mirror_zfs/config/kernel-kmap-local-page.m4
Jason Lee 41902c8e6d
Use kmap_local_page instead of kmap_atomic (#16329)
Changed zfs_k(un)map_atomic to zfs_k(un)map_local

Signed-off-by: Jason Lee <jasonlee@lanl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
2024-07-16 17:27:29 -07:00

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dnl #
dnl # 5.11 API change
dnl # kmap_atomic() was deprecated in favor of kmap_local_page()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_KMAP_LOCAL_PAGE], [
ZFS_LINUX_TEST_SRC([kmap_local_page], [
#include <linux/highmem.h>
],[
struct page page;
kmap_local_page(&page);
])
])
AC_DEFUN([ZFS_AC_KERNEL_KMAP_LOCAL_PAGE], [
AC_MSG_CHECKING([whether kmap_local_page exists])
ZFS_LINUX_TEST_RESULT([kmap_local_page], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_KMAP_LOCAL_PAGE, 1,
[kernel has kmap_local_page])
],[
AC_MSG_RESULT(no)
])
])