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Remove blk_queue_discard() autotools check 

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

Signed-off-by: Richard Yao <ryao@gentoo.org>
This commit is contained in:
Richard Yao 2014-09-14 23:39:03 -04:00
parent 7d6e2adb4e
commit d677203a9b
2 changed files with 0 additions and 23 deletions
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22
config/kernel-blk-queue-discard.m4
View File

@ -1,22 +0,0 @@
dnl #
dnl # 2.6.32 API change
dnl # Discard requests were moved to the normal I/O path.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_DISCARD], [
AC_MSG_CHECKING([whether blk_queue_discard() 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_discard(q);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_QUEUE_DISCARD, 1,
[blk_queue_discard() is available])
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])

1
config/kernel.m4
View File

@ -32,7 +32,6 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
ZFS_AC_KERNEL_BLK_QUEUE_NONROT
ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
ZFS_AC_KERNEL_GET_DISK_RO
ZFS_AC_KERNEL_GET_GENDISK
ZFS_AC_KERNEL_DISCARD_GRANULARITY