# HG changeset patch
# Parent 5d108a5ad3cb506b6bdd9f934bb8f6a4416dbf04
Add d_discard to all struct cdevsw instances.

All have been set to "nodiscard"; some should get a real implementation.

diff -r 5d108a5ad3cb sys/altq/altq_conf.c
--- a/sys/altq/altq_conf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/altq/altq_conf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -178,6 +178,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/arch/acorn26/ioc/arcpp.c
--- a/sys/arch/acorn26/ioc/arcpp.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/acorn26/ioc/arcpp.c	Sun Mar 23 02:30:23 2014 -0400
@@ -119,6 +119,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/acorn32/mainbus/fd.c
--- a/sys/arch/acorn32/mainbus/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/acorn32/mainbus/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -289,6 +289,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/alpha/alpha/promcons.c
--- a/sys/arch/alpha/alpha/promcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/alpha/alpha/promcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -73,6 +73,7 @@
 	.d_poll = prompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -275,6 +276,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/fd.c
--- a/sys/arch/amiga/dev/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -275,6 +275,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/grf.c
--- a/sys/arch/amiga/dev/grf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/grf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = nopoll,
 	.d_mmap = grfmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/ite.c
--- a/sys/arch/amiga/dev/ite.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/ite.c	Sun Mar 23 02:30:23 2014 -0400
@@ -172,6 +172,7 @@
 	.d_poll = itepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/kbd.c
--- a/sys/arch/amiga/dev/kbd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/kbd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -181,6 +181,7 @@
 	.d_poll = kbdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = kbdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/mfc.c
--- a/sys/arch/amiga/dev/mfc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/mfc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -258,6 +258,7 @@
 	.d_poll = mfcspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/ms.c
--- a/sys/arch/amiga/dev/ms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/ms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -141,6 +141,7 @@
 	.d_poll = mspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = mskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/msc.c
--- a/sys/arch/amiga/dev/msc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/msc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -236,6 +236,7 @@
 	.d_poll = mscpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/par.c
--- a/sys/arch/amiga/dev/par.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/par.c	Sun Mar 23 02:30:23 2014 -0400
@@ -124,6 +124,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/ser.c
--- a/sys/arch/amiga/dev/ser.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/ser.c	Sun Mar 23 02:30:23 2014 -0400
@@ -99,6 +99,7 @@
 	.d_poll = serpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/amiga/dev/view.c
--- a/sys/arch/amiga/dev/view.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/amiga/dev/view.c	Sun Mar 23 02:30:23 2014 -0400
@@ -90,6 +90,7 @@
 	.d_poll = nopoll,
 	.d_mmap = viewmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/arc/dev/opms.c
--- a/sys/arch/arc/dev/opms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arc/dev/opms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -149,6 +149,7 @@
 	.d_poll = opmspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = opmskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/arc/dev/pccons.c
--- a/sys/arch/arc/dev/pccons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arc/dev/pccons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -196,6 +196,7 @@
 	.d_poll = pcpoll,
 	.d_mmap = pcmmap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arc/jazz/fd.c
--- a/sys/arch/arc/jazz/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arc/jazz/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -208,6 +208,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/at91/at91dbgu.c
--- a/sys/arch/arm/at91/at91dbgu.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/at91/at91dbgu.c	Sun Mar 23 02:30:23 2014 -0400
@@ -192,6 +192,7 @@
 	.d_poll = at91dbgu_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/at91/at91usart.c
--- a/sys/arch/arm/at91/at91usart.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/at91/at91usart.c	Sun Mar 23 02:30:23 2014 -0400
@@ -195,6 +195,7 @@
 	.d_poll = at91usart_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/clps711x/clpscom.c
--- a/sys/arch/arm/clps711x/clpscom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/clps711x/clpscom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -179,6 +179,7 @@
 	.d_poll = clpscompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/ep93xx/epcom.c
--- a/sys/arch/arm/ep93xx/epcom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/ep93xx/epcom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -172,6 +172,7 @@
 	.d_poll = epcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/footbridge/footbridge_com.c
--- a/sys/arch/arm/footbridge/footbridge_com.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/footbridge/footbridge_com.c	Sun Mar 23 02:30:23 2014 -0400
@@ -138,6 +138,7 @@
 	.d_poll = fcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/imx/imxuart.c
--- a/sys/arch/arm/imx/imxuart.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/imx/imxuart.c	Sun Mar 23 02:30:23 2014 -0400
@@ -348,6 +348,7 @@
 	.d_poll = imxupoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/ixp12x0/ixp12x0_com.c
--- a/sys/arch/arm/ixp12x0/ixp12x0_com.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/ixp12x0/ixp12x0_com.c	Sun Mar 23 02:30:23 2014 -0400
@@ -161,6 +161,7 @@
 	.d_poll = ixpcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/s3c2xx0/sscom.c
--- a/sys/arch/arm/s3c2xx0/sscom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/s3c2xx0/sscom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -198,6 +198,7 @@
 	.d_poll = sscompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/arm/sa11x0/sa11x0_com.c
--- a/sys/arch/arm/sa11x0/sa11x0_com.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/arm/sa11x0/sa11x0_com.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = sacompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/clock.c
--- a/sys/arch/atari/dev/clock.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/clock.c	Sun Mar 23 02:30:23 2014 -0400
@@ -132,6 +132,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/fd.c
--- a/sys/arch/atari/dev/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -301,6 +301,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/grf.c
--- a/sys/arch/atari/dev/grf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/grf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -118,6 +118,7 @@
 	.d_poll = nopoll,
 	.d_mmap = grfmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/hdfd.c
--- a/sys/arch/atari/dev/hdfd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/hdfd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -307,6 +307,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/ite.c
--- a/sys/arch/atari/dev/ite.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/ite.c	Sun Mar 23 02:30:23 2014 -0400
@@ -170,6 +170,7 @@
 	.d_poll = itepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/kbd.c
--- a/sys/arch/atari/dev/kbd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/kbd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -139,6 +139,7 @@
 	.d_poll = kbdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = kbdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/lpt.c
--- a/sys/arch/atari/dev/lpt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/lpt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -146,6 +146,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/ms.c
--- a/sys/arch/atari/dev/ms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/ms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -101,6 +101,7 @@
 	.d_poll = mspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = mskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/ser.c
--- a/sys/arch/atari/dev/ser.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/ser.c	Sun Mar 23 02:30:23 2014 -0400
@@ -269,6 +269,7 @@
 	.d_poll = serpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/view.c
--- a/sys/arch/atari/dev/view.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/view.c	Sun Mar 23 02:30:23 2014 -0400
@@ -86,6 +86,7 @@
 	.d_poll = nopoll,
 	.d_mmap = viewmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/dev/zs.c
--- a/sys/arch/atari/dev/zs.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/dev/zs.c	Sun Mar 23 02:30:23 2014 -0400
@@ -248,6 +248,7 @@
 	.d_poll = zspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/vme/et4000.c
--- a/sys/arch/atari/vme/et4000.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/vme/et4000.c	Sun Mar 23 02:30:23 2014 -0400
@@ -148,6 +148,7 @@
 	.d_poll = nopoll,
 	.d_mmap = et4kmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/atari/vme/leo.c
--- a/sys/arch/atari/vme/leo.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/atari/vme/leo.c	Sun Mar 23 02:30:23 2014 -0400
@@ -118,6 +118,7 @@
 	.d_poll = nopoll,
 	.d_mmap = leommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/cobalt/dev/panel.c
--- a/sys/arch/cobalt/dev/panel.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/cobalt/dev/panel.c	Sun Mar 23 02:30:23 2014 -0400
@@ -115,6 +115,7 @@
 	.d_poll = panelpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/dreamcast/dev/gdrom.c
--- a/sys/arch/dreamcast/dev/gdrom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/dreamcast/dev/gdrom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -85,6 +85,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/dreamcast/dev/maple/maple.c
--- a/sys/arch/dreamcast/dev/maple/maple.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/dreamcast/dev/maple/maple.c	Sun Mar 23 02:30:23 2014 -0400
@@ -175,6 +175,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/dreamcast/dev/maple/mlcd.c
--- a/sys/arch/dreamcast/dev/maple/mlcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/dreamcast/dev/maple/mlcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -179,6 +179,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/dreamcast/dev/maple/mmemcard.c
--- a/sys/arch/dreamcast/dev/maple/mmemcard.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/dreamcast/dev/maple/mmemcard.c	Sun Mar 23 02:30:23 2014 -0400
@@ -210,6 +210,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/emips/ebus/ace_ebus.c
--- a/sys/arch/emips/ebus/ace_ebus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/emips/ebus/ace_ebus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1577,6 +1577,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/emips/ebus/dz_ebus.c
--- a/sys/arch/emips/ebus/dz_ebus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/emips/ebus/dz_ebus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -121,6 +121,7 @@
 	.d_poll = dzpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/emips/ebus/flash_ebus.c
--- a/sys/arch/emips/ebus/flash_ebus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/emips/ebus/flash_ebus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1417,6 +1417,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/emips/ebus/icap_ebus.c
--- a/sys/arch/emips/ebus/icap_ebus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/emips/ebus/icap_ebus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -159,6 +159,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/emips/ebus/stub_ebus.c
--- a/sys/arch/emips/ebus/stub_ebus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/emips/ebus/stub_ebus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -108,6 +108,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/epoc32/windermere/wmcom.c
--- a/sys/arch/epoc32/windermere/wmcom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/epoc32/windermere/wmcom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -143,6 +143,7 @@
 	.d_poll = wmcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/dev/plcom.c
--- a/sys/arch/evbarm/dev/plcom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/dev/plcom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -204,6 +204,7 @@
 	.d_poll = plcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/g42xxeb/g42xxeb_lcd.c
--- a/sys/arch/evbarm/g42xxeb/g42xxeb_lcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/g42xxeb/g42xxeb_lcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -136,6 +136,7 @@
 	.d_poll = nopoll,
 	.d_mmap = lcdmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/lubbock/lubbock_lcd.c
--- a/sys/arch/evbarm/lubbock/lubbock_lcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/lubbock/lubbock_lcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -146,6 +146,7 @@
 	.d_poll = nopoll,
 	.d_mmap = lcdmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/mini2440/mini2440_lcd.c
--- a/sys/arch/evbarm/mini2440/mini2440_lcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/mini2440/mini2440_lcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -197,6 +197,7 @@
 	.d_poll = nopoll,
 	.d_mmap = lcdmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/netwalker/netwalker_lcd.c
--- a/sys/arch/evbarm/netwalker/netwalker_lcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/netwalker/netwalker_lcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -83,6 +83,7 @@
 	.d_poll = nopoll,
 	.d_mmap = lcdmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/smdk2xx0/smdk2410_lcd.c
--- a/sys/arch/evbarm/smdk2xx0/smdk2410_lcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/smdk2xx0/smdk2410_lcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -170,6 +170,7 @@
 	.d_poll = nopoll,
 	.d_mmap = lcdmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/evbarm/tsarm/tslcd.c
--- a/sys/arch/evbarm/tsarm/tslcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbarm/tsarm/tslcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -87,6 +87,7 @@
 	.d_poll = tslcdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/evbppc/virtex/dev/xlcom.c
--- a/sys/arch/evbppc/virtex/dev/xlcom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/evbppc/virtex/dev/xlcom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -148,6 +148,7 @@
 	.d_poll = xlcom_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/hp300/dev/ct.c
--- a/sys/arch/hp300/dev/ct.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hp300/dev/ct.c	Sun Mar 23 02:30:23 2014 -0400
@@ -174,6 +174,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/arch/hp300/dev/dcm.c
