kernel-pagemap-folio_wait_bit.m4

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    1 dnl #
    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)
    6 dnl #
    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>
   10         ],[
   11                 static struct folio *f = NULL;
   12 
   13                 folio_wait_bit(f, PG_writeback);
   14         ])
   15 ])
   16 
   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], [
   20                 AC_MSG_RESULT([yes])
   21                 AC_DEFINE(HAVE_PAGEMAP_FOLIO_WAIT_BIT, 1,
   22                         [folio_wait_bit() exists])
   23         ],[
   24                 AC_MSG_RESULT([no])
   25         ])
   26 ])

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/config/kernel-pagemap-folio_wait_bit.m4

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-pagemap-folio_wait_bit.m4