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00f40961e0
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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