SB_SENDING) == 0)
+ if (bg_sendfile_enable &&
+ (so->so_snd.sb_flags & SB_SENDING) == 0)
soissending(so, td, uap, hdr_uio, trl_uio, compat, sbytes);
SOCKBUF_UNLOCK(&so->so_snd);
error = EAGAIN;
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