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Remove blk_queue_nonrot() autotools check 

This autotools check was never needed because we can check for the
existence of QUEUE_FLAG_NONROT in the kernel headers.

Also, the comment in config/kernel-blk-queue-nonrot.m4 is incorrect.
This was a Linux 2.6.28 API change, not a Linux 2.6.27 API change.

Signed-off-by: Richard Yao <ryao@gentoo.org>
This commit is contained in:
Richard Yao 2014-09-14 23:41:15 -04:00
parent d677203a9b
commit d60328645d
2 changed files with 0 additions and 26 deletions
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25
config/kernel-blk-queue-nonrot.m4
View File

@ -1,25 +0,0 @@
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"
])

1
config/kernel.m4
View File

@ -31,7 +31,6 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
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