Linux: bump minimum kernel version to 4.4

META

@@ -7,4 +7,4 @@ Release-Tags:  relext
 License:       CDDL
 Author:        OpenZFS
 Linux-Maximum: 6.9
-Linux-Minimum: 3.10
+Linux-Minimum: 4.4

config/kernel-acl.m4

@@ -1,135 +1,3 @@
-dnl #
-dnl # Check if posix_acl_release can be used from a ZFS_META_LICENSED
-dnl # module.  The is_owner_or_cap macro was replaced by
-dnl # inode_owner_or_capable
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE], [
-	ZFS_LINUX_TEST_SRC([posix_acl_release], [
-		#include <linux/cred.h>
-		#include <linux/fs.h>
-		#include <linux/posix_acl.h>
-	], [
-		struct posix_acl *tmp = posix_acl_alloc(1, 0);
-		posix_acl_release(tmp);
-	], [], [ZFS_META_LICENSE])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
-	AC_MSG_CHECKING([whether posix_acl_release() is available])
-	ZFS_LINUX_TEST_RESULT([posix_acl_release], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_POSIX_ACL_RELEASE, 1,
-		    [posix_acl_release() is available])
-
-		AC_MSG_CHECKING([whether posix_acl_release() is GPL-only])
-		ZFS_LINUX_TEST_RESULT([posix_acl_release_license], [
-			AC_MSG_RESULT(no)
-		],[
-			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_POSIX_ACL_RELEASE_GPL_ONLY, 1,
-			    [posix_acl_release() is GPL-only])
-		])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
-dnl #
-dnl # 3.14 API change,
-dnl # set_cached_acl() and forget_cached_acl() changed from inline to
-dnl # EXPORT_SYMBOL. In the former case, they may not be usable because of
-dnl # posix_acl_release. In the latter case, we can always use them.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE], [
-	ZFS_LINUX_TEST_SRC([set_cached_acl], [
-		#include <linux/cred.h>
-		#include <linux/fs.h>
-		#include <linux/posix_acl.h>
-	], [
-		struct inode *ip = NULL;
-		struct posix_acl *acl = posix_acl_alloc(1, 0);
-		set_cached_acl(ip, ACL_TYPE_ACCESS, acl);
-		forget_cached_acl(ip, ACL_TYPE_ACCESS);
-	], [], [ZFS_META_LICENSE])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE], [
-	AC_MSG_CHECKING([whether set_cached_acl() is usable])
-	ZFS_LINUX_TEST_RESULT([set_cached_acl_license], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SET_CACHED_ACL_USABLE, 1,
-		    [set_cached_acl() is usable])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
-dnl #
-dnl # 3.1 API change,
-dnl # posix_acl_chmod() was added as the preferred interface.
-dnl #
-dnl # 3.14 API change,
-dnl # posix_acl_chmod() was changed to __posix_acl_chmod()
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD], [
-	ZFS_LINUX_TEST_SRC([posix_acl_chmod], [
-		#include <linux/fs.h>
-		#include <linux/posix_acl.h>
-	],[
-		posix_acl_chmod(NULL, 0, 0)
-	])
-
-	ZFS_LINUX_TEST_SRC([__posix_acl_chmod], [
-		#include <linux/fs.h>
-		#include <linux/posix_acl.h>
-	],[
-		__posix_acl_chmod(NULL, 0, 0)
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_CHMOD], [
-	AC_MSG_CHECKING([whether __posix_acl_chmod exists])
-	ZFS_LINUX_TEST_RESULT([__posix_acl_chmod], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE___POSIX_ACL_CHMOD, 1,
-		    [__posix_acl_chmod() exists])
-	],[
-		AC_MSG_RESULT(no)
-
-		AC_MSG_CHECKING([whether posix_acl_chmod exists])
-		ZFS_LINUX_TEST_RESULT([posix_acl_chmod], [
-			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_POSIX_ACL_CHMOD, 1,
-			    [posix_acl_chmod() exists])
-		],[
-			ZFS_LINUX_TEST_ERROR([posix_acl_chmod()])
-		])
-	])
-])
-
-dnl #
-dnl # 3.1 API change,
-dnl # posix_acl_equiv_mode now wants an umode_t instead of a mode_t
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
-	ZFS_LINUX_TEST_SRC([posix_acl_equiv_mode], [
-		#include <linux/fs.h>
-		#include <linux/posix_acl.h>
-	],[
-		umode_t tmp;
-		posix_acl_equiv_mode(NULL, &tmp);
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
-	AC_MSG_CHECKING([whether posix_acl_equiv_mode() wants umode_t])
-	ZFS_LINUX_TEST_RESULT([posix_acl_equiv_mode], [
-		AC_MSG_RESULT(yes)
-	],[
-		ZFS_LINUX_TEST_ERROR([posix_acl_equiv_mode()])
-	])
-])
-
 dnl #
 dnl # 4.8 API change,
 dnl # The function posix_acl_valid now must be passed a namespace.
@@ -226,9 +94,6 @@ AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL], [
 	])
 ])
 
