24 lines
670 B
Text
24 lines
670 B
Text
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dnl #
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dnl # 2.6.34 API change
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dnl # blk_queue_max_segments() consolidates blk_queue_max_hw_segments()
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dnl # and blk_queue_max_phys_segments().
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS], [
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AC_MSG_CHECKING([whether blk_queue_max_segments() is available])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
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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 request_queue *q = NULL;
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(void) blk_queue_max_segments(q, BLK_MAX_SEGMENTS);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BLK_QUEUE_MAX_SEGMENTS, 1,
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[blk_queue_max_segments() is available])
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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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