From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q144U7tR185609 for ; Fri, 3 Feb 2012 22:30:07 -0600 Received: from mail.sandeen.net (sandeen.net [63.231.237.45]) by cuda.sgi.com with ESMTP id w7hUwZVEE9L3FZRI for ; Fri, 03 Feb 2012 20:30:06 -0800 (PST) Message-ID: <4F2CB44D.4060006@sandeen.net> Date: Fri, 03 Feb 2012 22:30:05 -0600 From: Eric Sandeen MIME-Version: 1.0 Subject: Re: [PATCH 5/8] xfs: Protect xfs_file_aio_write() & xfs_setattr_size() with sb_start_write - sb_end_write References: <1327091686-23177-1-git-send-email-jack@suse.cz> <1327091686-23177-6-git-send-email-jack@suse.cz> In-Reply-To: <1327091686-23177-6-git-send-email-jack@suse.cz> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Jan Kara Cc: Alex Elder , Surbhi Palande , Kamal Mostafa , LKML , xfs@oss.sgi.com, Christoph Hellwig , Ben Myers , Dave Chinner , linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org On 1/20/12 2:34 PM, Jan Kara wrote: > Replace racy xfs_wait_for_freeze() check in xfs_file_aio_write() with > a reliable sb_start_write() - sb_end_write() locking. Here's what I'm running with now. With this and my modified patch6, I can pass xfstests 068 on xfs. -Eric diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 7e5bc87..f1cacdc 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -874,11 +874,11 @@ xfs_file_aio_write( if (ocount == 0) return 0; - xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; + sb_start_write(inode->i_sb, SB_FREEZE_WRITE); + if (unlikely(file->f_flags & O_DIRECT)) ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, ocount); else @@ -895,6 +895,7 @@ xfs_file_aio_write( if (err < 0) ret = err; } + sb_end_write(inode->i_sb, SB_FREEZE_WRITE); return ret; } diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index ab30253..7f3fa17 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -773,6 +773,7 @@ xfs_setattr_size( ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); + sb_start_write(inode->i_sb, SB_FREEZE_WRITE); lock_flags = XFS_ILOCK_EXCL; if (!(flags & XFS_ATTR_NOLOCK)) lock_flags |= XFS_IOLOCK_EXCL; @@ -792,6 +793,7 @@ xfs_setattr_size( * Use the regular setattr path to update the timestamps. */ xfs_iunlock(ip, lock_flags); + sb_end_write(inode->i_sb, SB_FREEZE_WRITE); iattr->ia_valid &= ~ATTR_SIZE; return xfs_setattr_nonsize(ip, iattr, 0); } @@ -938,6 +940,7 @@ xfs_setattr_size( out_unlock: if (lock_flags) xfs_iunlock(ip, lock_flags); + sb_end_write(inode->i_sb, SB_FREEZE_WRITE); return error; out_trans_abort: _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs