b761912b34
rq_for_each_segment changed from taking bio_vec * to taking bio_vec. We provide rq_for_each_segment4 which takes both. Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #2124
48 lines
1.2 KiB
Plaintext
48 lines
1.2 KiB
Plaintext
dnl #
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dnl # 2.6.x API change
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dnl #
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dnl # 3.14 API change
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
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AC_MSG_CHECKING([whether rq_for_each_segment() wants bio_vec *])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/blkdev.h>
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],[
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struct bio_vec *bv;
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struct req_iterator iter;
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struct request *req = NULL;
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rq_for_each_segment(bv, req, iter) { }
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT, 1,
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[rq_for_each_segment() is available])
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AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT_BVP, 1,
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[rq_for_each_segment() wants bio_vec *])
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],[
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AC_MSG_RESULT(no)
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])
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AC_MSG_CHECKING([whether rq_for_each_segment() wants bio_vec])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/blkdev.h>
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],[
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struct bio_vec bv;
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struct req_iterator iter;
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struct request *req = NULL;
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rq_for_each_segment(bv, req, iter) { }
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT, 1,
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[rq_for_each_segment() is available])
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AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT_BV, 1,
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[rq_for_each_segment() wants bio_vec])
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],[
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AC_MSG_RESULT(no)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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