2 dnl # Linux 5.16 no longer allows directly calling wait_on_page_bit, and
3 dnl # instead requires you to call folio-specific functions. In this case,
4 dnl # wait_on_page_bit(pg, PG_writeback) becomes
5 dnl # folio_wait_bit(pg, PG_writeback)
7 AC_DEFUN([ZFS_AC_KERNEL_SRC_PAGEMAP_FOLIO_WAIT_BIT], [
8 ZFS_LINUX_TEST_SRC([pagemap_has_folio_wait_bit], [
9 #include <linux/pagemap.h>
11 static struct folio *f = NULL;
13 folio_wait_bit(f, PG_writeback);
17 AC_DEFUN([ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT], [
18 AC_MSG_CHECKING([whether folio_wait_bit() exists])
19 ZFS_LINUX_TEST_RESULT([pagemap_has_folio_wait_bit], [
21 AC_DEFINE(HAVE_PAGEMAP_FOLIO_WAIT_BIT, 1,
22 [folio_wait_bit() exists])