--- a/sys/arch/hp300/dev/dcm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hp300/dev/dcm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -341,6 +341,7 @@
 	.d_poll = dcmpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/hp300/dev/mt.c
--- a/sys/arch/hp300/dev/mt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hp300/dev/mt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -163,6 +163,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/arch/hp300/dev/ppi.c
--- a/sys/arch/hp300/dev/ppi.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hp300/dev/ppi.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/hp300/dev/rd.c
--- a/sys/arch/hp300/dev/rd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hp300/dev/rd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -303,6 +303,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/hpcmips/dev/ucbsnd.c
--- a/sys/arch/hpcmips/dev/ucbsnd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hpcmips/dev/ucbsnd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -186,6 +186,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nullmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/hpcmips/tx/txcom.c
--- a/sys/arch/hpcmips/tx/txcom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hpcmips/tx/txcom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -187,6 +187,7 @@
 	.d_poll = txcompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/hpcmips/vr/flash_vrip.c
--- a/sys/arch/hpcmips/vr/flash_vrip.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hpcmips/vr/flash_vrip.c	Sun Mar 23 02:30:23 2014 -0400
@@ -94,6 +94,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/hpcmips/vr/vr4181aiu.c
--- a/sys/arch/hpcmips/vr/vr4181aiu.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/hpcmips/vr/vr4181aiu.c	Sun Mar 23 02:30:23 2014 -0400
@@ -107,6 +107,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/i386/isa/cmos.c
--- a/sys/arch/i386/isa/cmos.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/i386/isa/cmos.c	Sun Mar 23 02:30:23 2014 -0400
@@ -105,6 +105,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/arch/landisk/dev/button.c
--- a/sys/arch/landisk/dev/button.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/landisk/dev/button.c	Sun Mar 23 02:30:23 2014 -0400
@@ -101,6 +101,7 @@
 	.d_poll = btnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = btnkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/luna68k/dev/siotty.c
--- a/sys/arch/luna68k/dev/siotty.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/luna68k/dev/siotty.c	Sun Mar 23 02:30:23 2014 -0400
@@ -138,6 +138,7 @@
 	.d_poll = siopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/dev/aed.c
--- a/sys/arch/mac68k/dev/aed.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/dev/aed.c	Sun Mar 23 02:30:23 2014 -0400
@@ -90,6 +90,7 @@
 	.d_poll = aedpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = aedkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/dev/grf_compat.c
--- a/sys/arch/mac68k/dev/grf_compat.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/dev/grf_compat.c	Sun Mar 23 02:30:23 2014 -0400
@@ -77,6 +77,7 @@
 	.d_poll = nopoll,
 	.d_mmap = grfmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/dev/ite_compat.c
--- a/sys/arch/mac68k/dev/ite_compat.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/dev/ite_compat.c	Sun Mar 23 02:30:23 2014 -0400
@@ -73,6 +73,7 @@
 	.d_poll = itepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = itekqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/nubus/cpi_nubus.c
--- a/sys/arch/mac68k/nubus/cpi_nubus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/nubus/cpi_nubus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -125,6 +125,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/obio/asc.c
--- a/sys/arch/mac68k/obio/asc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/obio/asc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -131,6 +131,7 @@
 	.d_poll = nopoll,
 	.d_mmap = ascmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/mac68k/obio/iwm_fd.c
--- a/sys/arch/mac68k/obio/iwm_fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mac68k/obio/iwm_fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -254,6 +254,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/macppc/dev/aed.c
--- a/sys/arch/macppc/dev/aed.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/macppc/dev/aed.c	Sun Mar 23 02:30:23 2014 -0400
@@ -94,6 +94,7 @@
 	.d_poll = aedpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = aedkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/macppc/dev/apm.c
--- a/sys/arch/macppc/dev/apm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/macppc/dev/apm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -137,6 +137,7 @@
 	.d_poll = apmpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = apmkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 #endif
diff -r 5d108a5ad3cb sys/arch/macppc/dev/nvram.c
--- a/sys/arch/macppc/dev/nvram.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/macppc/dev/nvram.c	Sun Mar 23 02:30:23 2014 -0400
@@ -81,6 +81,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nvrammmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/macppc/dev/ofcons.c
--- a/sys/arch/macppc/dev/ofcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/macppc/dev/ofcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -89,6 +89,7 @@
 	.d_poll = ofcpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mips/adm5120/dev/uart.c
--- a/sys/arch/mips/adm5120/dev/uart.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mips/adm5120/dev/uart.c	Sun Mar 23 02:30:23 2014 -0400
@@ -76,6 +76,7 @@
 	.d_poll = uart_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mips/atheros/dev/athflash.c
--- a/sys/arch/mips/atheros/dev/athflash.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mips/atheros/dev/athflash.c	Sun Mar 23 02:30:23 2014 -0400
@@ -144,6 +144,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/mips/sibyte/dev/sbjcn.c
--- a/sys/arch/mips/sibyte/dev/sbjcn.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mips/sibyte/dev/sbjcn.c	Sun Mar 23 02:30:23 2014 -0400
@@ -185,6 +185,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mips/sibyte/dev/sbscn.c
--- a/sys/arch/mips/sibyte/dev/sbscn.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mips/sibyte/dev/sbscn.c	Sun Mar 23 02:30:23 2014 -0400
@@ -196,6 +196,7 @@
 	.d_poll = sbscnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/mipsco/obio/i82072.c
--- a/sys/arch/mipsco/obio/i82072.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/mipsco/obio/i82072.c	Sun Mar 23 02:30:23 2014 -0400
@@ -70,6 +70,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/news68k/news68k/romcons.c
--- a/sys/arch/news68k/news68k/romcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/news68k/news68k/romcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -92,6 +92,7 @@
 	.d_poll = romcons_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/prep/pnpbus/nvram_pnpbus.c
--- a/sys/arch/prep/pnpbus/nvram_pnpbus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/prep/pnpbus/nvram_pnpbus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -101,6 +101,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/arch/sandpoint/sandpoint/satmgr.c
--- a/sys/arch/sandpoint/sandpoint/satmgr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sandpoint/sandpoint/satmgr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -116,6 +116,7 @@
 	.d_poll = satpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = satkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/arch/sgimips/dev/scn.c
--- a/sys/arch/sgimips/dev/scn.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sgimips/dev/scn.c	Sun Mar 23 02:30:23 2014 -0400
@@ -165,6 +165,7 @@
 	.d_poll = scnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sh3/dev/sci.c
--- a/sys/arch/sh3/dev/sci.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sh3/dev/sci.c	Sun Mar 23 02:30:23 2014 -0400
@@ -258,6 +258,7 @@
 	.d_poll = scipoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sh3/dev/scif.c
--- a/sys/arch/sh3/dev/scif.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sh3/dev/scif.c	Sun Mar 23 02:30:23 2014 -0400
@@ -222,6 +222,7 @@
 	.d_poll = scifpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sh3/dev/wdog.c
--- a/sys/arch/sh3/dev/wdog.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sh3/dev/wdog.c	Sun Mar 23 02:30:23 2014 -0400
@@ -79,6 +79,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/shark/ofw/ofrom.c
--- a/sys/arch/shark/ofw/ofrom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/shark/ofw/ofrom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -80,6 +80,7 @@
 	.d_poll = nopoll,
 	.d_mmap = ofrommmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/shark/shark/opms.c
--- a/sys/arch/shark/shark/opms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/shark/shark/opms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -213,6 +213,7 @@
 	.d_poll = opmspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = opmskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/shark/shark/profile.c
--- a/sys/arch/shark/shark/profile.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/shark/shark/profile.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/shark/shark/scr.c
--- a/sys/arch/shark/shark/scr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/shark/shark/scr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -651,6 +651,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/cgeight.c
--- a/sys/arch/sparc/dev/cgeight.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/cgeight.c	Sun Mar 23 02:30:23 2014 -0400
@@ -164,6 +164,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cgeightmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/cgfour.c
--- a/sys/arch/sparc/dev/cgfour.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/cgfour.c	Sun Mar 23 02:30:23 2014 -0400
@@ -163,6 +163,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cgfourmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/cgfourteen.c
--- a/sys/arch/sparc/dev/cgfourteen.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/cgfourteen.c	Sun Mar 23 02:30:23 2014 -0400
@@ -130,6 +130,7 @@
 	.d_poll = cgfourteenpoll,
 	.d_mmap = cgfourteenmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/cgtwo.c
--- a/sys/arch/sparc/dev/cgtwo.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/cgtwo.c	Sun Mar 23 02:30:23 2014 -0400
@@ -114,6 +114,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cgtwommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/fd.c
--- a/sys/arch/sparc/dev/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -328,6 +328,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/kd.c
--- a/sys/arch/sparc/dev/kd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/kd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -120,6 +120,7 @@
 	.d_poll = kdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/dev/tctrl.c
--- a/sys/arch/sparc/dev/tctrl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/dev/tctrl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -98,6 +98,7 @@
 	.d_poll = tctrlpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = tctrlkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc/sparc/openprom.c
--- a/sys/arch/sparc/sparc/openprom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc/sparc/openprom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -73,6 +73,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc64/dev/fdc.c
--- a/sys/arch/sparc64/dev/fdc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc64/dev/fdc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -360,6 +360,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc64/dev/kd.c
--- a/sys/arch/sparc64/dev/kd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc64/dev/kd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -83,6 +83,7 @@
 	.d_poll = kdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc64/dev/pcons.c
--- a/sys/arch/sparc64/dev/pcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc64/dev/pcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -88,6 +88,7 @@
 	.d_poll = pconspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sparc64/dev/sab.c
--- a/sys/arch/sparc64/dev/sab.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sparc64/dev/sab.c	Sun Mar 23 02:30:23 2014 -0400
@@ -195,6 +195,7 @@
 	.d_poll = sabpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sun2/dev/kd.c
--- a/sys/arch/sun2/dev/kd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun2/dev/kd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -115,6 +115,7 @@
 	.d_poll = kdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sun2/dev/pcons.c
--- a/sys/arch/sun2/dev/pcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun2/dev/pcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -91,6 +91,7 @@
 	.d_poll = pconspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/bw2.c
--- a/sys/arch/sun3/dev/bw2.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/bw2.c	Sun Mar 23 02:30:23 2014 -0400
@@ -105,6 +105,7 @@
 	.d_poll = nopoll,
 	.d_mmap = bw2mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/cg2.c
--- a/sys/arch/sun3/dev/cg2.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/cg2.c	Sun Mar 23 02:30:23 2014 -0400
@@ -115,6 +115,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cg2mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/cg4.c
--- a/sys/arch/sun3/dev/cg4.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/cg4.c	Sun Mar 23 02:30:23 2014 -0400
@@ -137,6 +137,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cg4mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/fb.c
--- a/sys/arch/sun3/dev/fb.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/fb.c	Sun Mar 23 02:30:23 2014 -0400
@@ -76,6 +76,7 @@
 	.d_poll = nopoll,
 	.d_mmap = fbmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/fd.c
--- a/sys/arch/sun3/dev/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -300,6 +300,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/kd.c
--- a/sys/arch/sun3/dev/kd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/kd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -105,6 +105,7 @@
 	.d_poll = kdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/xd.c
--- a/sys/arch/sun3/dev/xd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/xd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -307,6 +307,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/sun3/dev/xy.c
--- a/sys/arch/sun3/dev/xy.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/sun3/dev/xy.c	Sun Mar 23 02:30:23 2014 -0400
@@ -238,6 +238,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/usermode/dev/ttycons.c
--- a/sys/arch/usermode/dev/ttycons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/usermode/dev/ttycons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -95,6 +95,7 @@
 	.d_poll = ttycons_poll,
 	.d_kqfilter = ttykqfilter,
 	.d_flag = D_TTY,
+	.d_discard = nodiscard,
 };
 
