From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: writeback hang in current mainline
Date: Wed, 26 May 2010 13:40:19 +0200 [thread overview]
Message-ID: <20100526114018.GA30107@lst.de> (raw)
In-Reply-To: <20100526112125.GJ23411@kernel.dk>
On Wed, May 26, 2010 at 01:21:25PM +0200, Jens Axboe wrote:
> Not good, can you see if reverting 7c8a3554 makes it go away?
Reverting back to the revision before 7c8a3554 gives me lots of warnings ala:
[ 178.253431] ------------[ cut here ]------------
[ 178.256845] WARNING: at
/home/hch/work/linux-2.6/fs/fs-writeback.c:596
writeback_inodes_wb+0x423/0x440()
[ 178.259995] Hardware name: Bochs
[ 178.261270] Modules linked in:
[ 178.262508] Pid: 2298, comm: flush-253:16 Tainted: G W
2.6.34-rc5 #121
[ 178.265199] Call Trace:
[ 178.266210] [<c08d86ca>] ? printk+0x18/0x1a
[ 178.267597] [<c0162d0d>] warn_slowpath_common+0x6d/0xa0
[ 178.269296] [<c0216ff3>] ? writeback_inodes_wb+0x423/0x440
[ 178.271348] [<c0216ff3>] ? writeback_inodes_wb+0x423/0x440
[ 178.273121] [<c0162d55>] warn_slowpath_null+0x15/0x20
[ 178.274681] [<c0216ff3>] writeback_inodes_wb+0x423/0x440
[ 178.276390] [<c0217111>] wb_writeback+0x101/0x1b0
[ 178.277846] [<c01a9a79>] ? __call_rcu+0x99/0x130
[ 178.279287] [<c01a9b38>] ? call_rcu+0x8/0x10
[ 178.281110] [<c02161fa>] ? wb_clear_pending+0x7a/0xa0
[ 178.282673] [<c021728f>] wb_do_writeback+0xcf/0x1a0
[ 178.284239] [<c02171e0>] ? wb_do_writeback+0x20/0x1a0
[ 178.285823] [<c021738a>] bdi_writeback_task+0x2a/0x90
[ 178.287371] [<c01dca90>] ? bdi_start_fn+0x0/0xb0
[ 178.288992] [<c01dcae8>] bdi_start_fn+0x58/0xb0
[ 178.290823] [<c01dca90>] ? bdi_start_fn+0x0/0xb0
[ 178.292378] [<c017dc7c>] kthread+0x6c/0x80
[ 178.293711] [<c017dc10>] ? kthread+0x0/0x80
[ 178.295073] [<c013023a>] kernel_thread_helper+0x6/0x1c
[ 178.296753] ---[ end trace a7919e7f17c0a80f ]---
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next prev parent reply other threads:[~2010-05-26 11:40 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-26 11:13 writeback hang in current mainline Christoph Hellwig
2010-05-26 11:13 ` Christoph Hellwig
2010-05-26 11:21 ` Jens Axboe
2010-05-26 11:21 ` Jens Axboe
2010-05-26 11:40 ` Christoph Hellwig [this message]
2010-05-26 11:49 ` Jens Axboe
2010-05-26 11:49 ` Jens Axboe
2010-05-26 12:08 ` Christoph Hellwig
2010-05-26 12:08 ` Christoph Hellwig
2010-05-26 12:21 ` Jens Axboe
2010-05-26 12:21 ` Jens Axboe
2010-05-26 12:45 ` Christoph Hellwig
2010-05-26 12:56 ` Jens Axboe
2010-05-26 12:56 ` Jens Axboe
2010-05-26 13:42 ` Christoph Hellwig
2010-05-26 13:42 ` Christoph Hellwig
2010-05-26 13:44 ` Jens Axboe
2010-05-26 13:44 ` Jens Axboe
2010-05-26 13:45 ` Jens Axboe
2010-05-26 13:56 ` Christoph Hellwig
2010-05-26 17:18 ` Jens Axboe
2010-05-26 17:18 ` Jens Axboe
2010-05-26 17:43 ` Christoph Hellwig
2010-05-26 17:43 ` Christoph Hellwig
2010-05-26 17:47 ` Jens Axboe
2010-05-26 17:47 ` Jens Axboe
2010-05-26 19:18 ` Christoph Hellwig
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