From a90f590a1bee36fc2129cfb38ceec24a555bb12d Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sun, 11 Mar 2018 11:34:46 +0100 Subject: mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff() Using this helper allows us to avoid the in-kernel calls to the sys_mmap_pgoff() syscall. The ksys_ prefix denotes that this function is meant as a drop-in replacement for the syscall. In particular, it uses the same calling convention as sys_mmap_pgoff(). This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Andrew Morton Cc: linux-mm@kvack.org Signed-off-by: Dominik Brodowski --- arch/ia64/kernel/sys_ia64.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/ia64') diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index 085adfcc74a4..9ebe1d633abc 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -139,7 +139,7 @@ int ia64_mmap_check(unsigned long addr, unsigned long len, asmlinkage unsigned long sys_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, long pgoff) { - addr = sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); + addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); if (!IS_ERR((void *) addr)) force_successful_syscall_return(); return addr; @@ -151,7 +151,7 @@ sys_mmap (unsigned long addr, unsigned long len, int prot, int flags, int fd, lo if (offset_in_page(off) != 0) return -EINVAL; - addr = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); if (!IS_ERR((void *) addr)) force_successful_syscall_return(); return addr; -- cgit v1.2.3