 static void	ttycons_start(struct tty *);
diff -r 5d108a5ad3cb sys/arch/vax/mba/hp.c
--- a/sys/arch/vax/mba/hp.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/mba/hp.c	Sun Mar 23 02:30:23 2014 -0400
@@ -116,6 +116,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/uba/qv.c
--- a/sys/arch/vax/uba/qv.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/uba/qv.c	Sun Mar 23 02:30:23 2014 -0400
@@ -290,6 +290,7 @@
 	.d_poll = qvpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = qvkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/vax/cfl.c
--- a/sys/arch/vax/vax/cfl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vax/cfl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -133,6 +133,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/vax/crl.c
--- a/sys/arch/vax/vax/crl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vax/crl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -87,6 +87,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/vax/crx.c
--- a/sys/arch/vax/vax/crx.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vax/crx.c	Sun Mar 23 02:30:23 2014 -0400
@@ -69,6 +69,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/vax/ctu.c
--- a/sys/arch/vax/vax/ctu.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vax/ctu.c	Sun Mar 23 02:30:23 2014 -0400
@@ -121,6 +121,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 #endif
diff -r 5d108a5ad3cb sys/arch/vax/vax/gencons.c
--- a/sys/arch/vax/vax/gencons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vax/gencons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -97,6 +97,7 @@
 	.d_poll = gencnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/vax/vsa/hdc9224.c
--- a/sys/arch/vax/vsa/hdc9224.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/vax/vsa/hdc9224.c	Sun Mar 23 02:30:23 2014 -0400
@@ -216,6 +216,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/bmd.c
--- a/sys/arch/x68k/dev/bmd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/bmd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/fd.c
--- a/sys/arch/x68k/dev/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -292,6 +292,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/grf.c
--- a/sys/arch/x68k/dev/grf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/grf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -109,6 +109,7 @@
 	.d_poll = nopoll,
 	.d_mmap = grfmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/ite.c
--- a/sys/arch/x68k/dev/ite.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/ite.c	Sun Mar 23 02:30:23 2014 -0400
@@ -176,6 +176,7 @@
 	.d_poll = itepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/kbd.c
--- a/sys/arch/x68k/dev/kbd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/kbd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = kbdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = kbdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/ms.c
--- a/sys/arch/x68k/dev/ms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/ms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -175,6 +175,7 @@
 	.d_poll = mspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = mskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/opmbell.c
--- a/sys/arch/x68k/dev/opmbell.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/opmbell.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/par.c
--- a/sys/arch/x68k/dev/par.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/par.c	Sun Mar 23 02:30:23 2014 -0400
@@ -135,6 +135,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/x68k/dev/sram.c
--- a/sys/arch/x68k/dev/sram.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/x68k/dev/sram.c	Sun Mar 23 02:30:23 2014 -0400
@@ -85,6 +85,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/arch/xen/xen/xbd_xenbus.c
--- a/sys/arch/xen/xen/xbd_xenbus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/xen/xen/xbd_xenbus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -212,6 +212,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/arch/xen/xen/xencons.c
--- a/sys/arch/xen/xen/xencons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/xen/xen/xencons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -132,6 +132,7 @@
 	.d_poll = xencons_poll,
 	.d_mmap = NULL,	/* XXX: is this safe? - dholland 20140315 */
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/arch/xen/xen/xenevt.c
--- a/sys/arch/xen/xen/xenevt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/arch/xen/xen/xenevt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -98,6 +98,7 @@
 	.d_poll = nopoll,
 	.d_mmap = xenevtmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/coda/coda_psdev.c
--- a/sys/coda/coda_psdev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/coda/coda_psdev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -121,6 +121,7 @@
 	.d_poll = vc_nb_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = vc_nb_kqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/compat/svr4/svr4_net.c
--- a/sys/compat/svr4/svr4_net.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/compat/svr4/svr4_net.c	Sun Mar 23 02:30:23 2014 -0400
@@ -86,6 +86,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/altmem/altmem.c
--- a/sys/dev/altmem/altmem.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/altmem/altmem.c	Sun Mar 23 02:30:23 2014 -0400
@@ -80,6 +80,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 static struct dkdriver altmemdkdriver = { altmemstrategy, minphys };
diff -r 5d108a5ad3cb sys/dev/apm/apm.c
--- a/sys/dev/apm/apm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/apm/apm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -124,6 +124,7 @@
 	.d_poll = apmpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = apmkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/arcbios/arcbios_tty.c
--- a/sys/dev/arcbios/arcbios_tty.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/arcbios/arcbios_tty.c	Sun Mar 23 02:30:23 2014 -0400
@@ -74,6 +74,7 @@
 	.d_poll = arcbios_ttypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY,
 };
 
