mars/pre-patches/vanilla-3.10/0001-mars-minimum-pre-patch-for-mars.patch

From 26df83dc7dd3bc7ef446bf49f3b398f5e2165ad0 Mon Sep 17 00:00:00 2001
From: Thomas Schoebel-Theuer <tst@1und1.de>
Date: Thu, 30 Jan 2020 12:16:02 +0100
Subject: [PATCH] mars: minimum pre-patch for mars

Mostly introduces some EXPORT_SYMBOL().
Should have almost no impact onto the kernel.
---
 fs/aio.c                   | 6 ++++++
 fs/namei.c                 | 5 +++++
 fs/open.c                  | 2 ++
 fs/utimes.c                | 2 ++
 include/linux/aio.h        | 1 +
 include/uapi/linux/major.h | 1 +
 mm/page_alloc.c            | 2 ++
 7 files changed, 19 insertions(+)

diff --git a/fs/aio.c b/fs/aio.c
index 9798d4edfd8f..5ac48388b052 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -114,6 +114,7 @@ struct kioctx {
 static DEFINE_SPINLOCK(aio_nr_lock);
 unsigned long aio_nr;		/* current system wide number of aio requests */
 unsigned long aio_max_nr = 0x10000; /* system wide maximum number of aio requests */
+EXPORT_SYMBOL_GPL(aio_max_nr);
 /*----end sysctl variables---*/
 
 static struct kmem_cache	*kiocb_cachep;
@@ -861,6 +862,7 @@ 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 
@@ -879,6 +881,7 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
 	pr_debug("EINVAL: io_destroy: invalid context id\n");
 	return -EINVAL;
 }
+EXPORT_SYMBOL(sys_io_destroy);
 
 static void aio_advance_iovec(struct kiocb *iocb, ssize_t ret)
 {
@@ -1203,6 +1206,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
 	put_ioctx(ctx);
 	return i ? i : ret;
 }
+EXPORT_SYMBOL(sys_io_submit);
 
 /* sys_io_submit:
  *	Queue the nr iocbs pointed to by iocbpp for processing.  Returns
@@ -1293,6 +1297,7 @@ 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
@@ -1322,3 +1327,4 @@ 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 c87e15ee9255..03fb16b6386f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4124,12 +4124,17 @@ EXPORT_SYMBOL(vfs_create);
 EXPORT_SYMBOL(vfs_follow_link);
 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 5f129683b7d7..26baee9d31fc 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -519,6 +519,7 @@ 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)
 {
@@ -598,6 +599,7 @@ 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 f4fb7eca10e8..6afbba82f6eb 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/linux/aio.h b/include/linux/aio.h
index 1bdf965339f9..1f4bbb69e1ba 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -83,6 +83,7 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
 
 /* prototypes */
 #ifdef CONFIG_AIO
+#define HAS_AIO_MAX
 extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
 extern void aio_put_req(struct kiocb *iocb);
 extern void aio_complete(struct kiocb *iocb, long res, long res2);
diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h
index 6a8ca98c9a96..faf6692896dd 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 829ee76d5521..c0b62985649c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -197,6 +197,7 @@ static char * const zone_names[MAX_NR_ZONES] = {
 };
 
 int min_free_kbytes = 1024;
+EXPORT_SYMBOL(min_free_kbytes);
 
 static unsigned long __meminitdata nr_kernel_pages;
 static unsigned long __meminitdata nr_all_pages;
@@ -5382,6 +5383,7 @@ 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
-- 
2.25.0