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6.18 changes kmap_atomic() to take a const pointer. This is no problem for the places we use it, but Clang fails the test due to a warning about being unable to guarantee that uninitialised data will definitely not change. Easily solved by forcibly initialising it. Sponsored-by: https://despairlabs.com/sponsor/ Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #17954
23 lines
537 B
Plaintext
23 lines
537 B
Plaintext
dnl #
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dnl # 2.6.37 API change
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dnl # kmap_atomic changed from assigning hard-coded named slot to using
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dnl # push/pop based dynamical allocation.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_KMAP_ATOMIC_ARGS], [
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ZFS_LINUX_TEST_SRC([kmap_atomic], [
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#include <linux/pagemap.h>
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],[
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struct page page = {};
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kmap_atomic(&page);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS], [
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AC_MSG_CHECKING([whether kmap_atomic wants 1 args])
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ZFS_LINUX_TEST_RESULT([kmap_atomic], [
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AC_MSG_RESULT(yes)
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],[
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ZFS_LINUX_TEST_ERROR([kmap_atomic()])
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])
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])
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