Improve ZVOL queue behavior.

The Linux block device queue subsystem exposes a number of configurable settings described in Linux block/blk-settings.c. The defaults for these settings are tuned for hard drives, and are not optimized for ZVOLs. Proper configuration of these options would allow upper layers (I/O scheduler) to take better decisions about write merging and ordering. Detailed rationale: - max_hw_sectors is set to unlimited (UINT_MAX). zvol_write() is able to handle writes of any size, so there's no reason to impose a limit. Let the upper layer decide. - max_segments and max_segment_size are set to unlimited. zvol_write() will copy the requests' contents into a dbuf anyway, so the number and size of the segments are irrelevant. Let the upper layer decide. - physical_block_size and io_opt are set to the ZVOL's block size. This has the potential to somewhat alleviate issue #361 for ZVOLs, by warning the upper layers that writes smaller than the volume's block size will be slow. - The NONROT flag is set to indicate this isn't a rotational device. Although the backing zpool might be composed of rotational devices, the resulting ZVOL often doesn't exhibit the same behavior due to the COW mechanisms used by ZFS. Setting this flag will prevent upper layers from making useless decisions (such as reordering writes) based on incorrect assumptions about the behavior of the ZVOL. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-12-25 18:59:33 +03:00 · 2011-09-05 15:15:45 +02:00 · 2011-09-05 15:15:45 +02:00 · 34037afe24
commit 34037afe24
parent b18019d2d8
64 changed files with 1159 additions and 0 deletions
--- a/Makefile.in
+++ b/Makefile.in
@ -73,6 +73,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/Makefile.in
+++ b/cmd/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/mount_zfs/Makefile.in
+++ b/cmd/mount_zfs/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/sas_switch_id/Makefile.in
+++ b/cmd/sas_switch_id/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zdb/Makefile.in
+++ b/cmd/zdb/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zfs/Makefile.in
+++ b/cmd/zfs/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zinject/Makefile.in
+++ b/cmd/zinject/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zpios/Makefile.in
+++ b/cmd/zpios/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zpool/Makefile.in
+++ b/cmd/zpool/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zpool_id/Makefile.in
+++ b/cmd/zpool_id/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zpool_layout/Makefile.in
+++ b/cmd/zpool_layout/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/ztest/Makefile.in
+++ b/cmd/ztest/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/cmd/zvol_id/Makefile.in
+++ b/cmd/zvol_id/Makefile.in
@ -53,6 +53,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/config/kernel-blk-queue-io-opt.m4
+++ b/config/kernel-blk-queue-io-opt.m4
@ -0,0 +1,24 @@
+dnl #
+dnl # 2.6.30 API change
+dnl # The blk_queue_io_opt() function was added to indicate the optimal
+dnl # I/O size for the device.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT], [
+	AC_MSG_CHECKING([whether blk_queue_io_opt() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		unsigned int opt = 1;
+		(void) blk_queue_io_opt(q, opt);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_IO_OPT, 1,
+		          [blk_queue_io_opt() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+	EXTRA_KCFLAGS="$tmp_flags"
+])
--- a/config/kernel-blk-queue-max-hw-sectors.m4
+++ b/config/kernel-blk-queue-max-hw-sectors.m4
@ -0,0 +1,22 @@
+dnl #
+dnl # 2.6.34 API change
+dnl # blk_queue_max_hw_sectors() replaces blk_queue_max_sectors().
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS], [
+	AC_MSG_CHECKING([whether blk_queue_max_hw_sectors() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_hw_sectors(q, BLK_SAFE_MAX_SECTORS);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_MAX_HW_SECTORS, 1,
+		          [blk_queue_max_hw_sectors() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+	EXTRA_KCFLAGS="$tmp_flags"
+])
--- a/config/kernel-blk-queue-max-segments.m4
+++ b/config/kernel-blk-queue-max-segments.m4
@ -0,0 +1,23 @@
+dnl #
+dnl # 2.6.34 API change
+dnl # blk_queue_max_segments() consolidates blk_queue_max_hw_segments()
+dnl # and blk_queue_max_phys_segments().
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS], [
+	AC_MSG_CHECKING([whether blk_queue_max_segments() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_segments(q, BLK_MAX_SEGMENTS);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
+		          [blk_queue_max_segments() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+	EXTRA_KCFLAGS="$tmp_flags"
+])
--- a/config/kernel-blk-queue-nonrot.m4
+++ b/config/kernel-blk-queue-nonrot.m4
@ -0,0 +1,25 @@
+dnl #
+dnl # 2.6.27 API change
+dnl # The blk_queue_nonrot() function and QUEUE_FLAG_NONROT flag were
+dnl # added so non-rotational devices could be identified.  These devices
+dnl # have no seek time which the higher level elevator uses to optimize
+dnl # how the I/O issued to the device.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_NONROT], [
+	AC_MSG_CHECKING([whether blk_queue_nonrot() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		(void) blk_queue_nonrot(q);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_NONROT, 1,
+		          [blk_queue_nonrot() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+	EXTRA_KCFLAGS="$tmp_flags"
+])
--- a/config/kernel-blk-queue-physical-block-size.m4
+++ b/config/kernel-blk-queue-physical-block-size.m4
@ -0,0 +1,25 @@
+dnl #
+dnl # 2.6.30 API change
+dnl # The blk_queue_physical_block_size() function was introduced to
+dnl # indicate the smallest I/O the device can write without incurring
+dnl # a read-modify-write penalty.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE], [
+	AC_MSG_CHECKING([whether blk_queue_physical_block_size() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		unsigned short block_size = 1;
+		(void) blk_queue_physical_block_size(q, block_size);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE, 1,
+		          [blk_queue_physical_block_size() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+	EXTRA_KCFLAGS="$tmp_flags"
+])
--- a/config/kernel.m4
+++ b/config/kernel.m4
@ -22,6 +22,11 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
 	ZFS_AC_KERNEL_REQ_SYNC
 	ZFS_AC_KERNEL_BLK_END_REQUEST
 	ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
+	ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
+	ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
+	ZFS_AC_KERNEL_BLK_QUEUE_PHYSICAL_BLOCK_SIZE
+	ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT
+	ZFS_AC_KERNEL_BLK_QUEUE_NONROT
 	ZFS_AC_KERNEL_BLK_FETCH_REQUEST
 	ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST
 	ZFS_AC_KERNEL_BLK_RQ_BYTES
--- a/694
+++ b/694
@ -13804,6 +13804,353 @@ _ACEOF



