From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 937D36B01D7 for ; Wed, 26 May 2010 07:40:26 -0400 (EDT) Date: Wed, 26 May 2010 13:40:19 +0200 From: Christoph Hellwig Subject: Re: writeback hang in current mainline Message-ID: <20100526114018.GA30107@lst.de> References: <20100526111326.GA28541@lst.de> <20100526112125.GJ23411@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100526112125.GJ23411@kernel.dk> Sender: owner-linux-mm@kvack.org To: Jens Axboe Cc: Christoph Hellwig , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org List-ID: 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] [] ? printk+0x18/0x1a [ 178.267597] [] warn_slowpath_common+0x6d/0xa0 [ 178.269296] [] ? writeback_inodes_wb+0x423/0x440 [ 178.271348] [] ? writeback_inodes_wb+0x423/0x440 [ 178.273121] [] warn_slowpath_null+0x15/0x20 [ 178.274681] [] writeback_inodes_wb+0x423/0x440 [ 178.276390] [] wb_writeback+0x101/0x1b0 [ 178.277846] [] ? __call_rcu+0x99/0x130 [ 178.279287] [] ? call_rcu+0x8/0x10 [ 178.281110] [] ? wb_clear_pending+0x7a/0xa0 [ 178.282673] [] wb_do_writeback+0xcf/0x1a0 [ 178.284239] [] ? wb_do_writeback+0x20/0x1a0 [ 178.285823] [] bdi_writeback_task+0x2a/0x90 [ 178.287371] [] ? bdi_start_fn+0x0/0xb0 [ 178.288992] [] bdi_start_fn+0x58/0xb0 [ 178.290823] [] ? bdi_start_fn+0x0/0xb0 [ 178.292378] [] kthread+0x6c/0x80 [ 178.293711] [] ? kthread+0x0/0x80 [ 178.295073] [] kernel_thread_helper+0x6/0x1c [ 178.296753] ---[ end trace a7919e7f17c0a80f ]--- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org