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From db0dd0a027dd423781b5dd3b2f21fab029f05b78 Mon Sep 17 00:00:00 2001
From: Thomas Schoebel-Theuer <tst@1und1.de>
Date: Thu, 30 Jan 2020 12:43:08 +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 f15e87e8a1dd..6f852abb76d2 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -162,6 +162,7 @@ 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;
@@ -1318,6 +1319,7 @@ 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
@@ -1354,6 +1356,7 @@ 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);
@@ -1645,6 +1648,7 @@ 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
@@ -1735,6 +1739,7 @@ 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
@@ -1764,3 +1769,4 @@ 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 2ec89079ddbd..2eb0659d6cfa 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3544,6 +3544,7 @@ SYSCALL_DEFINE2(mkdir, const char __user *, pathname, umode_t, mode)
{
return sys_mkdirat(AT_FDCWD, pathname, mode);
}
+EXPORT_SYMBOL(sys_mkdir);
/*
* The dentry_unhash() helper will try to drop the dentry early: we
@@ -3669,6 +3670,7 @@ SYSCALL_DEFINE1(rmdir, const char __user *, pathname)
{
return do_rmdir(AT_FDCWD, pathname);
}
+EXPORT_SYMBOL(sys_rmdir);
/**
* vfs_unlink - unlink a filesystem object
@@ -3818,6 +3820,7 @@ 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)
{
@@ -3875,6 +3878,7 @@ 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
@@ -4359,6 +4363,7 @@ 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 readlink_copy(char __user *buffer, int buflen, const char *link)
{
diff --git a/fs/open.c b/fs/open.c
index c4949a39726a..0a21eed33aac 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -545,6 +545,7 @@ 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)
{
@@ -630,6 +631,7 @@ 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 61abc3051377..ccaf6d557383 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/linux/aio.h b/include/linux/aio.h
index d9c92daa3944..0706fad42946 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -70,6 +70,7 @@ 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_complete(struct kiocb *iocb, long res, long res2);
struct mm_struct;
diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h
index 620252e69b44..61a665cdb420 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 b491f75f7491..fc1de14eca43 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -207,6 +207,7 @@ static char * const zone_names[MAX_NR_ZONES] = {
};
int min_free_kbytes = 1024;
+EXPORT_SYMBOL(min_free_kbytes);
int user_min_free_kbytes = -1;
static unsigned long __meminitdata nr_kernel_pages;
@@ -5773,6 +5774,7 @@ 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
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