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-rw-r--r--arch/alpha/kernel/osf_sys.c19
1 files changed, 6 insertions, 13 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 9a3334ae282..62619f25132 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -178,25 +178,18 @@ SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags, unsigned long, fd,
unsigned long, off)
{
- struct file *file = NULL;
- unsigned long ret = -EBADF;
+ unsigned long ret = -EINVAL;
#if 0
if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
printk("%s: unimplemented OSF mmap flags %04lx\n",
current->comm, flags);
#endif
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- goto out;
- }
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- down_write(&current->mm->mmap_sem);
- ret = do_mmap(file, addr, len, prot, flags, off);
- up_write(&current->mm->mmap_sem);
- if (file)
- fput(file);
+ if ((off + PAGE_ALIGN(len)) < off)
+ goto out;
+ if (off & ~PAGE_MASK)
+ goto out;
+ ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
out:
return ret;
}