[mirror_ubuntu-artful-kernel.git] / zfs / config / kernel-truncate-range.m4

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)
	])
])
Commit	Line	Data
87d546d8 TG	1	dnl #
	2	dnl # 3.5.0 API change
	3	dnl # torvalds/linux@17cf28afea2a1112f240a3a2da8af883be024811 removed
	4	dnl # truncate_range(). The file hole punching functionality is now
	5	dnl # provided by fallocate()
	6	dnl #
	7	AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_RANGE], [
	8	AC_MSG_CHECKING([whether iops->truncate_range() exists])
	9	ZFS_LINUX_TRY_COMPILE([
	10	#include <linux/fs.h>
	11	void truncate_range(struct inode *inode, loff_t start,
	12	loff_t end) { return; }
	13	static struct inode_operations iops __attribute__ ((unused)) = {
	14	.truncate_range = truncate_range,
	15	};
	16	],[
	17	],[
	18	AC_MSG_RESULT(yes)
	19	AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
	20	[iops->truncate_range() exists])
	21	],[
	22	AC_MSG_RESULT(no)
	23	])
	24	])