diff -r 5d108a5ad3cb sys/dev/ata/ata.c
--- a/sys/dev/ata/ata.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ata/ata.c	Sun Mar 23 02:30:23 2014 -0400
@@ -116,6 +116,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ata/wd.c
--- a/sys/dev/ata/wd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ata/wd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -163,6 +163,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/audio.c
--- a/sys/dev/audio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/audio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -359,6 +359,7 @@
 	.d_poll = audiopoll,
 	.d_mmap = audiommap,
 	.d_kqfilter = audiokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/bio.c
--- a/sys/dev/bio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/bio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -78,6 +78,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/bluetooth/bthub.c
--- a/sys/dev/bluetooth/bthub.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/bluetooth/bthub.c	Sun Mar 23 02:30:23 2014 -0400
@@ -80,6 +80,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/ccd.c
--- a/sys/dev/ccd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ccd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -200,6 +200,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/cgd.c
--- a/sys/dev/cgd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/cgd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -90,6 +90,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/clockctl.c
--- a/sys/dev/clockctl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/clockctl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -67,6 +67,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/cons.c
--- a/sys/dev/cons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/cons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -77,6 +77,7 @@
 	.d_poll = cnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = cnkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/dec/dz.c
--- a/sys/dev/dec/dz.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/dec/dz.c	Sun Mar 23 02:30:23 2014 -0400
@@ -197,6 +197,7 @@
 	.d_poll = dzpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/dkwedge/dk.c
--- a/sys/dev/dkwedge/dk.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/dkwedge/dk.c	Sun Mar 23 02:30:23 2014 -0400
@@ -131,6 +131,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/dm/device-mapper.c
--- a/sys/dev/dm/device-mapper.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/dm/device-mapper.c	Sun Mar 23 02:30:23 2014 -0400
@@ -99,6 +99,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/dmover/dmover_io.c
--- a/sys/dev/dmover/dmover_io.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/dmover/dmover_io.c	Sun Mar 23 02:30:23 2014 -0400
@@ -143,6 +143,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/dtv/dtv_device.c
--- a/sys/dev/dtv/dtv_device.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/dtv/dtv_device.c	Sun Mar 23 02:30:23 2014 -0400
@@ -64,6 +64,7 @@
 	.d_poll = dtvpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE,
 };
 
