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dnl #
dnl # 2.6.33 API change
dnl # Discard granularity and alignment restrictions may now be set.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_DISCARD_GRANULARITY], [
AC_MSG_CHECKING([whether ql->discard_granularity is available])
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
struct queue_limits ql __attribute__ ((unused));
ql.discard_granularity = 0;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DISCARD_GRANULARITY, 1,
[ql->discard_granularity is available])
],[
AC_MSG_RESULT(no)
])
])
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