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Linux 6.7 compat: simplify current_time() check

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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
This commit is contained in:
Rob Norris 2023-12-16 18:01:45 +11:00 committed by Brian Behlendorf
parent dbda45160f
commit 00f40961e0
1 changed files with 4 additions and 1 deletions
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5
config/kernel-current-time.m4
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@ -2,12 +2,15 @@ dnl #
dnl # 4.9, current_time() added dnl # 4.9, current_time() added
dnl # 4.18, return type changed from timespec to timespec64 dnl # 4.18, return type changed from timespec to timespec64
dnl # dnl #
dnl # Note that we don't care about the return type in this check. If we have
dnl # to implement a fallback, we'll know we're <4.9, which was timespec.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CURRENT_TIME], [ AC_DEFUN([ZFS_AC_KERNEL_SRC_CURRENT_TIME], [
ZFS_LINUX_TEST_SRC([current_time], [ ZFS_LINUX_TEST_SRC([current_time], [
#include <linux/fs.h> #include <linux/fs.h>
], [ ], [
struct inode ip __attribute__ ((unused)); struct inode ip __attribute__ ((unused));
ip.i_atime = current_time(&ip); (void) current_time(&ip);
]) ])
]) ])