Unify sys_mmap*

New helper - sys_mmap_pgoff(); switch syscalls to using it.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 17 deletions

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 1a2793efdc4e..f042563c924f 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -67,28 +67,13 @@ SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
         unsigned long, prot, unsigned long, flags, unsigned long, fd,
         unsigned long, pgoff)
 {
-        struct file * file = NULL;
         unsigned long error;
 
         error = -EINVAL;
         if (pgoff & (~PAGE_MASK >> 12))
                 goto out;
-        pgoff >>= PAGE_SHIFT-12;
-
-        if (!(flags & MAP_ANONYMOUS)) {
-                error = -EBADF;
-                file = fget(fd);
-                if (!file)
-                        goto out;
-        }
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-
-        down_write(&current->mm->mmap_sem);
-        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-        up_write(&current->mm->mmap_sem);
-        if (file)
-                fput(file);
-
+        error = sys_mmap_pgoff(addr, len, prot, flags, fd,
+                               pgoff >> (PAGE_SHIFT-12));
 out:
         return error;
 }