From patchwork Sun Jun 5 22:54:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paulo Alcantara X-Patchwork-Id: 12869867 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1B03C43334 for ; Sun, 5 Jun 2022 22:55:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348554AbiFEWzA (ORCPT ); Sun, 5 Jun 2022 18:55:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234832AbiFEWy7 (ORCPT ); Sun, 5 Jun 2022 18:54:59 -0400 Received: from mx.cjr.nz (mx.cjr.nz [51.158.111.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E072E4EDD9 for ; Sun, 5 Jun 2022 15:54:57 -0700 (PDT) Received: from authenticated-user (mx.cjr.nz [51.158.111.142]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: pc) by mx.cjr.nz (Postfix) with ESMTPSA id 1D6E57FC20; Sun, 5 Jun 2022 22:54:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cjr.nz; s=dkim; t=1654469695; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=e+5HFztMcF2H4tNI9LMWNI/bz5LaJU8OGJLFN8iLSJ0=; b=hK2CVFyoD/ZsTZuHosl0M3smMOWOqDGqso8pNm4m3Ik70sTwvAGyWzTPsFENelU2DtU0Ng hAv1Z0EY8hpgxAt2t5wh7DuOVutDDsLLTNa4F/s+u9NIqV0iJEj7xFXwHIN4HyTDus7B9s Cvbmo5cLoiiH/dIO1tAP39yyDI+YZK7474ZdU0fmWvnxh32lKb8x8AMI8pKd5TRPJzNJgT 05pDY1bnp723O/IfRwwO8xIHVWqjEEyJa0RQpDlSh3gU4DQRIl26yXlfG5rugmoJkCuWQJ dhmJ8to3Kycxdg/RIqz4W11Cfi/1wc1uaDWdmtUMxU6yV3PVBoDq9WnLWKXg7A== From: Paulo Alcantara To: smfrench@gmail.com Cc: linux-cifs@vger.kernel.org, Paulo Alcantara , Satadru Pramanik Subject: [PATCH] cifs: fix reconnect on smb3 mount types Date: Sun, 5 Jun 2022 19:54:26 -0300 Message-Id: <20220605225426.8558-1-pc@cjr.nz> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org cifs.ko defines two file system types: cifs & smb3, and __cifs_get_super() was not including smb3 file system type when looking up superblocks, therefore failing to reconnect tcons in cifs_tree_connect(). Fix this by calling iterate_supers_type() on both file system types. Link: https://lore.kernel.org/r/CAFrh3J9soC36+BVuwHB=g9z_KB5Og2+p2_W+BBoBOZveErz14w@mail.gmail.com Reported-by: Satadru Pramanik Signed-off-by: Paulo Alcantara (SUSE) --- fs/cifs/cifsfs.c | 2 +- fs/cifs/cifsfs.h | 2 +- fs/cifs/misc.c | 27 ++++++++++++++++----------- 3 files changed, 18 insertions(+), 13 deletions(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 12c872800326..325423180fd2 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1086,7 +1086,7 @@ struct file_system_type cifs_fs_type = { }; MODULE_ALIAS_FS("cifs"); -static struct file_system_type smb3_fs_type = { +struct file_system_type smb3_fs_type = { .owner = THIS_MODULE, .name = "smb3", .init_fs_context = smb3_init_fs_context, diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index dd7e070ca243..b17be47a8e59 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -38,7 +38,7 @@ static inline unsigned long cifs_get_time(struct dentry *dentry) return (unsigned long) dentry->d_fsdata; } -extern struct file_system_type cifs_fs_type; +extern struct file_system_type cifs_fs_type, smb3_fs_type; extern const struct address_space_operations cifs_addr_ops; extern const struct address_space_operations cifs_addr_ops_smallbuf; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 35962a1a23b9..8e67a2d406ab 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -1211,18 +1211,23 @@ static struct super_block *__cifs_get_super(void (*f)(struct super_block *, void .data = data, .sb = NULL, }; + struct file_system_type **fs_type = (struct file_system_type *[]) { + &cifs_fs_type, &smb3_fs_type, NULL, + }; - iterate_supers_type(&cifs_fs_type, f, &sd); - - if (!sd.sb) - return ERR_PTR(-EINVAL); - /* - * Grab an active reference in order to prevent automounts (DFS links) - * of expiring and then freeing up our cifs superblock pointer while - * we're doing failover. - */ - cifs_sb_active(sd.sb); - return sd.sb; + for (; *fs_type; fs_type++) { + iterate_supers_type(*fs_type, f, &sd); + if (sd.sb) { + /* + * Grab an active reference in order to prevent automounts (DFS links) + * of expiring and then freeing up our cifs superblock pointer while + * we're doing failover. + */ + cifs_sb_active(sd.sb); + return sd.sb; + } + } + return ERR_PTR(-EINVAL); } static void __cifs_put_super(struct super_block *sb)