linux-kernel - Re: [PATCH 3/3][reiser4] dont get radix-tree dirty tagging out of sync

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Date:	Tue, 12 Aug 2008 10:52:53 -0400
From:	"Ryan Hope" <rmh3093@...il.com>
To:	"Nick Piggin" <nickpiggin@...oo.com.au>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Edward Shishkin" <edward.shishkin@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Reiserfs mailing list" <reiserfs-devel@...r.kernel.org>
Subject: Re: [PATCH 3/3][reiser4] dont get radix-tree dirty tagging out of sync

On Tue, Aug 12, 2008 at 2:00 AM, Nick Piggin <nickpiggin@...oo.com.au> wrote:
> On Tuesday 12 August 2008 14:12, Ryan Hope wrote:
>> I tried just using __set_page_dirty_nobuffers but that caused issues
>> with ext3/ext4 (i can send a bug trace later if needed).
>>
>>                                 __inc_bdi_stat(mapping->backing_dev_info,
>>                                                 BDI_RECLAIMABLE);
>>                                 task_io_account_write(PAGE_CACHE_SIZE);
>>
>> ^^^ the above code in __set_page_dirty_nobuffers causes an issue with
>> do_writepages in ext3/4 when I use something like the code below:
>>
>> int reiser4_set_page_dirty_internal(struct page *page)
>> {
>>      return __set_page_dirty_nobuffers(page);
>> }
>
> Hmm, it causes issues in ext3/4 even though it doesn't change any
> code executed by ext3/4? Yes, if you could send a trace...
>

Pid: 2620, comm: bonnie Not tainted 2.6.27-rc2-zen1 #1
 [<c026d729>] do_writepages+0x49/0x50
 [<c02dc830>] ext3_write_inode+0x0/0x40
 [<c02dc860>] ext3_write_inode+0x30/0x40
 [<c02ad3a2>] __writeback_single_inode+0x282/0x390
 [<c02ad9d4>] generic_sync_sb_inodes+0x304/0x3a0
 [<f9b9b234>] reiser4_sync_inodes+0x54/0x130 [reiser4]
 [<c02ad940>] generic_sync_sb_inodes+0x270/0x3a0
 [<c02adc64>] writeback_inodes+0x44/0xd0
 [<c026d0d0>] balance_dirty_pages_ratelimited_nr+0x230/0x370
 [<f9b79a5c>] reiser4_txn_end+0x4ec/0xae0 [reiser4]
 [<f9bc95ca>] balance_dirty_page_cluster+0x10a/0x1b0 [reiser4]
 [<f9bd17a0>] write_cryptcompress+0x610/0xdf0 [reiser4]
 [<f9bc2e76>] reiser4_write_careful+0xb6/0x880 [reiser4]
 [<c021c3ae>] update_curr+0x4e/0x70
 [<c02214c2>] task_tick_fair+0x32/0x90
 [<c023cf57>] hrtimer_forward+0xf7/0x150
 [<c0240523>] getnstimeofday+0x43/0xf0
 [<c0243885>] clockevents_program_event+0xa5/0x160
 [<c022f746>] run_timer_softirq+0x146/0x1c0
 [<c02449ca>] tick_program_event+0x3a/0x70
 [<c034a74c>] security_file_permission+0xc/0x10
 [<c028dcca>] rw_verify_area+0x4a/0xc0
 [<f9bc2dc0>] reiser4_write_careful+0x0/0x880 [reiser4]
 [<c028e1a0>] vfs_write+0xa0/0x140
 [<c028e311>] sys_write+0x41/0x80
 [<c020330d>] sysenter_do_call+0x12/0x25
 =======================
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