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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 11:34:46 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:16:11 +0200
commita90f590a1bee36fc2129cfb38ceec24a555bb12d (patch)
tree42e18715d5070d0f428464ba40b4ed136363f6e2 /arch/parisc/kernel
parent9d5b7c956b09daab955fb2a42447d5d89ff15093 (diff)
downloadop-kernel-dev-a90f590a1bee36fc2129cfb38ceec24a555bb12d.zip
op-kernel-dev-a90f590a1bee36fc2129cfb38ceec24a555bb12d.tar.gz
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 <akpm@linux-foundation.org> Cc: linux-mm@kvack.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'arch/parisc/kernel')
-rw-r--r--arch/parisc/kernel/sys_parisc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index f36ab1f..080d566 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -270,8 +270,8 @@ asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
{
/* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE
we have. */
- return sys_mmap_pgoff(addr, len, prot, flags, fd,
- pgoff >> (PAGE_SHIFT - 12));
+ return ksys_mmap_pgoff(addr, len, prot, flags, fd,
+ pgoff >> (PAGE_SHIFT - 12));
}
asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
@@ -279,7 +279,7 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
unsigned long offset)
{
if (!(offset & ~PAGE_MASK)) {
- return sys_mmap_pgoff(addr, len, prot, flags, fd,
+ return ksys_mmap_pgoff(addr, len, prot, flags, fd,
offset >> PAGE_SHIFT);
} else {
return -EINVAL;
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