[PATCH] 9p: fix rename return code

9p doesn't handle renames between directories -- however, we were returning
EPERM instead of EXDEV when we detected this case.

Signed-off-by: Eric Van Hensbergren <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/9p/vfs_inode.c

···
 	/* 9P can only handle file rename in the same directory */
 	if (memcmp(&olddirfid->qid, &newdirfid->qid, sizeof(newdirfid->qid))) {
 		dprintk(DEBUG_ERROR, "old dir and new dir are different\n");
-		retval = -EPERM;
+		retval = -EXDEV;
 		goto FreeFcallnBail;
 	}