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From: Tejun Heo <tj@kernel.org>
To: Eryu Guan <eguan@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
	linux-kernel@vger.kernel.org, xfs@oss.sgi.com, axboe@fb.com,
	Jan Kara <jack@suse.com>,
	linux-fsdevel@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH block/for-linus] writeback: fix syncing of I_DIRTY_TIME inodes
Date: Thu, 20 Aug 2015 09:55:37 -0700	[thread overview]
Message-ID: <20150820165537.GA2044@mtj.duckdns.org> (raw)
In-Reply-To: <20150820143735.GJ17933@dhcp-13-216.nay.redhat.com>

Hello, Eryu.  Thanks a lot for the trace.

So, this is from the end of the trace from the failed test.

...
    kworker/u8:1-1563  [002] 22016.987530: xfs_writepage:        dev 253:6 ino 0xef64fe pgoff 0x9ff000 size 0xa00000 offset 0 length 0 delalloc 1 unwritten 0
     kworker/2:1-49    [002] 22017.373595: xfs_setfilesize:      dev 253:6 ino 0xef6504 isize 0xa00000 disize 0x0 offset 0x0 count 10481664
...

Maybe I'm misunderstanding the code but all xfs_writepage() calls are
from unbound workqueues - the writeback workers - while
xfs_setfilesize() are from bound workqueues, so I wondered why that
was and looked at the code and the setsize functions are run off of a
separate work item which is queued from the end_bio callback and I
can't tell who would be waiting for them.  Dave, what am I missing?

Thanks.

-- 
tejun

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  reply	other threads:[~2015-08-20 16:55 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20150812101204.GE17933@dhcp-13-216.nay.redhat.com>
2015-08-13  0:44 ` generic/04[89] fail on XFS due to change in writeback code [4.2-rc1 regression] Dave Chinner
2015-08-13 15:34   ` Tejun Heo
2015-08-13 19:16     ` Tejun Heo
2015-08-13 22:44   ` [PATCH block/for-linus] writeback: fix syncing of I_DIRTY_TIME inodes Tejun Heo
2015-08-14 11:14     ` Jan Kara
2015-08-14 15:14       ` Damien Wyart
2015-08-17 20:00         ` Tejun Heo
2015-08-18  5:33           ` Damien Wyart
2015-08-17 20:02       ` Tejun Heo
2015-08-18  9:16         ` Jan Kara
2015-08-18 17:47           ` Tejun Heo
2015-08-18 19:54             ` Tejun Heo
2015-08-18 21:56               ` Dave Chinner
2015-08-20  6:12                 ` Eryu Guan
2015-08-20 14:01                   ` Eryu Guan
2015-08-20 14:36                   ` Eryu Guan
2015-08-20 14:37                     ` Eryu Guan
2015-08-20 16:55                       ` Tejun Heo [this message]
2015-08-20 23:04                         ` Dave Chinner
2015-08-24 18:10                           ` Tejun Heo
2015-08-24 22:27                             ` Dave Chinner
2015-08-24 22:53                               ` Tejun Heo
2015-08-21 10:20                 ` Eryu Guan
2015-08-22  0:30                   ` Dave Chinner
2015-08-22  4:46                     ` Eryu Guan
2015-08-24  1:11                       ` Dave Chinner
2015-08-24  3:18                         ` Eryu Guan
2015-08-24  6:24                           ` Dave Chinner
2015-08-24  8:34                             ` Eryu Guan
2015-08-24  8:55                               ` Dave Chinner
2015-08-24  9:19                             ` Jan Kara
2015-08-24 14:51                               ` Tejun Heo
2015-08-24 17:11                                 ` Tejun Heo
2015-08-24 19:08                                   ` Jan Kara
2015-08-24 19:32                                     ` Tejun Heo
2015-08-24 21:09                                       ` Jan Kara
2015-08-24 21:45                                         ` Tejun Heo
2015-08-24 22:54                                           ` Tejun Heo
2015-08-24 22:57                                           ` Dave Chinner
2015-08-25 18:11     ` [PATCH v2 block/for-linus] writeback: sync_inodes_sb() must write out I_DIRTY_TIME inodes and always call wait_sb_inodes() Tejun Heo
2015-08-25 20:37       ` Jens Axboe
2015-08-26  9:00       ` Jan Kara
2015-08-13 23:24   ` generic/04[89] fail on XFS due to change in writeback code [4.2-rc1 regression] Tejun Heo
2015-08-14  6:19     ` Eryu Guan
2015-08-17 20:27       ` Tejun Heo
2015-08-18  3:57         ` Eryu Guan
2015-08-18  5:31           ` Eryu Guan

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