+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_max_hw_sectors() is available" >&5
+$as_echo_n "checking whether blk_queue_max_hw_sectors() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_hw_sectors(q, BLK_SAFE_MAX_SECTORS);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_MAX_HW_SECTORS 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_max_segments() is available" >&5
+$as_echo_n "checking whether blk_queue_max_segments() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_segments(q, BLK_MAX_SEGMENTS);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_MAX_SEGMENTS 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_physical_block_size() is available" >&5
+$as_echo_n "checking whether blk_queue_physical_block_size() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		unsigned short block_size = 1;
+		(void) blk_queue_physical_block_size(q, block_size);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_io_opt() is available" >&5
+$as_echo_n "checking whether blk_queue_io_opt() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		unsigned int opt = 1;
+		(void) blk_queue_io_opt(q, opt);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_IO_OPT 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_nonrot() is available" >&5
+$as_echo_n "checking whether blk_queue_nonrot() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_nonrot(q);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_NONROT 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
 fi

 	rm -Rf build
@ -19137,6 +19484,353 @@ _ACEOF



+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_max_hw_sectors() is available" >&5
+$as_echo_n "checking whether blk_queue_max_hw_sectors() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_hw_sectors(q, BLK_SAFE_MAX_SECTORS);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_MAX_HW_SECTORS 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_max_segments() is available" >&5
+$as_echo_n "checking whether blk_queue_max_segments() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_max_segments(q, BLK_MAX_SEGMENTS);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_MAX_SEGMENTS 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_physical_block_size() is available" >&5
+$as_echo_n "checking whether blk_queue_physical_block_size() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		unsigned short block_size = 1;
+		(void) blk_queue_physical_block_size(q, block_size);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_io_opt() is available" >&5
+$as_echo_n "checking whether blk_queue_io_opt() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		unsigned int opt = 1;
+		(void) blk_queue_io_opt(q, opt);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_IO_OPT 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
+fi
+
+	rm -Rf build
+
+
+	EXTRA_KCFLAGS="$tmp_flags"
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether blk_queue_nonrot() is available" >&5
+$as_echo_n "checking whether blk_queue_nonrot() is available... " >&6; }
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/blkdev.h>
+
+int
+main (void)
+{
+
+		struct request_queue *q = NULL;
+		(void) blk_queue_nonrot(q);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build
+	echo "obj-m := conftest.o" >build/Makefile
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BLK_QUEUE_NONROT 1
+_ACEOF
+
+
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+
+
 fi

 	rm -Rf build
--- a/dracut/90zfs/Makefile.in
+++ b/dracut/90zfs/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/dracut/Makefile.in
+++ b/dracut/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/etc/Makefile.in
+++ b/etc/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/etc/init.d/Makefile.in
+++ b/etc/init.d/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/etc/zfs/Makefile.in
+++ b/etc/zfs/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/Makefile.in
+++ b/include/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/linux/Makefile.in
+++ b/include/linux/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/linux/blkdev_compat.h
+++ b/include/linux/blkdev_compat.h
@ -200,6 +200,53 @@ __blk_rq_bytes(struct request *req)
