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>

2 files changed, 4 insertions, 36 deletions

diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c
index 07cabed4b947..9f3c205fb75b 100644
--- a/arch/microblaze/kernel/sys_microblaze.c
+++ b/arch/microblaze/kernel/sys_microblaze.c
@@ -62,46 +62,14 @@ out:
         return error;
 }
 
-asmlinkage long
-sys_mmap2(unsigned long addr, unsigned long len,
-        unsigned long prot, unsigned long flags,
-        unsigned long fd, unsigned long pgoff)
-{
-        struct file *file = NULL;
-        int ret = -EBADF;
-
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-        if (!(flags & MAP_ANONYMOUS)) {
-                file = fget(fd);
-                if (!file) {
-                        printk(KERN_INFO "no fd in mmap\r\n");
-                        goto out;
-                }
-        }
-
-        down_write(&current->mm->mmap_sem);
-        ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-        up_write(&current->mm->mmap_sem);
-        if (file)
-                fput(file);
-out:
-        return ret;
-}
-
 asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
                         unsigned long prot, unsigned long flags,
                         unsigned long fd, off_t pgoff)
 {
-        int err = -EINVAL;
-
-        if (pgoff & ~PAGE_MASK) {
-                printk(KERN_INFO "no pagemask in mmap\r\n");
-                goto out;
-        }
+        if (pgoff & ~PAGE_MASK)
+                return -EINVAL;
 
-        err = sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
-out:
-        return err;
+        return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
 }
 
 /*
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index c1ab1dc10898..b96f365ea6b1 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -196,7 +196,7 @@ ENTRY(sys_call_table)
         .long sys_ni_syscall            /* reserved for streams2 */
         .long sys_vfork         /* 190 */
         .long sys_getrlimit
-        .long sys_mmap2                 /* mmap2 */
+        .long sys_mmap_pgoff            /* mmap2 */
         .long sys_truncate64
         .long sys_ftruncate64
         .long sys_stat64                /* 195 */