[mirror_zfs.git] / config / kernel-vfs-set_page_dirty.m4

dnl #
dnl # Linux 5.14 adds a change to require set_page_dirty to be manually
dnl # wired up in struct address_space_operations. Determine if this needs
dnl # to be done. This patch set also introduced __set_page_dirty_nobuffers
dnl # declaration in linux/pagemap.h, so these tests look for the presence
dnl # of that function to tell the compiler to assign set_page_dirty in
dnl # module/os/linux/zfs/zpl_file.c
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS], [
	ZFS_LINUX_TEST_SRC([vfs_has_set_page_dirty_nobuffers], [
		#include <linux/pagemap.h>
		#include <linux/fs.h>

		static const struct address_space_operations
		    aops __attribute__ ((unused)) = {
			.set_page_dirty = __set_page_dirty_nobuffers,
		};
	],[])
])

AC_DEFUN([ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS], [
	dnl #
	dnl # Linux 5.14 change requires set_page_dirty() to be assigned
	dnl # in address_space_operations()
	dnl #
	AC_MSG_CHECKING([whether __set_page_dirty_nobuffers exists])
	ZFS_LINUX_TEST_RESULT([vfs_has_set_page_dirty_nobuffers], [
		AC_MSG_RESULT([yes])
		AC_DEFINE(HAVE_VFS_SET_PAGE_DIRTY_NOBUFFERS, 1,
			[__set_page_dirty_nobuffers exists])
	],[
		AC_MSG_RESULT([no])
	])
])
Commit	Line	Data
1c24bf96 CK	1	dnl #
	2	dnl # Linux 5.14 adds a change to require set_page_dirty to be manually
	3	dnl # wired up in struct address_space_operations. Determine if this needs
	4	dnl # to be done. This patch set also introduced __set_page_dirty_nobuffers
	5	dnl # declaration in linux/pagemap.h, so these tests look for the presence
	6	dnl # of that function to tell the compiler to assign set_page_dirty in
	7	dnl # module/os/linux/zfs/zpl_file.c
	8	dnl #
	9	AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS], [
	10	ZFS_LINUX_TEST_SRC([vfs_has_set_page_dirty_nobuffers], [
	11	#include <linux/pagemap.h>
	12	#include <linux/fs.h>
	13
	14	static const struct address_space_operations
	15	aops __attribute__ ((unused)) = {
	16	.set_page_dirty = __set_page_dirty_nobuffers,
	17	};
	18	],[])
	19	])
	20
	21	AC_DEFUN([ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS], [
	22	dnl #
	23	dnl # Linux 5.14 change requires set_page_dirty() to be assigned
	24	dnl # in address_space_operations()
	25	dnl #
b9d98453	26	AC_MSG_CHECKING([whether __set_page_dirty_nobuffers exists])
1c24bf96 CK	27	ZFS_LINUX_TEST_RESULT([vfs_has_set_page_dirty_nobuffers], [
	28	AC_MSG_RESULT([yes])
	29	AC_DEFINE(HAVE_VFS_SET_PAGE_DIRTY_NOBUFFERS, 1,
	30	[__set_page_dirty_nobuffers exists])
	31	],[
	32	AC_MSG_RESULT([no])
	33	])
	34	])