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) ]) ])