commit f8b7256096a20436f6d0926747e3ac3d64c81d24
author Al Viro <viro@zeniv.linux.org.uk> Mon Nov 30 17:37:04 2009 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Fri Dec 11 06:44:29 2009 -0500
tree 18bcabd1de263bd2d0f8d6b763bde8b037716c5c
parent 0067bd8a55862ac9dd212bd1c4f6f5bff1ca1301

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>

arch/mips/kernel/linux32.c

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 1a2793e..f042563 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -67,28 +67,13 @@
 	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;
 }