From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61B87C28CBC for ; Thu, 30 Apr 2020 14:04:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C17E2063A for ; Thu, 30 Apr 2020 14:04:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588255479; bh=BEuzn1F3QLNXEZk6t6Q48OeTTouPT/5eYZfE1fiQe8U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=zsQWihKIIYI8lLLwD3n5Y8Esbq0qhulggqre1mOw4ouvf1vZyNK5yZculKJpGjhqg XtgtremHMwXyAQzVqah8/HPYmvcTlAT+40hUzEk8UvU4lrwcgp2DExIDjR7TSOVKz4 6PE0MJYerjZ4NasNSO+tJzgpxRIVF3TdER+grDqc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728531AbgD3OEh (ORCPT ); Thu, 30 Apr 2020 10:04:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:35000 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728668AbgD3NxR (ORCPT ); Thu, 30 Apr 2020 09:53:17 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A31EC208DB; Thu, 30 Apr 2020 13:53:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588254797; bh=BEuzn1F3QLNXEZk6t6Q48OeTTouPT/5eYZfE1fiQe8U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JMx1xBMw2IEiMlBVVGDLlFhFLMi8S6WezjQnGhtvAfX7MBIAVDZ6dXcIcbvSgwvuR EymZo8hca9/HDInBaIN8Y94O2g7aI2aXmcip+CiL4eNmIWSNiPiinetTEl7RkWmY7g p+pvIIOn84RboyJBF83K4djl8/vVTEQcCexga6Oc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: David Howells , Sasha Levin , linux-afs@lists.infradead.org Subject: [PATCH AUTOSEL 5.4 52/57] afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate Date: Thu, 30 Apr 2020 09:52:13 -0400 Message-Id: <20200430135218.20372-52-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200430135218.20372-1-sashal@kernel.org> References: <20200430135218.20372-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Howells [ Upstream commit c4bfda16d1b40d1c5941c61b5aa336bdd2d9904a ] When an operation is meant to be done uninterruptibly (such as FS.StoreData), we should not be allowing volume and server record checking to be interrupted. Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation") Signed-off-by: David Howells Signed-off-by: Sasha Levin --- fs/afs/internal.h | 2 +- fs/afs/rotate.c | 6 +++--- fs/afs/server.c | 7 ++----- fs/afs/volume.c | 8 +++++--- 4 files changed, 11 insertions(+), 12 deletions(-) diff --git a/fs/afs/internal.h b/fs/afs/internal.h index d5efb1debebf4..485cc3b2aaa8a 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -1329,7 +1329,7 @@ extern struct afs_volume *afs_create_volume(struct afs_fs_context *); extern void afs_activate_volume(struct afs_volume *); extern void afs_deactivate_volume(struct afs_volume *); extern void afs_put_volume(struct afs_cell *, struct afs_volume *); -extern int afs_check_volume_status(struct afs_volume *, struct key *); +extern int afs_check_volume_status(struct afs_volume *, struct afs_fs_cursor *); /* * write.c diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c index 172ba569cd602..2a3305e42b145 100644 --- a/fs/afs/rotate.c +++ b/fs/afs/rotate.c @@ -192,7 +192,7 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc) write_unlock(&vnode->volume->servers_lock); set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags); - error = afs_check_volume_status(vnode->volume, fc->key); + error = afs_check_volume_status(vnode->volume, fc); if (error < 0) goto failed_set_error; @@ -281,7 +281,7 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc) set_bit(AFS_VOLUME_WAIT, &vnode->volume->flags); set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags); - error = afs_check_volume_status(vnode->volume, fc->key); + error = afs_check_volume_status(vnode->volume, fc); if (error < 0) goto failed_set_error; @@ -341,7 +341,7 @@ start: /* See if we need to do an update of the volume record. Note that the * volume may have moved or even have been deleted. */ - error = afs_check_volume_status(vnode->volume, fc->key); + error = afs_check_volume_status(vnode->volume, fc); if (error < 0) goto failed_set_error; diff --git a/fs/afs/server.c b/fs/afs/server.c index ca8115ba1724b..d3a9288f75566 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -595,12 +595,9 @@ retry: } ret = wait_on_bit(&server->flags, AFS_SERVER_FL_UPDATING, - TASK_INTERRUPTIBLE); + (fc->flags & AFS_FS_CURSOR_INTR) ? + TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE); if (ret == -ERESTARTSYS) { - if (!(fc->flags & AFS_FS_CURSOR_INTR) && server->addresses) { - _leave(" = t [intr]"); - return true; - } fc->error = ret; _leave(" = f [intr]"); return false; diff --git a/fs/afs/volume.c b/fs/afs/volume.c index 92ca5e27573b7..4310336b9bb8c 100644 --- a/fs/afs/volume.c +++ b/fs/afs/volume.c @@ -281,7 +281,7 @@ error: /* * Make sure the volume record is up to date. */ -int afs_check_volume_status(struct afs_volume *volume, struct key *key) +int afs_check_volume_status(struct afs_volume *volume, struct afs_fs_cursor *fc) { time64_t now = ktime_get_real_seconds(); int ret, retries = 0; @@ -299,7 +299,7 @@ retry: } if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) { - ret = afs_update_volume_status(volume, key); + ret = afs_update_volume_status(volume, fc->key); clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags); clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags); wake_up_bit(&volume->flags, AFS_VOLUME_WAIT); @@ -312,7 +312,9 @@ retry: return 0; } - ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, TASK_INTERRUPTIBLE); + ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, + (fc->flags & AFS_FS_CURSOR_INTR) ? + TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE); if (ret == -ERESTARTSYS) { _leave(" = %d", ret); return ret; -- 2.20.1