From 169fad2681eaa91efbc1bcdcbda57096cb23b4ec 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 155f842..a0af087 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1342,6 +1342,7 @@ 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 
@@ -1378,6 +1379,7 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
 	pr_debug("EINVAL: invalid context id\n");
 	return -EINVAL;
 }
+EXPORT_SYMBOL(sys_io_destroy);
 
 typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *);
 
@@ -1621,6 +1623,7 @@ 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
@@ -1710,6 +1713,7 @@ 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
@@ -1739,3 +1743,4 @@ 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 aaa3b69..8966c71 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3697,6 +3697,7 @@ SYSCALL_DEFINE2(mkdir, const char __user *, pathname, umode_t, mode)
 {
 	return sys_mkdirat(AT_FDCWD, pathname, mode);
 }
+EXPORT_SYMBOL(sys_mkdir);
 
 int vfs_rmdir(struct inode *dir, struct dentry *dentry)
 {
@@ -3800,6 +3801,7 @@ SYSCALL_DEFINE1(rmdir, const char __user *, pathname)
 {
 	return do_rmdir(AT_FDCWD, pathname);
 }
+EXPORT_SYMBOL(sys_rmdir);
 
 /**
  * vfs_unlink - unlink a filesystem object
@@ -3953,6 +3955,7 @@ SYSCALL_DEFINE1(unlink, const char __user *, pathname)
 {
 	return do_unlinkat(AT_FDCWD, pathname);
 }
+EXPORT_SYMBOL(sys_unlink);
 
 int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)
 {
@@ -4010,6 +4013,7 @@ SYSCALL_DEFINE2(symlink, const char __user *, oldname, const char __user *, newn
 {
 	return sys_symlinkat(oldname, AT_FDCWD, newname);
 }
+EXPORT_SYMBOL(sys_symlink);
 
 /**
  * vfs_link - create a new link
@@ -4503,6 +4507,7 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna
 {
 	return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
 }
+EXPORT_SYMBOL(sys_rename);
 
 int vfs_whiteout(struct inode *dir, struct dentry *dentry)
 {
diff --git a/fs/open.c b/fs/open.c
index 081d3d6..d8f99f5 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -563,6 +563,7 @@ 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)
 {
@@ -648,6 +649,7 @@ 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 85c40f4..cb72b0d 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>
@@ -181,6 +182,7 @@ 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 620252e..61a665c 100644
--- a/include/uapi/linux/major.h
+++ b/include/uapi/linux/major.h
@@ -148,6 +148,7 @@
 #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 ff50f59..79ebfee 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -248,6 +248,7 @@ compound_page_dtor * const compound_page_dtors[] = {
 };
 
 int min_free_kbytes = 1024;
+EXPORT_SYMBOL(min_free_kbytes);
 int user_min_free_kbytes = -1;
 int watermark_scale_factor = 10;
 
@@ -6381,6 +6382,7 @@ 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