s390/compat: add sync_file_range and fallocate compat syscalls

The compat syscall wrappers for sync_file_range and fallocate merged 32 bit
parameters into 64 bit parameters. Therefore they did more than just the
usual zero and/or sign extension of system call parameters.

So convert these two wrappers to full s390 specific compat sytem calls.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 59097741f509..ca38139423ae 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -504,3 +504,17 @@ COMPAT_SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, arg
                 a.advice = POSIX_FADV_NOREUSE;
         return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
 }
+
+COMPAT_SYSCALL_DEFINE6(s390_sync_file_range, int, fd, u32, offhigh, u32, offlow,
+                       u32, nhigh, u32, nlow, unsigned int, flags)
+{
+        return sys_sync_file_range(fd, ((loff_t)offhigh << 32) + offlow,
+                                   ((u64)nhigh << 32) + nlow, flags);
+}
+
+COMPAT_SYSCALL_DEFINE6(s390_fallocate, int, fd, int, mode, u32, offhigh, u32, offlow,
+                       u32, lenhigh, u32, lenlow)
+{
+        return sys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow,
+                             ((u64)lenhigh << 32) + lenlow);
+}