arm64: Use the generic compat_sys_sendfile() implementation

The generic implementation of compat_sys_sendfile() has been introduced
by commit 8f9c0119. This patch removes the arm64 implementation in
favour of the generic one.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

2 files changed, 1 insertions, 20 deletions

diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 3ba1f1a90629..ba42d41fc5c2 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -752,3 +752,4 @@ __SYSCALL(__NR_syncfs, sys_syncfs)
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_SIGPROCMASK
 #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_COMPAT_SYS_SENDFILE
diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c
index 967e92fdff01..93f10e27dc79 100644
--- a/arch/arm64/kernel/sys_compat.c
+++ b/arch/arm64/kernel/sys_compat.c
@@ -84,26 +84,6 @@ asmlinkage int compat_sys_sched_rr_get_interval(compat_pid_t pid,
         return ret;
 }
 
-asmlinkage int compat_sys_sendfile(int out_fd, int in_fd,
-                                   compat_off_t __user *offset, s32 count)
-{
-        mm_segment_t old_fs = get_fs();
-        int ret;
-        off_t of;
-
-        if (offset && get_user(of, offset))
-                return -EFAULT;
-
-        set_fs(KERNEL_DS);
-        ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL,
-                           count);
-        set_fs(old_fs);
-
-        if (offset && put_user(of, offset))
-                return -EFAULT;
-        return ret;
-}
-
 static inline void
 do_compat_cache_op(unsigned long start, unsigned long end, int flags)
 {