fuse: clean up open file passing in setattr

Clean up supplying open file to the setattr operation.  In addition to being a
cleanup it prepares for the changes in the way the open file is passed to the
setattr method.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/fuse/dir.c

@@ -1032,11 +1032,6 @@ static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg)
 		arg->atime = iattr->ia_atime.tv_sec;
 		arg->mtime = iattr->ia_mtime.tv_sec;
 	}
-	if (ivalid & ATTR_FILE) {
-		struct fuse_file *ff = iattr->ia_file->private_data;
-		arg->valid |= FATTR_FH;
-		arg->fh = ff->fh;
-	}
 }
 
 /*
@@ -1047,7 +1042,8 @@ static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg)
  * vmtruncate() doesn't allow for this case, so do the rlimit checking
  * and the actual truncation by hand.
  */
-static int fuse_setattr(struct dentry *entry, struct iattr *attr)
+static int fuse_do_setattr(struct dentry *entry, struct iattr *attr,
+			   struct file *file)
 {
 	struct inode *inode = entry->d_inode;
 	struct fuse_conn *fc = get_fuse_conn(inode);
@@ -1082,6 +1078,11 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
 
 	memset(&inarg, 0, sizeof(inarg));
 	iattr_to_fattr(attr, &inarg);
+	if (file) {
+		struct fuse_file *ff = file->private_data;
+		inarg.valid |= FATTR_FH;
+		inarg.fh = ff->fh;
+	}
 	req->in.h.opcode = FUSE_SETATTR;
 	req->in.h.nodeid = get_node_id(inode);
 	req->in.numargs = 1;
@@ -1108,6 +1109,14 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
 	return 0;
 }
 
+static int fuse_setattr(struct dentry *entry, struct iattr *attr)
+{
+	if (attr->ia_valid & ATTR_FILE)
+		return fuse_do_setattr(entry, attr, attr->ia_file);
+	else
+		return fuse_do_setattr(entry, attr, NULL);
+}
+
 static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
 			struct kstat *stat)
 {