dnl # dnl # 2.6.x API change dnl # AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [ AC_MSG_CHECKING([whether rq_is_sync() is available]) tmp_flags="$EXTRA_KCFLAGS" EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" ZFS_LINUX_TRY_COMPILE([ #include ],[ struct request *req = NULL; (void) rq_is_sync(req); ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_RQ_IS_SYNC, 1, [rq_is_sync() is available]) ],[ AC_MSG_RESULT(no) ]) EXTRA_KCFLAGS="$tmp_flags" ])