From 85cddec25f60fc694d07242f63945cb2afe7d91e Mon Sep 17 00:00:00 2001
From: Thomas Schoebel-Theuer <tst@1und1.de>
Date: Mon, 22 Aug 2016 12:54:44 +0200
Subject: [PATCH] mars: minimum pre-patch for mars

Mostly introduces some EXPORT_SYMBOL().
Should have almost no impact onto the kernel.
---
 fs/aio.c                   | 5 +++++
 fs/namei.c                 | 5 +++++
 fs/open.c                  | 2 ++
 fs/utimes.c                | 2 ++
 include/uapi/linux/major.h | 1 +
 mm/page_alloc.c            | 2 ++
 6 files changed, 17 insertions(+)

diff --git a/fs/aio.c b/fs/aio.c
index b37e86c..f88cf7b 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1309,6 +1309,7 @@ SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
 out:
 	return ret;
 }
+EXPORT_SYMBOL(sys_io_setup);
 
 /* sys_io_destroy:
  *	Destroy the aio_context specified.  May cancel any outstanding 
@@ -1343,6 +1344,7 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
 	pr_debug("EINVAL: io_destroy: invalid context id\n");
 	return -EINVAL;
 }
+EXPORT_SYMBOL(sys_io_destroy);
 
 typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *,
 			    unsigned long, loff_t);
@@ -1624,6 +1626,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 	percpu_ref_put(&ctx->users);
 	return i ? i : ret;
 }
+EXPORT_SYMBOL(sys_io_submit);
 
 /* sys_io_submit:
  *	Queue the nr iocbs pointed to by iocbpp for processing.  Returns
@@ -1714,6 +1717,7 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb,
 
 	return ret;
 }
+EXPORT_SYMBOL(sys_io_cancel);
 
 /* io_getevents:
  *	Attempts to read at least min_nr events and up to nr events from
@@ -1743,3 +1747,4 @@ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id,
 	}
 	return ret;
 }
+EXPORT_SYMBOL(sys_io_getevents);
diff --git a/fs/namei.c b/fs/namei.c
index b1b1781..aa3ef2d 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4391,12 +4391,17 @@ EXPORT_SYMBOL(unlock_rename);
 EXPORT_SYMBOL(vfs_create);
 EXPORT_SYMBOL(vfs_link);
 EXPORT_SYMBOL(vfs_mkdir);
+EXPORT_SYMBOL(sys_mkdir);
 EXPORT_SYMBOL(vfs_mknod);
 EXPORT_SYMBOL(generic_permission);
 EXPORT_SYMBOL(vfs_readlink);
 EXPORT_SYMBOL(vfs_rename);
+EXPORT_SYMBOL(sys_rename);
 EXPORT_SYMBOL(vfs_rmdir);
+EXPORT_SYMBOL(sys_rmdir);
 EXPORT_SYMBOL(vfs_symlink);
+EXPORT_SYMBOL(sys_symlink);
 EXPORT_SYMBOL(vfs_unlink);
+EXPORT_SYMBOL(sys_unlink);
 EXPORT_SYMBOL(dentry_unhash);
 EXPORT_SYMBOL(generic_readlink);
diff --git a/fs/open.c b/fs/open.c
index 3827b63..c9d390d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -518,6 +518,7 @@ SYSCALL_DEFINE2(chmod, const char __user *, filename, umode_t, mode)
 {
 	return sys_fchmodat(AT_FDCWD, filename, mode);
 }
+EXPORT_SYMBOL(sys_chmod);
 
 static int chown_common(struct path *path, uid_t user, gid_t group)
 {
@@ -597,6 +598,7 @@ SYSCALL_DEFINE3(lchown, const char __user *, filename, uid_t, user, gid_t, group
 	return sys_fchownat(AT_FDCWD, filename, user, group,
 			    AT_SYMLINK_NOFOLLOW);
 }
+EXPORT_SYMBOL(sys_lchown);
 
 SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group)
 {
diff --git a/fs/utimes.c b/fs/utimes.c
index f4fb7ec..6afbba8 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -1,3 +1,4 @@
+#include <linux/module.h>
 #include <linux/compiler.h>
 #include <linux/file.h>
 #include <linux/fs.h>
@@ -174,6 +175,7 @@ retry:
 out:
 	return error;
 }
+EXPORT_SYMBOL(do_utimes);
 
 SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
 		struct timespec __user *, utimes, int, flags)
diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h
index 6a8ca98..faf6692 100644
--- a/include/uapi/linux/major.h
+++ b/include/uapi/linux/major.h
@@ -146,6 +146,7 @@
 #define UNIX98_PTY_SLAVE_MAJOR	(UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT)
 
 #define DRBD_MAJOR		147
+#define MARS_MAJOR		148
 #define RTF_MAJOR		150
 #define RAW_MAJOR		162
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7abab3b..ff37656 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -206,6 +206,7 @@ static char * const zone_names[MAX_NR_ZONES] = {
 };
 
 int min_free_kbytes = 1024;
+EXPORT_SYMBOL(min_free_kbytes);
 int user_min_free_kbytes;
 
 static unsigned long __meminitdata nr_kernel_pages;
@@ -5670,6 +5671,7 @@ static void __setup_per_zone_wmarks(void)
 	/* update totalreserve_pages */
 	calculate_totalreserve_pages();
 }
+EXPORT_SYMBOL(setup_per_zone_wmarks);
 
 /**
  * setup_per_zone_wmarks - called when min_free_kbytes changes
-- 
2.9.2