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torvalds/linux@adc0e91ab1 introduced introduced d_make_root() as a replacement for d_alloc_root(). Further commits appear to have removed d_alloc_root() from the Linux source tree. This causes the following failure: error: implicit declaration of function 'd_alloc_root' [-Werror=implicit-function-declaration] To correct this we update the code to use the current d_make_root() interface for readability. Then we introduce an autotools check to determine if d_make_root() is available. If it isn't then we define some compatibility logic which used the older d_alloc_root() interface. Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #776
13 lines
283 B
Plaintext
13 lines
283 B
Plaintext
dnl #
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dnl # 3.4.0 API change
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dnl # Added d_make_root() to replace previous d_alloc_root() function.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_D_MAKE_ROOT], [
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ZFS_CHECK_SYMBOL_EXPORT(
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[d_make_root],
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[fs/dcache.c],
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[AC_DEFINE(HAVE_D_MAKE_ROOT, 1,
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[d_make_root() is available])],
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[])
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])
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