dnl # dnl # 2.6.31 API change dnl # AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_POS], [ AC_MSG_CHECKING([whether blk_rq_pos() is available]) tmp_flags="$EXTRA_KCFLAGS" EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" ZFS_LINUX_TRY_COMPILE([ #include ],[ struct request *req = NULL; (void) blk_rq_pos(req); ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_BLK_RQ_POS, 1, [blk_rq_pos() is available]) ],[ AC_MSG_RESULT(no) ]) EXTRA_KCFLAGS="$tmp_flags" ])