mirror of
https://github.com/schoebel/mars
synced 2024-12-23 07:03:09 +00:00
206 lines
6.5 KiB
Diff
206 lines
6.5 KiB
Diff
From 5feb058b6e23e4400a99fec82c8d158b6017597f Mon Sep 17 00:00:00 2001
|
|
From: Thomas Schoebel-Theuer <tst@1und1.de>
|
|
Date: Mon, 25 Jan 2021 13:03:54 +0100
|
|
Subject: [PATCH] mars: v2 minimum pre-patch for mars
|
|
|
|
---
|
|
fs/aio.c | 45 ++++++++++++++++++++++++++++++++++----
|
|
fs/utimes.c | 2 ++
|
|
include/linux/aio.h | 1 +
|
|
include/linux/syscalls.h | 10 +++++++++
|
|
include/uapi/linux/major.h | 1 +
|
|
mm/page_alloc.c | 2 ++
|
|
6 files changed, 57 insertions(+), 4 deletions(-)
|
|
|
|
diff --git a/fs/aio.c b/fs/aio.c
|
|
index 413ec289bfa1..b21db36fdb82 100644
|
|
--- a/fs/aio.c
|
|
+++ b/fs/aio.c
|
|
@@ -216,6 +216,7 @@ struct aio_kiocb {
|
|
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;
|
|
@@ -1301,7 +1302,7 @@ static long read_events(struct kioctx *ctx, long min_nr, long nr,
|
|
* pointer is passed for ctxp. Will fail with -ENOSYS if not
|
|
* implemented.
|
|
*/
|
|
-SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
|
|
+long ksys_io_setup(unsigned nr_events, aio_context_t *ctxp)
|
|
{
|
|
struct kioctx *ioctx = NULL;
|
|
unsigned long ctx;
|
|
@@ -1330,6 +1331,12 @@ SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
|
|
out:
|
|
return ret;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(ksys_io_setup);
|
|
+
|
|
+SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp)
|
|
+{
|
|
+ return ksys_io_setup(nr_events, ctxp);
|
|
+}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_events, u32 __user *, ctx32p)
|
|
@@ -1370,7 +1377,7 @@ COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_events, u32 __user *, ctx32p)
|
|
* implemented. May fail with -EINVAL if the context pointed to
|
|
* is invalid.
|
|
*/
|
|
-SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
|
|
+long ksys_io_destroy(aio_context_t ctx)
|
|
{
|
|
struct kioctx *ioctx = lookup_ioctx(ctx);
|
|
if (likely(NULL != ioctx)) {
|
|
@@ -1399,6 +1406,12 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
|
|
pr_debug("EINVAL: invalid context id\n");
|
|
return -EINVAL;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(ksys_io_destroy);
|
|
+
|
|
+SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
|
|
+{
|
|
+ return ksys_io_destroy(ctx);
|
|
+}
|
|
|
|
static void aio_remove_iocb(struct aio_kiocb *iocb)
|
|
{
|
|
@@ -1921,8 +1934,8 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
|
|
* are available to queue any iocbs. Will return 0 if nr is 0. Will
|
|
* fail with -ENOSYS if not implemented.
|
|
*/
|
|
-SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
|
|
- struct iocb __user * __user *, iocbpp)
|
|
+long ksys_io_submit(aio_context_t ctx_id, long nr,
|
|
+ struct iocb __user *__user *iocbpp)
|
|
{
|
|
struct kioctx *ctx;
|
|
long ret = 0;
|
|
@@ -1959,6 +1972,13 @@ SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
|
|
percpu_ref_put(&ctx->users);
|
|
return i ? i : ret;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(ksys_io_submit);
|
|
+
|
|
+SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
|
|
+ struct iocb __user * __user *, iocbpp)
|
|
+{
|
|
+ return ksys_io_submit(ctx_id, nr, iocbpp);
|
|
+}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
COMPAT_SYSCALL_DEFINE3(io_submit, compat_aio_context_t, ctx_id,
|
|
@@ -2073,6 +2093,23 @@ static long do_io_getevents(aio_context_t ctx_id,
|
|
return ret;
|
|
}
|
|
|
|
+long ksys_io_getevents(aio_context_t ctx_id,
|
|
+ long min_nr,
|
|
+ long nr,
|
|
+ struct io_event __user * events,
|
|
+ struct timespec __user * timeout)
|
|
+{
|
|
+ struct timespec64 ts;
|
|
+
|
|
+ if (timeout) {
|
|
+ if (unlikely(get_timespec64(&ts, timeout)))
|
|
+ return -EFAULT;
|
|
+ }
|
|
+
|
|
+ return do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &ts : NULL);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(ksys_io_getevents);
|
|
+
|
|
/* io_getevents:
|
|
* Attempts to read at least min_nr events and up to nr events from
|
|
* the completion queue for the aio_context specified by ctx_id. If
|
|
diff --git a/fs/utimes.c b/fs/utimes.c
|
|
index 69d4b6ba1bfb..0215521c5dbe 100644
|
|
--- a/fs/utimes.c
|
|
+++ b/fs/utimes.c
|
|
@@ -1,4 +1,5 @@
|
|
// SPDX-License-Identifier: GPL-2.0
|
|
+#include <linux/module.h>
|
|
#include <linux/file.h>
|
|
#include <linux/mount.h>
|
|
#include <linux/namei.h>
|
|
@@ -164,6 +165,7 @@ long do_utimes(int dfd, const char __user *filename, struct timespec64 *times,
|
|
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 b83e68dd006f..62061e975682 100644
|
|
--- a/include/linux/aio.h
|
|
+++ b/include/linux/aio.h
|
|
@@ -12,6 +12,7 @@ typedef int (kiocb_cancel_fn)(struct kiocb *);
|
|
|
|
/* prototypes */
|
|
#ifdef CONFIG_AIO
|
|
+#define HAS_AIO_MAX
|
|
extern void exit_aio(struct mm_struct *mm);
|
|
void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel);
|
|
#else
|
|
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
|
|
index 2ff814c92f7f..73daac4b9207 100644
|
|
--- a/include/linux/syscalls.h
|
|
+++ b/include/linux/syscalls.h
|
|
@@ -1126,6 +1126,16 @@ asmlinkage long sys_ni_syscall(void);
|
|
* the ksys_xyzyyz() functions prototyped below.
|
|
*/
|
|
|
|
+long ksys_io_submit(aio_context_t ctx_id, long nr,
|
|
+ struct iocb __user *__user *iocbpp);
|
|
+long ksys_io_getevents(aio_context_t ctx_id,
|
|
+ long min_nr,
|
|
+ long nr,
|
|
+ struct io_event __user * events,
|
|
+ struct timespec __user * timeout);
|
|
+long ksys_io_setup(unsigned nr_events, aio_context_t *ctxp);
|
|
+long ksys_io_destroy(aio_context_t ctx);
|
|
+
|
|
int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type,
|
|
unsigned long flags, void __user *data);
|
|
int ksys_umount(char __user *name, int flags);
|
|
diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h
|
|
index 7e5fa8e15c43..edfbce01e4ac 100644
|
|
--- a/include/uapi/linux/major.h
|
|
+++ b/include/uapi/linux/major.h
|
|
@@ -149,6 +149,7 @@
|
|
#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 4446a523e684..0f5271b870dd 100644
|
|
--- a/mm/page_alloc.c
|
|
+++ b/mm/page_alloc.c
|
|
@@ -263,6 +263,7 @@ 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;
|
|
|
|
@@ -7337,6 +7338,7 @@ 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
|
|
--
|
|
2.26.2
|
|
|