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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/ia64/kernel
parent9d5b7c956b09daab955fb2a42447d5d89ff15093 (diff)
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/ia64/kernel')
-rw-r--r--arch/ia64/kernel/sys_ia64.c4
1 files changed, 2 insertions, 2 deletions
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;