zvol_os: fix build on Linux <3.13
[zfs.git] / config / kernel-lseek-execute.m4
blob652f611f8da4d661d969fbd582ac23b3e959fef8
1 dnl #
2 dnl # 3.11 API change
3 dnl # lseek_execute helper exported
4 dnl #
5 AC_DEFUN([ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE], [
6         ZFS_LINUX_TEST_SRC([lseek_execute], [
7                 #include <linux/fs.h>
8         ], [
9                 struct file *fp __attribute__ ((unused)) = NULL;
10                 struct inode *ip __attribute__ ((unused)) = NULL;
11                 loff_t offset __attribute__ ((unused)) = 0;
12                 loff_t maxsize __attribute__ ((unused)) = 0;
14                 lseek_execute(fp, ip, offset, maxsize);
15         ])
18 AC_DEFUN([ZFS_AC_KERNEL_LSEEK_EXECUTE], [
19         AC_MSG_CHECKING([whether lseek_execute() is available])
20         ZFS_LINUX_TEST_RESULT_SYMBOL([lseek_execute],
21             [lseek_exclusive], [fs/read_write.c], [
22                 AC_MSG_RESULT(yes)
23                 AC_DEFINE(HAVE_LSEEK_EXECUTE, 1, [lseek_execute() is available])
24         ], [
25                 AC_MSG_RESULT(no)
26         ])