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Linux 6.3 compat: writepage_t first arg struct folio*

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The type def of writepage_t in kernel 6.3 is changed to take
struct folio* as the first argument. We need to detect this
change and pass correct function to write_cache_pages().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Youzhong Yang <yyang@mathworks.com>
Closes #14699
This commit is contained in:
youzhongyang
2023-04-05 13:01:38 -04:00
committed by Tony Hutter
parent 35d43ba8ea
commit 04305bbd18
3 changed files with 53 additions and 3 deletions
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config/kernel-writepage_t.m4
+26
View File
@@ -0,0 +1,26 @@
AC_DEFUN([ZFS_AC_KERNEL_SRC_WRITEPAGE_T], [
dnl #
dnl # 6.3 API change
dnl # The writepage_t function type now has its first argument as
dnl # struct folio* instead of struct page*
dnl #
ZFS_LINUX_TEST_SRC([writepage_t_folio], [
#include <linux/writeback.h>
int putpage(struct folio *folio,
struct writeback_control *wbc, void *data)
{ return 0; }
writepage_t func = putpage;
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_WRITEPAGE_T], [
AC_MSG_CHECKING([whether int (*writepage_t)() takes struct folio*])
ZFS_LINUX_TEST_RESULT([writepage_t_folio], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_WRITEPAGE_T_FOLIO, 1,
[int (*writepage_t)() takes struct folio*])
],[
AC_MSG_RESULT(no)
])
])
config/kernel.m4
+2
View File
@@ -145,6 +145,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_ZERO_PAGE
ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC
ZFS_AC_KERNEL_SRC_FILEMAP
ZFS_AC_KERNEL_SRC_WRITEPAGE_T
case "$host_cpu" in
powerpc*)
ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE
@@ -269,6 +270,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_ZERO_PAGE
ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC
ZFS_AC_KERNEL_FILEMAP
ZFS_AC_KERNEL_WRITEPAGE_T
case "$host_cpu" in
powerpc*)
ZFS_AC_KERNEL_CPU_HAS_FEATURE