diff -r 5d108a5ad3cb sys/dev/filemon/filemon.c
--- a/sys/dev/filemon/filemon.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/filemon/filemon.c	Sun Mar 23 02:30:23 2014 -0400
@@ -60,6 +60,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/flash/flash.c
--- a/sys/dev/flash/flash.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/flash/flash.c	Sun Mar 23 02:30:23 2014 -0400
@@ -116,6 +116,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/fss.c
--- a/sys/dev/fss.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/fss.c	Sun Mar 23 02:30:23 2014 -0400
@@ -120,6 +120,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/gpib/ct.c
--- a/sys/dev/gpib/ct.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpib/ct.c	Sun Mar 23 02:30:23 2014 -0400
@@ -202,6 +202,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/gpib/gpib.c
--- a/sys/dev/gpib/gpib.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpib/gpib.c	Sun Mar 23 02:30:23 2014 -0400
@@ -88,6 +88,7 @@
 	.d_poll = gpibpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/gpib/mt.c
--- a/sys/dev/gpib/mt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpib/mt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -182,6 +182,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/gpib/ppi.c
--- a/sys/dev/gpib/ppi.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpib/ppi.c	Sun Mar 23 02:30:23 2014 -0400
@@ -136,6 +136,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/gpib/rd.c
--- a/sys/dev/gpib/rd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpib/rd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -276,6 +276,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/gpio/gpio.c
--- a/sys/dev/gpio/gpio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/gpio/gpio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -110,6 +110,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/hpc/apm/apmdev.c
--- a/sys/dev/hpc/apm/apmdev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/hpc/apm/apmdev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -132,6 +132,7 @@
 	.d_poll = apmdevpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = apmdevkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/hpc/biconsdev.c
--- a/sys/dev/hpc/biconsdev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/hpc/biconsdev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = biconsdevpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/hpc/btnmgr.c
--- a/sys/dev/hpc/btnmgr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/hpc/btnmgr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -111,6 +111,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 #endif /* notyet */
diff -r 5d108a5ad3cb sys/dev/i2c/at24cxx.c
--- a/sys/dev/i2c/at24cxx.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/at24cxx.c	Sun Mar 23 02:30:23 2014 -0400
@@ -104,6 +104,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/ds1307.c
--- a/sys/dev/i2c/ds1307.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/ds1307.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/i2c.c
--- a/sys/dev/i2c/i2c.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/i2c.c	Sun Mar 23 02:30:23 2014 -0400
@@ -78,6 +78,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/m41st84.c
--- a/sys/dev/i2c/m41st84.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/m41st84.c	Sun Mar 23 02:30:23 2014 -0400
@@ -88,6 +88,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif
diff -r 5d108a5ad3cb sys/dev/i2c/m41t00.c
--- a/sys/dev/i2c/m41t00.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/m41t00.c	Sun Mar 23 02:30:23 2014 -0400
@@ -86,6 +86,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/max6900.c
--- a/sys/dev/i2c/max6900.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/max6900.c	Sun Mar 23 02:30:23 2014 -0400
@@ -83,6 +83,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/pcf8583.c
--- a/sys/dev/i2c/pcf8583.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/pcf8583.c	Sun Mar 23 02:30:23 2014 -0400
@@ -91,6 +91,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2c/x1226.c
--- a/sys/dev/i2c/x1226.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2c/x1226.c	Sun Mar 23 02:30:23 2014 -0400
@@ -83,6 +83,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/i2o/dpti.c
--- a/sys/dev/i2o/dpti.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2o/dpti.c	Sun Mar 23 02:30:23 2014 -0400
@@ -147,6 +147,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/i2o/iop.c
--- a/sys/dev/i2o/iop.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/i2o/iop.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/cd18xx.c
--- a/sys/dev/ic/cd18xx.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/cd18xx.c	Sun Mar 23 02:30:23 2014 -0400
@@ -148,6 +148,7 @@
 	.d_poll = cdttypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/clmpcc.c
--- a/sys/dev/ic/clmpcc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/clmpcc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = clmpccpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/com.c
--- a/sys/dev/ic/com.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/com.c	Sun Mar 23 02:30:23 2014 -0400
@@ -225,6 +225,7 @@
 	.d_poll = compoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/cy.c
--- a/sys/dev/ic/cy.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/cy.c	Sun Mar 23 02:30:23 2014 -0400
@@ -68,6 +68,7 @@
 	.d_poll = cypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/dpt.c
--- a/sys/dev/ic/dpt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/dpt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -147,6 +147,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/icp_ioctl.c
--- a/sys/dev/ic/icp_ioctl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/icp_ioctl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -103,6 +103,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/joy.c
--- a/sys/dev/ic/joy.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/joy.c	Sun Mar 23 02:30:23 2014 -0400
@@ -112,6 +112,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/lpt.c
--- a/sys/dev/ic/lpt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/lpt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/mfi.c
--- a/sys/dev/ic/mfi.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/mfi.c	Sun Mar 23 02:30:23 2014 -0400
@@ -194,6 +194,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/mlx.c
--- a/sys/dev/ic/mlx.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/mlx.c	Sun Mar 23 02:30:23 2014 -0400
@@ -141,6 +141,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/rrunner.c
--- a/sys/dev/ic/rrunner.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/rrunner.c	Sun Mar 23 02:30:23 2014 -0400
@@ -134,6 +134,7 @@
 	.d_mmap = nommap,
 #endif
 	.d_kqfilter = nullkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ic/tpm.c
--- a/sys/dev/ic/tpm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/tpm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -88,6 +88,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 }; 
 
diff -r 5d108a5ad3cb sys/dev/ic/z8530tty.c
--- a/sys/dev/ic/z8530tty.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ic/z8530tty.c	Sun Mar 23 02:30:23 2014 -0400
@@ -262,6 +262,7 @@
 	.d_poll = zspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ieee1394/fwdev.c
--- a/sys/dev/ieee1394/fwdev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ieee1394/fwdev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -93,6 +93,7 @@
 	.d_poll = fw_poll,
 	.d_mmap = fw_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ir/cir.c
--- a/sys/dev/ir/cir.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ir/cir.c	Sun Mar 23 02:30:23 2014 -0400
@@ -65,6 +65,7 @@
 	.d_poll = cirpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ir/irframe.c
--- a/sys/dev/ir/irframe.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ir/irframe.c	Sun Mar 23 02:30:23 2014 -0400
@@ -77,6 +77,7 @@
 	.d_poll = irframepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = irframekqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/fd.c
--- a/sys/dev/isa/fd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/fd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -245,6 +245,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/isv.c
--- a/sys/dev/isa/isv.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/isv.c	Sun Mar 23 02:30:23 2014 -0400
@@ -115,6 +115,7 @@
 	.d_poll = nopoll,
 	.d_mmap = isv_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/mcd.c
--- a/sys/dev/isa/mcd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/mcd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -229,6 +229,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/satlink.c
--- a/sys/dev/isa/satlink.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/satlink.c	Sun Mar 23 02:30:23 2014 -0400
@@ -119,6 +119,7 @@
 	.d_poll = satlinkpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = satlinkkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/spkr.c
--- a/sys/dev/isa/spkr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/spkr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -84,6 +84,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/isa/wt.c
--- a/sys/dev/isa/wt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/isa/wt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -179,6 +179,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/iscsi/iscsi_main.c
--- a/sys/dev/iscsi/iscsi_main.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/iscsi/iscsi_main.c	Sun Mar 23 02:30:23 2014 -0400
@@ -100,6 +100,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/kttcp.c
--- a/sys/dev/kttcp.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/kttcp.c	Sun Mar 23 02:30:23 2014 -0400
@@ -85,6 +85,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ld.c
--- a/sys/dev/ld.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ld.c	Sun Mar 23 02:30:23 2014 -0400
@@ -103,6 +103,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/lockstat.c
--- a/sys/dev/lockstat.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/lockstat.c	Sun Mar 23 02:30:23 2014 -0400
@@ -121,6 +121,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/marvell/gtmpsc.c
--- a/sys/dev/marvell/gtmpsc.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/marvell/gtmpsc.c	Sun Mar 23 02:30:23 2014 -0400
@@ -168,6 +168,7 @@
 	.d_poll = gtmpscpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/mca/ed_mca.c
--- a/sys/dev/mca/ed_mca.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/mca/ed_mca.c	Sun Mar 23 02:30:23 2014 -0400
@@ -117,6 +117,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/md.c
--- a/sys/dev/md.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/md.c	Sun Mar 23 02:30:23 2014 -0400
@@ -128,6 +128,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/midi.c
--- a/sys/dev/midi.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/midi.c	Sun Mar 23 02:30:23 2014 -0400
@@ -119,6 +119,7 @@
 	.d_poll = midipoll,
 	.d_mmap = nommap,
 	.d_kqfilter = midikqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/mm.c
--- a/sys/dev/mm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/mm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -73,6 +73,7 @@
 	.d_poll = nopoll,
 	.d_mmap = mm_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_MPSAFE
 };
 
