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dnl #
dnl # 3.5.0 API change
dnl # torvalds/linux@17cf28afea2a1112f240a3a2da8af883be024811 removed
dnl # truncate_range(). The file hole punching functionality is now
dnl # provided by fallocate()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_RANGE], [
AC_MSG_CHECKING([whether iops->truncate_range() exists])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
void truncate_range(struct inode *inode, loff_t start,
loff_t end) { return; }
static struct inode_operations iops __attribute__ ((unused)) = {
.truncate_range = truncate_range,
};
],[
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
[iops->truncate_range() exists])
],[
AC_MSG_RESULT(no)
])
])
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