 #define blk_queue_stackable(q)	((q)->request_fn == NULL)
 #endif

+/*
+ * 2.6.34 API change,
+ * The blk_queue_max_hw_sectors() function replaces blk_queue_max_sectors().
+ */
+#ifndef HAVE_BLK_QUEUE_MAX_HW_SECTORS
+#define blk_queue_max_hw_sectors __blk_queue_max_hw_sectors
+static inline void
+__blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors)
+{
+	blk_queue_max_sectors(q, max_hw_sectors);
+}
+#endif
+
+/*
+ * 2.6.34 API change,
+ * The blk_queue_max_segments() function consolidates
+ * blk_queue_max_hw_segments() and blk_queue_max_phys_segments().
+ */
+#ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
+#define blk_queue_max_segments __blk_queue_max_segments
+static inline void
+__blk_queue_max_segments(struct request_queue *q, unsigned short max_segments)
+{
+	blk_queue_max_phys_segments(q, max_segments);
+	blk_queue_max_hw_segments(q, max_segments);
+}
+#endif
+
+/*
+ * 2.6.30 API change,
+ * The blk_queue_physical_block_size() function was introduced to
+ * indicate the smallest I/O the device can write without incurring
+ * a read-modify-write penalty.  For older kernels this is a no-op.
+ */
+#ifndef HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE
+#define blk_queue_physical_block_size(q, x)	((void)(0))
+#endif
+
+/*
+ * 2.6.30 API change,
+ * The blk_queue_io_opt() function was added to indicate the optimal
+ * I/O size for the device.  For older kernels this is a no-op.
+ */
+#ifndef HAVE_BLK_QUEUE_IO_OPT
+#define blk_queue_io_opt(q, x)			((void)(0))
+#endif
+
 #ifndef HAVE_GET_DISK_RO
 static inline int
 get_disk_ro(struct gendisk *disk)
--- a/include/sys/Makefile.in
+++ b/include/sys/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/sys/fm/Makefile.in
+++ b/include/sys/fm/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/sys/fm/fs/Makefile.in
+++ b/include/sys/fm/fs/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/include/sys/fs/Makefile.in
+++ b/include/sys/fs/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libavl/Makefile.in
+++ b/lib/libavl/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libefi/Makefile.in
+++ b/lib/libefi/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libnvpair/Makefile.in
+++ b/lib/libnvpair/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libshare/Makefile.in
+++ b/lib/libshare/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/Makefile.in
+++ b/lib/libspl/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/asm-generic/Makefile.in
+++ b/lib/libspl/asm-generic/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/asm-i386/Makefile.in
+++ b/lib/libspl/asm-i386/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/asm-x86_64/Makefile.in
+++ b/lib/libspl/asm-x86_64/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/Makefile.in
+++ b/lib/libspl/include/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/ia32/Makefile.in
+++ b/lib/libspl/include/ia32/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/ia32/sys/Makefile.in
+++ b/lib/libspl/include/ia32/sys/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/rpc/Makefile.in
+++ b/lib/libspl/include/rpc/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/sys/Makefile.in
+++ b/lib/libspl/include/sys/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/sys/dktp/Makefile.in
+++ b/lib/libspl/include/sys/dktp/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/sys/sysevent/Makefile.in
+++ b/lib/libspl/include/sys/sysevent/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libspl/include/util/Makefile.in
+++ b/lib/libspl/include/util/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libunicode/Makefile.in
+++ b/lib/libunicode/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libuutil/Makefile.in
+++ b/lib/libuutil/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libzfs/Makefile.in
+++ b/lib/libzfs/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/lib/libzpool/Makefile.in
+++ b/lib/libzpool/Makefile.in
@ -52,6 +52,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/man/Makefile.in
+++ b/man/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/man/man8/Makefile.in
+++ b/man/man8/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@ -1188,6 +1188,15 @@ __zvol_create_minor(const char *name)