@@ -88,6 +89,7 @@
 	.d_poll = nopoll,
 	.d_mmap = mm_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_MPSAFE
 };
 #endif
diff -r 5d108a5ad3cb sys/dev/mscp/mscp_disk.c
--- a/sys/dev/mscp/mscp_disk.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/mscp/mscp_disk.c	Sun Mar 23 02:30:23 2014 -0400
@@ -178,6 +178,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
@@ -600,6 +601,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
@@ -672,6 +674,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/mscp/mscp_tape.c
--- a/sys/dev/mscp/mscp_tape.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/mscp/mscp_tape.c	Sun Mar 23 02:30:23 2014 -0400
@@ -145,6 +145,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/mvme/lpt_mvme.c
--- a/sys/dev/mvme/lpt_mvme.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/mvme/lpt_mvme.c	Sun Mar 23 02:30:23 2014 -0400
@@ -140,6 +140,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/nullcons_subr.c
--- a/sys/dev/nullcons_subr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/nullcons_subr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -62,6 +62,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ofw/ofcons.c
--- a/sys/dev/ofw/ofcons.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ofw/ofcons.c	Sun Mar 23 02:30:23 2014 -0400
@@ -88,6 +88,7 @@
 	.d_poll = ofcons_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/ofw/ofdisk.c
--- a/sys/dev/ofw/ofdisk.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ofw/ofdisk.c	Sun Mar 23 02:30:23 2014 -0400
@@ -102,6 +102,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/ofw/openfirmio.c
--- a/sys/dev/ofw/openfirmio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ofw/openfirmio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -76,6 +76,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/onewire/onewire.c
--- a/sys/dev/onewire/onewire.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/onewire/onewire.c	Sun Mar 23 02:30:23 2014 -0400
@@ -90,6 +90,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pad/pad.c
--- a/sys/dev/pad/pad.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pad/pad.c	Sun Mar 23 02:30:23 2014 -0400
@@ -133,6 +133,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE,
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/agp.c
--- a/sys/dev/pci/agp.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/agp.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1112,6 +1112,7 @@
 	.d_poll = nopoll,
 	.d_mmap = agpmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/amr.c
--- a/sys/dev/pci/amr.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/amr.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };      
 
diff -r 5d108a5ad3cb sys/dev/pci/bktr/bktr_os.c
--- a/sys/dev/pci/bktr/bktr_os.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/bktr/bktr_os.c	Sun Mar 23 02:30:23 2014 -0400
@@ -190,6 +190,7 @@
 	.d_poll = nopoll,
 	.d_mmap = bktr_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD __ */
diff -r 5d108a5ad3cb sys/dev/pci/cz.c
--- a/sys/dev/pci/cz.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/cz.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1545,6 +1545,7 @@
 	.d_poll = czttypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/hdaudio/hdaudio.c
--- a/sys/dev/pci/hdaudio/hdaudio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/hdaudio/hdaudio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -68,6 +68,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/mly.c
--- a/sys/dev/pci/mly.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/mly.c	Sun Mar 23 02:30:23 2014 -0400
@@ -172,6 +172,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/pci_usrreq.c
--- a/sys/dev/pci/pci_usrreq.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/pci_usrreq.c	Sun Mar 23 02:30:23 2014 -0400
@@ -180,6 +180,7 @@
 	.d_poll = nopoll,
 	.d_mmap = pcimmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/twa.c
--- a/sys/dev/pci/twa.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/twa.c	Sun Mar 23 02:30:23 2014 -0400
@@ -2283,6 +2283,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/pci/twe.c
--- a/sys/dev/pci/twe.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/pci/twe.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1891,6 +1891,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ppbus/lpt.c
--- a/sys/dev/ppbus/lpt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ppbus/lpt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -120,6 +120,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/ppbus/pps_ppbus.c
--- a/sys/dev/ppbus/pps_ppbus.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/ppbus/pps_ppbus.c	Sun Mar 23 02:30:23 2014 -0400
@@ -72,6 +72,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/putter/putter.c
--- a/sys/dev/putter/putter.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/putter/putter.c	Sun Mar 23 02:30:23 2014 -0400
@@ -72,6 +72,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/dhu.c
--- a/sys/dev/qbus/dhu.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/dhu.c	Sun Mar 23 02:30:23 2014 -0400
@@ -203,6 +203,7 @@
 	.d_poll = dhupoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/dl.c
--- a/sys/dev/qbus/dl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/dl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -168,6 +168,7 @@
 	.d_poll = dlpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/qd.c
--- a/sys/dev/qbus/qd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/qd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -354,6 +354,7 @@
 	.d_poll = qdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = qdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/rf.c
--- a/sys/dev/qbus/rf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/rf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -138,6 +138,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/rl.c
--- a/sys/dev/qbus/rl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/rl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -117,6 +117,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/qbus/ts.c
--- a/sys/dev/qbus/ts.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/qbus/ts.c	Sun Mar 23 02:30:23 2014 -0400
@@ -198,6 +198,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/radio.c
--- a/sys/dev/radio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/radio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -73,6 +73,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/raidframe/rf_netbsdkintf.c
--- a/sys/dev/raidframe/rf_netbsdkintf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/raidframe/rf_netbsdkintf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -226,6 +226,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/rndpseudo.c
--- a/sys/dev/rndpseudo.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/rndpseudo.c	Sun Mar 23 02:30:23 2014 -0400
@@ -137,6 +137,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/sbus/bpp.c
--- a/sys/dev/sbus/bpp.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sbus/bpp.c	Sun Mar 23 02:30:23 2014 -0400
@@ -136,6 +136,7 @@
 	.d_poll = bpppoll,
 	.d_mmap = nommap,
 	.d_kqfilter = bppkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/sbus/magma.c
--- a/sys/dev/sbus/magma.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sbus/magma.c	Sun Mar 23 02:30:23 2014 -0400
@@ -198,6 +198,7 @@
 	.d_poll = mttypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -217,6 +218,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sbus/p9100.c
--- a/sys/dev/sbus/p9100.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sbus/p9100.c	Sun Mar 23 02:30:23 2014 -0400
@@ -183,6 +183,7 @@
 	.d_poll = nopoll,
 	.d_mmap = p9100mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/sbus/spif.c
--- a/sys/dev/sbus/spif.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sbus/spif.c	Sun Mar 23 02:30:23 2014 -0400
@@ -104,6 +104,7 @@
 	.d_poll = stty_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -125,6 +126,7 @@
 	.d_poll = sbpp_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sbus/tcx.c
--- a/sys/dev/sbus/tcx.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sbus/tcx.c	Sun Mar 23 02:30:23 2014 -0400
@@ -168,6 +168,7 @@
 	.d_poll = nopoll,
 	.d_mmap = tcxmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/cd.c
--- a/sys/dev/scsipi/cd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/cd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -225,6 +225,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/ch.c
--- a/sys/dev/scsipi/ch.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/ch.c	Sun Mar 23 02:30:23 2014 -0400
@@ -131,6 +131,7 @@
 	.d_poll = chpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = chkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/if_se.c
--- a/sys/dev/scsipi/if_se.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/if_se.c	Sun Mar 23 02:30:23 2014 -0400
@@ -247,6 +247,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/scsiconf.c
--- a/sys/dev/scsipi/scsiconf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/scsiconf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -116,6 +116,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/sd.c
--- a/sys/dev/scsipi/sd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/sd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -178,6 +178,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/ses.c
--- a/sys/dev/scsipi/ses.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/ses.c	Sun Mar 23 02:30:23 2014 -0400
@@ -147,6 +147,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/ss.c
--- a/sys/dev/scsipi/ss.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/ss.c	Sun Mar 23 02:30:23 2014 -0400
@@ -99,6 +99,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/st.c
--- a/sys/dev/scsipi/st.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/st.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TAPE
 };
 
