Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752396Ab3F1Swf (ORCPT ); Fri, 28 Jun 2013 14:52:35 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:41506 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751589Ab3F1Sw1 (ORCPT ); Fri, 28 Jun 2013 14:52:27 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Dave Kleikamp , Kamal Mostafa Subject: [PATCH 018/105] jfs: fix a couple races Date: Fri, 28 Jun 2013 11:50:40 -0700 Message-Id: <1372445527-24414-19-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1372445527-24414-1-git-send-email-kamal@canonical.com> References: <1372445527-24414-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2193 Lines: 64 3.8.13.4 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Kleikamp commit 73aaa22d5ffb2630456bac2f9a4ed9b81d0d7271 upstream. This patch fixes races uncovered by xfstests testcase 068. One race is the result of jfs_sync() trying to write a sync point to the journal after it has been frozen (or possibly in the process). Since freezing sync's the journal, there is no need to write a sync point so we simply want to return. The second involves jfs_write_inode() being called on a deleted inode. It calls jfs_flush_journal which is held up by the jfs_commit thread doing the final iput on the same deleted inode, which itself is waiting for the I_SYNC flag to be cleared. jfs_write_inode need not do anything when i_nlink is zero, which is the easy fix. Reported-by: Michael L. Semon Signed-off-by: Dave Kleikamp Signed-off-by: Kamal Mostafa --- fs/jfs/inode.c | 2 +- fs/jfs/jfs_logmgr.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index b7dc47b..77554b6 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -125,7 +125,7 @@ int jfs_write_inode(struct inode *inode, struct writeback_control *wbc) { int wait = wbc->sync_mode == WB_SYNC_ALL; - if (test_cflag(COMMIT_Nolink, inode)) + if (inode->i_nlink == 0) return 0; /* * If COMMIT_DIRTY is not set, the inode isn't really dirty. diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 2eb952c..cbe48ea 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1058,7 +1058,8 @@ static int lmLogSync(struct jfs_log * log, int hard_sync) */ void jfs_syncpt(struct jfs_log *log, int hard_sync) { LOG_LOCK(log); - lmLogSync(log, hard_sync); + if (!test_bit(log_QUIESCE, &log->flag)) + lmLogSync(log, hard_sync); LOG_UNLOCK(log); } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/