 	set_capacity(zv->zv_disk, zv->zv_volsize >> 9);

+	blk_queue_max_hw_sectors(zv->zv_queue, UINT_MAX);
+	blk_queue_max_segments(zv->zv_queue, UINT16_MAX);
+	blk_queue_max_segment_size(zv->zv_queue, UINT_MAX);
+	blk_queue_physical_block_size(zv->zv_queue, zv->zv_volblocksize);
+	blk_queue_io_opt(zv->zv_queue, zv->zv_volblocksize);
+#ifdef HAVE_BLK_QUEUE_NONROT
+	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, zv->zv_queue);
+#endif
+
 	if (zil_replay_disable)
 		zil_destroy(dmu_objset_zil(os), B_FALSE);
 	else
--- a/scripts/Makefile.in
+++ b/scripts/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/scripts/zpios-profile/Makefile.in
+++ b/scripts/zpios-profile/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/scripts/zpios-test/Makefile.in
+++ b/scripts/zpios-test/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/scripts/zpool-config/Makefile.in
+++ b/scripts/zpool-config/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/scripts/zpool-layout/Makefile.in
+++ b/scripts/zpool-layout/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/udev/Makefile.in
+++ b/udev/Makefile.in
@ -50,6 +50,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/udev/rules.d/Makefile.in
+++ b/udev/rules.d/Makefile.in
@ -51,6 +51,11 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-end-request.m4 \
 	$(top_srcdir)/config/kernel-blk-fetch-request.m4 \
 	$(top_srcdir)/config/kernel-blk-queue-flush.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-io-opt.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-hw-sectors.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-max-segments.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-nonrot.m4 \
+	$(top_srcdir)/config/kernel-blk-queue-physical-block-size.m4 \
 	$(top_srcdir)/config/kernel-blk-requeue-request.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-bytes.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
--- a/zfs_config.h.in
+++ b/zfs_config.h.in
@ -57,6 +57,21 @@
 /* blk_queue_flush() is GPL-only */
 #undef HAVE_BLK_QUEUE_FLUSH_GPL_ONLY

+/* blk_queue_io_opt() is available */
+#undef HAVE_BLK_QUEUE_IO_OPT
+
+/* blk_queue_max_hw_sectors() is available */
+#undef HAVE_BLK_QUEUE_MAX_HW_SECTORS
+
+/* blk_queue_max_segments() is available */
+#undef HAVE_BLK_QUEUE_MAX_SEGMENTS
+
+/* blk_queue_nonrot() is available */
+#undef HAVE_BLK_QUEUE_NONROT
+
+/* blk_queue_physical_block_size() is available */
+#undef HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE
+
 /* blk_requeue_request() is available */
 #undef HAVE_BLK_REQUEUE_REQUEST