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Linux 6.0 compat: Check for migratepage VFS (#17217)

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The 6.0 kernel removes the 'migratepage' VFS op. Check for
migratepage.

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org
This commit is contained in:
Tony Hutter 2025-04-10 17:36:31 -07:00 committed by GitHub
parent a497c5fc8b
commit ab9bb193f9
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GPG Key ID: B5690EEEBB952194
3 changed files with 30 additions and 1 deletions
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27
config/kernel-vfs-migratepage.m4 Normal file
View File

@ -0,0 +1,27 @@
dnl #
dnl # Linux 6.0 gets rid of address_space_operations.migratepage
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_MIGRATEPAGE], [
ZFS_LINUX_TEST_SRC([vfs_has_migratepage], [
#include <linux/fs.h>
#include <linux/migrate.h>
static const struct address_space_operations
aops __attribute__ ((unused)) = {
.migratepage = migrate_page,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_MIGRATEPAGE], [
dnl #
dnl # Linux 6.0 gets rid of address_space_operations.migratepage
dnl #
AC_MSG_CHECKING([whether migratepage exists])
ZFS_LINUX_TEST_RESULT([vfs_has_migratepage], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_VFS_MIGRATEPAGE, 1, [migratepage exists])
],[
AC_MSG_RESULT([no])
])
])

2
config/kernel.m4
View File

@ -79,6 +79,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_VFS_FILEMAP_DIRTY_FOLIO
ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO
ZFS_AC_KERNEL_SRC_VFS_MIGRATE_FOLIO
ZFS_AC_KERNEL_SRC_VFS_MIGRATEPAGE
ZFS_AC_KERNEL_SRC_VFS_FSYNC_2ARGS
ZFS_AC_KERNEL_SRC_VFS_READPAGES
ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS
@ -191,6 +192,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO
ZFS_AC_KERNEL_VFS_READ_FOLIO
ZFS_AC_KERNEL_VFS_MIGRATE_FOLIO
ZFS_AC_KERNEL_VFS_MIGRATEPAGE
ZFS_AC_KERNEL_VFS_FSYNC_2ARGS
ZFS_AC_KERNEL_VFS_READPAGES
ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS

2
module/os/linux/zfs/zpl_file.c
View File

@ -1058,7 +1058,7 @@ const struct address_space_operations zpl_address_space_operations = {
#endif
#ifdef HAVE_VFS_MIGRATE_FOLIO
.migrate_folio = migrate_folio,
#else
#elif defined(HAVE_VFS_MIGRATEPAGE)
.migratepage = migrate_page,
#endif
};