[12/15] s390: remove native mmap2() syscall

Message ID 20240620162316.3674955-13-arnd@kernel.org
State Not applicable
Headers
Series linux system call fixes |

Checks

Context Check Description
redhat-pt-bot/TryBot-apply_patch fail Patch failed to apply to master at the time it was sent

Commit Message

Arnd Bergmann June 20, 2024, 4:23 p.m. UTC
  From: Arnd Bergmann <arnd@arndb.de>

The mmap2() syscall has never been used on 64-bit s390x and should
have been removed as part of 5a79859ae0f3 ("s390: remove 31 bit
support").

Remove it now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/s390/kernel/syscall.c | 27 ---------------------------
 1 file changed, 27 deletions(-)
  

Comments

Heiko Carstens June 21, 2024, 2:17 p.m. UTC | #1
On Thu, Jun 20, 2024 at 06:23:13PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The mmap2() syscall has never been used on 64-bit s390x and should
> have been removed as part of 5a79859ae0f3 ("s390: remove 31 bit
> support").
> 
> Remove it now.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  arch/s390/kernel/syscall.c | 27 ---------------------------
>  1 file changed, 27 deletions(-)

Acked-by: Heiko Carstens <hca@linux.ibm.com>
  

Patch

diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c
index dc2355c623d6..50cbcbbaa03d 100644
--- a/arch/s390/kernel/syscall.c
+++ b/arch/s390/kernel/syscall.c
@@ -38,33 +38,6 @@ 
 
 #include "entry.h"
 
-/*
- * Perform the mmap() system call. Linux for S/390 isn't able to handle more
- * than 5 system call parameters, so this system call uses a memory block
- * for parameter passing.
- */
-
-struct s390_mmap_arg_struct {
-	unsigned long addr;
-	unsigned long len;
-	unsigned long prot;
-	unsigned long flags;
-	unsigned long fd;
-	unsigned long offset;
-};
-
-SYSCALL_DEFINE1(mmap2, struct s390_mmap_arg_struct __user *, arg)
-{
-	struct s390_mmap_arg_struct a;
-	int error = -EFAULT;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-	error = ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
-out:
-	return error;
-}
-
 #ifdef CONFIG_SYSVIPC
 /*
  * sys_ipc() is the de-multiplexer for the SysV IPC calls.