diff -r 5d108a5ad3cb sys/dev/scsipi/uk.c
--- a/sys/dev/scsipi/uk.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/scsipi/uk.c	Sun Mar 23 02:30:23 2014 -0400
@@ -86,6 +86,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sequencer.c
--- a/sys/dev/sequencer.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sequencer.c	Sun Mar 23 02:30:23 2014 -0400
@@ -167,6 +167,7 @@
 	.d_poll = sequencerpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = sequencerkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 static LIST_HEAD(, sequencer_softc) sequencers = LIST_HEAD_INITIALIZER(sequencers);
@@ -1605,6 +1606,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/spi/spiflash.c
--- a/sys/dev/spi/spiflash.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/spi/spiflash.c	Sun Mar 23 02:30:23 2014 -0400
@@ -162,6 +162,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK,
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/bwtwo.c
--- a/sys/dev/sun/bwtwo.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/bwtwo.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = nopoll,
 	.d_mmap = bwtwommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/cgsix.c
--- a/sys/dev/sun/cgsix.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/cgsix.c	Sun Mar 23 02:30:23 2014 -0400
@@ -135,6 +135,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cgsixmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/cgthree.c
--- a/sys/dev/sun/cgthree.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/cgthree.c	Sun Mar 23 02:30:23 2014 -0400
@@ -91,6 +91,7 @@
 	.d_poll = nopoll,
 	.d_mmap = cgthreemmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/fb.c
--- a/sys/dev/sun/fb.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/fb.c	Sun Mar 23 02:30:23 2014 -0400
@@ -97,6 +97,7 @@
 	.d_poll = fbpoll,
 	.d_mmap = fbmmap,
 	.d_kqfilter = fbkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/kbd.c
--- a/sys/dev/sun/kbd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/kbd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -99,6 +99,7 @@
 	.d_poll = kbdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = kbdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sun/ms.c
--- a/sys/dev/sun/ms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sun/ms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -100,6 +100,7 @@
 	.d_poll = mspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = mskqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/sysmon/sysmon.c
--- a/sys/dev/sysmon/sysmon.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/sysmon/sysmon.c	Sun Mar 23 02:30:23 2014 -0400
@@ -71,6 +71,7 @@
 	.d_poll = sysmonpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = sysmonkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/tc/stic.c
--- a/sys/dev/tc/stic.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/tc/stic.c	Sun Mar 23 02:30:23 2014 -0400
@@ -164,6 +164,7 @@
 	.d_poll = nopoll,
 	.d_mmap = sticmmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = 0
 };
 
diff -r 5d108a5ad3cb sys/dev/tprof/tprof.c
--- a/sys/dev/tprof/tprof.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/tprof/tprof.c	Sun Mar 23 02:30:23 2014 -0400
@@ -652,6 +652,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/ucom.c
--- a/sys/dev/usb/ucom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/ucom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -164,6 +164,7 @@
 	.d_poll = ucompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/ucycom.c
--- a/sys/dev/usb/ucycom.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/ucycom.c	Sun Mar 23 02:30:23 2014 -0400
@@ -158,6 +158,7 @@
 	.d_poll = ucycompoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/ugen.c
--- a/sys/dev/usb/ugen.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/ugen.c	Sun Mar 23 02:30:23 2014 -0400
@@ -151,6 +151,7 @@
 	.d_poll = ugenpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ugenkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/uhid.c
--- a/sys/dev/usb/uhid.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/uhid.c	Sun Mar 23 02:30:23 2014 -0400
@@ -126,6 +126,7 @@
 	.d_poll = uhidpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = uhidkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/uhso.c
--- a/sys/dev/usb/uhso.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/uhso.c	Sun Mar 23 02:30:23 2014 -0400
@@ -388,6 +388,7 @@
 	.d_poll = uhso_tty_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/ulpt.c
--- a/sys/dev/usb/ulpt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/ulpt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -140,6 +140,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/urio.c
--- a/sys/dev/usb/urio.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/urio.c	Sun Mar 23 02:30:23 2014 -0400
@@ -85,6 +85,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/usb.c
--- a/sys/dev/usb/usb.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/usb.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = usbpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = usbkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/uscanner.c
--- a/sys/dev/usb/uscanner.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/uscanner.c	Sun Mar 23 02:30:23 2014 -0400
@@ -251,6 +251,7 @@
 	.d_poll = uscannerpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = uscannerkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/usb/utoppy.c
--- a/sys/dev/usb/utoppy.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/usb/utoppy.c	Sun Mar 23 02:30:23 2014 -0400
@@ -189,6 +189,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/verified_exec.c
--- a/sys/dev/verified_exec.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/verified_exec.c	Sun Mar 23 02:30:23 2014 -0400
@@ -80,6 +80,7 @@
 #endif
 	.d_poll = nopoll,
 	.d_mmap = nommap,
+	.d_discard = nodiscard,
 #if defined(__NetBSD__)
        .d_kqfilter = nokqfilter,
        .d_flag = D_OTHER,
diff -r 5d108a5ad3cb sys/dev/video.c
--- a/sys/dev/video.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/video.c	Sun Mar 23 02:30:23 2014 -0400
@@ -215,6 +215,7 @@
 	.d_poll = videopoll,
 	.d_mmap = videommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/vme/xd.c
--- a/sys/dev/vme/xd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/vme/xd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -313,6 +313,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/vme/xy.c
--- a/sys/dev/vme/xy.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/vme/xy.c	Sun Mar 23 02:30:23 2014 -0400
@@ -229,6 +229,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/vnd.c
--- a/sys/dev/vnd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/vnd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -218,6 +218,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/dev/wscons/wsdisplay.c
--- a/sys/dev/wscons/wsdisplay.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/wscons/wsdisplay.c	Sun Mar 23 02:30:23 2014 -0400
@@ -199,6 +199,7 @@
 	.d_poll = wsdisplaypoll,
 	.d_mmap = wsdisplaymmap,
 	.d_kqfilter = wsdisplaykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
diff -r 5d108a5ad3cb sys/dev/wscons/wskbd.c
--- a/sys/dev/wscons/wskbd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/wscons/wskbd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -307,6 +307,7 @@
 	.d_poll = wskbdpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = wskbdkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/wscons/wsmouse.c
--- a/sys/dev/wscons/wsmouse.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/wscons/wsmouse.c	Sun Mar 23 02:30:23 2014 -0400
@@ -213,6 +213,7 @@
 	.d_poll = wsmousepoll,
 	.d_mmap = nommap,
 	.d_kqfilter = wsmousekqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/wscons/wsmux.c
--- a/sys/dev/wscons/wsmux.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/wscons/wsmux.c	Sun Mar 23 02:30:23 2014 -0400
@@ -134,6 +134,7 @@
 	.d_poll = wsmuxpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = wsmuxkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/dev/wsfont/wsfontdev.c
--- a/sys/dev/wsfont/wsfontdev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dev/wsfont/wsfontdev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -117,5 +117,6 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
diff -r 5d108a5ad3cb sys/dist/pf/net/pf_ioctl.c
--- a/sys/dist/pf/net/pf_ioctl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/dist/pf/net/pf_ioctl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -179,6 +179,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/external/bsd/drm/dist/bsd-core/drm_drv.c
--- a/sys/external/bsd/drm/dist/bsd-core/drm_drv.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/external/bsd/drm/dist/bsd-core/drm_drv.c	Sun Mar 23 02:30:23 2014 -0400
@@ -314,6 +314,7 @@
 	.d_poll = drm_poll,
 	.d_mmap = drm_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY | D_NEGOFFSAFE
 };
 
