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![Rob Norris](/assets/img/avatar_default.png)
6.7 changed the names of the time members in struct inode, so we can't assign back to it because we don't know its name. In practice this doesn't matter though - if we're missing current_time(), then we must be on <4.9, and we know our fallback will need to return timespec. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Sponsored-by: https://github.com/sponsors/robn Closes #15681
27 lines
742 B
Plaintext
27 lines
742 B
Plaintext
dnl #
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dnl # 4.9, current_time() added
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dnl # 4.18, return type changed from timespec to timespec64
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dnl #
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dnl # Note that we don't care about the return type in this check. If we have
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dnl # to implement a fallback, we'll know we're <4.9, which was timespec.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CURRENT_TIME], [
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ZFS_LINUX_TEST_SRC([current_time], [
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#include <linux/fs.h>
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], [
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struct inode ip __attribute__ ((unused));
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(void) current_time(&ip);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CURRENT_TIME], [
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AC_MSG_CHECKING([whether current_time() exists])
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ZFS_LINUX_TEST_RESULT_SYMBOL([current_time],
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[current_time], [fs/inode.c], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_CURRENT_TIME, 1, [current_time() exists])
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], [
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AC_MSG_RESULT(no)
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])
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])
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