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zvol_os: fix compile with blk-mq on Linux 4.x
[mirror_zfs.git] / config / kernel-mm-page-size.m4
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1AC_DEFUN([ZFS_AC_KERNEL_SRC_MM_PAGE_SIZE], [
2 ZFS_LINUX_TEST_SRC([page_size], [
3 #include <linux/mm.h>
4 ],[
5 unsigned long s;
6 s = page_size(NULL);
7 ])
8])
9AC_DEFUN([ZFS_AC_KERNEL_MM_PAGE_SIZE], [
10 AC_MSG_CHECKING([whether page_size() is available])
11 ZFS_LINUX_TEST_RESULT([page_size], [
12 AC_MSG_RESULT(yes)
13 AC_DEFINE(HAVE_MM_PAGE_SIZE, 1, [page_size() is available])
14 ],[
15 AC_MSG_RESULT(no)
16 ])
17])