diff -r 5d108a5ad3cb sys/external/bsd/drm2/drm/drm_drv.c
--- a/sys/external/bsd/drm2/drm/drm_drv.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/external/bsd/drm2/drm/drm_drv.c	Sun Mar 23 02:30:23 2014 -0400
@@ -272,6 +272,7 @@
 	.d_poll = nopoll,
 	.d_mmap = drm_mmap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	/* XXX was D_TTY | D_NEGOFFSAFE */
 	/* XXX Add D_MPSAFE some day... */
 	.d_flag = D_NEGOFFSAFE,
diff -r 5d108a5ad3cb sys/external/bsd/ipf/netinet/ip_fil_netbsd.c
--- a/sys/external/bsd/ipf/netinet/ip_fil_netbsd.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/external/bsd/ipf/netinet/ip_fil_netbsd.c	Sun Mar 23 02:30:23 2014 -0400
@@ -140,6 +140,7 @@
 #if  (__NetBSD_Version__ >= 200000000)
 	.d_kqfilter = nokqfilter,
 #endif
+	.d_discard = nodiscard,
 #ifdef D_OTHER
 	.d_flag = D_OTHER
 #else
diff -r 5d108a5ad3cb sys/external/bsd/vchiq/dist/interface/vchiq_arm/vchiq_arm.c
--- a/sys/external/bsd/vchiq/dist/interface/vchiq_arm/vchiq_arm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/external/bsd/vchiq/dist/interface/vchiq_arm/vchiq_arm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -188,6 +188,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/kern/kern_cpu.c
--- a/sys/kern/kern_cpu.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/kern_cpu.c	Sun Mar 23 02:30:23 2014 -0400
@@ -112,6 +112,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/kern/kern_descrip.c
--- a/sys/kern/kern_descrip.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/kern_descrip.c	Sun Mar 23 02:30:23 2014 -0400
@@ -132,6 +132,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/kern/kern_drvctl.c
--- a/sys/kern/kern_drvctl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/kern_drvctl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -76,6 +76,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/kern/kern_ksyms.c
--- a/sys/kern/kern_ksyms.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/kern_ksyms.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1145,5 +1145,6 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nullkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
diff -r 5d108a5ad3cb sys/kern/subr_log.c
--- a/sys/kern/subr_log.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/subr_log.c	Sun Mar 23 02:30:23 2014 -0400
@@ -407,5 +407,6 @@
 	.d_poll = logpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = logkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
diff -r 5d108a5ad3cb sys/kern/tty_ptm.c
--- a/sys/kern/tty_ptm.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/tty_ptm.c	Sun Mar 23 02:30:23 2014 -0400
@@ -76,6 +76,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 #else
@@ -417,6 +418,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 #endif
diff -r 5d108a5ad3cb sys/kern/tty_pty.c
--- a/sys/kern/tty_pty.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/tty_pty.c	Sun Mar 23 02:30:23 2014 -0400
@@ -119,6 +119,7 @@
 	.d_poll = ptcpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ptckqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -133,6 +134,7 @@
 	.d_poll = ptspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -153,6 +155,7 @@
 	.d_poll = ptcpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ptckqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 
@@ -167,6 +170,7 @@
 	.d_poll = ptspoll,
 	.d_mmap = nommap,
 	.d_kqfilter = ttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
 #endif /* defined(pmax) */
diff -r 5d108a5ad3cb sys/kern/tty_tty.c
--- a/sys/kern/tty_tty.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/kern/tty_tty.c	Sun Mar 23 02:30:23 2014 -0400
@@ -167,5 +167,6 @@
 	.d_poll = cttypoll,
 	.d_mmap = nommap,
 	.d_kqfilter = cttykqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_TTY
 };
diff -r 5d108a5ad3cb sys/modules/lua/lua.c
--- a/sys/modules/lua/lua.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/modules/lua/lua.c	Sun Mar 23 02:30:23 2014 -0400
@@ -102,6 +102,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/net/bpf.c
--- a/sys/net/bpf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/net/bpf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -191,6 +191,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/net/if_srt.c
--- a/sys/net/if_srt.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/net/if_srt.c	Sun Mar 23 02:30:23 2014 -0400
@@ -492,5 +492,6 @@
 	.d_poll = nullpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nullkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
diff -r 5d108a5ad3cb sys/net/if_tap.c
--- a/sys/net/if_tap.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/net/if_tap.c	Sun Mar 23 02:30:23 2014 -0400
@@ -184,6 +184,7 @@
 	.d_poll = tap_cdev_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = tap_cdev_kqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/net/if_tun.c
--- a/sys/net/if_tun.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/net/if_tun.c	Sun Mar 23 02:30:23 2014 -0400
@@ -106,6 +106,7 @@
 	.d_poll = tunpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = tunkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/net/npf/npf.c
--- a/sys/net/npf/npf.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/net/npf/npf.c	Sun Mar 23 02:30:23 2014 -0400
@@ -83,6 +83,7 @@
 	.d_poll = npf_dev_poll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/netisdn/i4b_ctl.c
--- a/sys/netisdn/i4b_ctl.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netisdn/i4b_ctl.c	Sun Mar 23 02:30:23 2014 -0400
@@ -164,6 +164,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD__ */
diff -r 5d108a5ad3cb sys/netisdn/i4b_i4bdrv.c
--- a/sys/netisdn/i4b_i4bdrv.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netisdn/i4b_i4bdrv.c	Sun Mar 23 02:30:23 2014 -0400
@@ -206,6 +206,7 @@
 	.d_poll = isdnpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = isdnkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD__ */
diff -r 5d108a5ad3cb sys/netisdn/i4b_rbch.c
--- a/sys/netisdn/i4b_rbch.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netisdn/i4b_rbch.c	Sun Mar 23 02:30:23 2014 -0400
@@ -200,6 +200,7 @@
 	.d_poll = isdnbchanpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD__ */
diff -r 5d108a5ad3cb sys/netisdn/i4b_tel.c
--- a/sys/netisdn/i4b_tel.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netisdn/i4b_tel.c	Sun Mar 23 02:30:23 2014 -0400
@@ -204,6 +204,7 @@
 	.d_poll = isdntelpoll,
 	.d_mmap = nommap,
 	.d_kqfilter = isdntelkqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD__ */
diff -r 5d108a5ad3cb sys/netisdn/i4b_trace.c
--- a/sys/netisdn/i4b_trace.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netisdn/i4b_trace.c	Sun Mar 23 02:30:23 2014 -0400
@@ -99,6 +99,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 #endif /* __NetBSD__ */
diff -r 5d108a5ad3cb sys/netsmb/smb_dev.c
--- a/sys/netsmb/smb_dev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/netsmb/smb_dev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -95,6 +95,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };
 
diff -r 5d108a5ad3cb sys/opencrypto/cryptodev.c
--- a/sys/opencrypto/cryptodev.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/opencrypto/cryptodev.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1119,6 +1119,7 @@
 	.d_poll = cryptoselect /*nopoll*/,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER
 };
 
diff -r 5d108a5ad3cb sys/rump/librump/rumpvfs/devnull.c
--- a/sys/rump/librump/rumpvfs/devnull.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/rump/librump/rumpvfs/devnull.c	Sun Mar 23 02:30:23 2014 -0400
@@ -56,6 +56,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER | D_MPSAFE
 };
 
diff -r 5d108a5ad3cb sys/rump/librump/rumpvfs/rumpblk.c
--- a/sys/rump/librump/rumpvfs/rumpblk.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/rump/librump/rumpvfs/rumpblk.c	Sun Mar 23 02:30:23 2014 -0400
@@ -127,6 +127,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_DISK
 };
 
diff -r 5d108a5ad3cb sys/uvm/uvm_swap.c
--- a/sys/uvm/uvm_swap.c	Sun Mar 23 02:20:13 2014 -0400
+++ b/sys/uvm/uvm_swap.c	Sun Mar 23 02:30:23 2014 -0400
@@ -1298,6 +1298,7 @@
 	.d_poll = nopoll,
 	.d_mmap = nommap,
 	.d_kqfilter = nokqfilter,
+	.d_discard = nodiscard,
 	.d_flag = D_OTHER,
 };