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Linux 6.3 compat: idmapped mount API changes

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Linux kernel 6.3 changed a bunch of APIs to use the dedicated idmap 
type for mounts (struct mnt_idmap), we need to detect these changes 
and make zfs work with the new APIs.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Youzhong Yang <yyang@mathworks.com>
Closes #14682
This commit is contained in:
youzhongyang
2023-04-10 17:15:36 -04:00
committed by GitHub
parent d0cbd9feaf
commit d4dc53dad2
40 changed files with 823 additions and 296 deletions
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config/kernel-generic_fillattr.m4
+28 -9
View File
@@ -4,7 +4,10 @@ dnl #
dnl # generic_fillattr in linux/fs.h now requires a struct user_namespace*
dnl # as the first arg, to support idmapped mounts.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS], [
dnl # 6.3 API
dnl # generic_fillattr() now takes struct mnt_idmap* as the first argument
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR], [
ZFS_LINUX_TEST_SRC([generic_fillattr_userns], [
#include <linux/fs.h>
],[
@@ -13,16 +16,32 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS], [
struct kstat *k = NULL;
generic_fillattr(userns, in, k);
])
])
AC_DEFUN([ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS], [
AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*])
ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1,
[generic_fillattr requires struct user_namespace*])
ZFS_LINUX_TEST_SRC([generic_fillattr_mnt_idmap], [
#include <linux/fs.h>
],[
AC_MSG_RESULT([no])
struct mnt_idmap *idmap = NULL;
struct inode *in = NULL;
struct kstat *k = NULL;
generic_fillattr(idmap, in, k);
])
])
AC_DEFUN([ZFS_AC_KERNEL_GENERIC_FILLATTR], [
AC_MSG_CHECKING([whether generic_fillattr requires struct mnt_idmap*])
ZFS_LINUX_TEST_RESULT([generic_fillattr_mnt_idmap], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_GENERIC_FILLATTR_IDMAP, 1,
[generic_fillattr requires struct mnt_idmap*])
],[
AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*])
ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1,
[generic_fillattr requires struct user_namespace*])
],[
AC_MSG_RESULT([no])
])
])
])