-dnl #
-dnl # 3.14 API change,
-dnl # Check if inode_operations contains the function set_acl
 dnl #
 dnl # 5.12 API change,
 dnl # set_acl() added a user_namespace* parameter first
@@ -290,30 +155,22 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
-	AC_MSG_CHECKING([whether iops->set_acl() exists])
+	AC_MSG_CHECKING([whether iops->set_acl() with 4 args exists])
 	ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_userns], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
 		AC_DEFINE(HAVE_SET_ACL_USERNS, 1, [iops->set_acl() takes 4 args])
 	],[
 		ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_mnt_idmap_dentry], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
 			AC_DEFINE(HAVE_SET_ACL_IDMAP_DENTRY, 1,
 			    [iops->set_acl() takes 4 args, arg1 is struct mnt_idmap *])
 		],[
 			ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_userns_dentry], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
 				AC_DEFINE(HAVE_SET_ACL_USERNS_DENTRY_ARG2, 1,
 				    [iops->set_acl() takes 4 args, arg2 is struct dentry *])
 			],[
-				ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
-					AC_MSG_RESULT(yes)
-					AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists, takes 3 args])
-				],[
-					ZFS_LINUX_REQUIRE_API([i_op->set_acl()], [3.14])
-				])
+				AC_MSG_RESULT(no)
 			])
 		])
 	])
@@ -371,10 +228,6 @@ AC_DEFUN([ZFS_AC_KERNEL_ACL_HAS_REFCOUNT], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL], [
-	ZFS_AC_KERNEL_SRC_POSIX_ACL_RELEASE
-	ZFS_AC_KERNEL_SRC_SET_CACHED_ACL_USABLE
-	ZFS_AC_KERNEL_SRC_POSIX_ACL_CHMOD
-	ZFS_AC_KERNEL_SRC_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
 	ZFS_AC_KERNEL_SRC_POSIX_ACL_VALID_WITH_NS
 	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL
 	ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL
@@ -383,10 +236,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_ACL], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_ACL], [
-	ZFS_AC_KERNEL_POSIX_ACL_RELEASE
-	ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE
-	ZFS_AC_KERNEL_POSIX_ACL_CHMOD
-	ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T
 	ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS
 	ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL
 	ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL

config/kernel-bdi.m4

@@ -23,16 +23,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BDI], [
 		int error __attribute__((unused)) =
 		    bdi_setup_and_register(&bdi, name);
 	])
-
-	ZFS_LINUX_TEST_SRC([bdi_setup_and_register_3args], [
-		#include <linux/backing-dev.h>
-		struct backing_dev_info bdi;
-	], [
-		char *name = "bdi";
-		unsigned int cap = BDI_CAP_MAP_COPY;
-		int error __attribute__((unused)) =
-		    bdi_setup_and_register(&bdi, name, cap);
-	])
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_BDI], [
@@ -60,22 +50,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BDI], [
 			    [bdi_setup_and_register() wants 2 args])
 		], [
 			AC_MSG_RESULT(no)
-
-			dnl #
-			dnl # 2.6.34 - 3.19, bdi_setup_and_register()
-			dnl # takes 3 arguments.
-			dnl #
-			AC_MSG_CHECKING(
-			    [whether bdi_setup_and_register() wants 3 args])
-			ZFS_LINUX_TEST_RESULT_SYMBOL(
-			    [bdi_setup_and_register_3args],
-			    [bdi_setup_and_register], [mm/backing-dev.c], [
-				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_3ARGS_BDI_SETUP_AND_REGISTER, 1,
-				    [bdi_setup_and_register() wants 3 args])
-			], [
-				ZFS_LINUX_TEST_ERROR([bdi_setup])
-			])
+			ZFS_LINUX_TEST_ERROR([bdi_setup])
 		])
 	])
 ])