+++ /dev/null
-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="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="${NO_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"
-])
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_NONROT
ZFS_AC_KERNEL_GET_DISK_RO
ZFS_AC_KERNEL_GET_GENDISK
ZFS_AC_KERNEL_DISCARD_GRANULARITY