From: Christoph Hellwig <hch@infradead.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>, Mel Gorman <mel@csn.ul.ie>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
Chris Mason <chris.mason@oracle.com>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>
Subject: Re: [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible
Date: Tue, 15 Jun 2010 12:26:00 -0400 [thread overview]
Message-ID: <20100615162600.GA9910@infradead.org> (raw)
In-Reply-To: <20100615154516.GG28052@random.random>
On Tue, Jun 15, 2010 at 05:45:16PM +0200, Andrea Arcangeli wrote:
> On Tue, Jun 15, 2010 at 11:25:26AM -0400, Christoph Hellwig wrote:
> > hand can happen from context that already is say 4 or 6 kilobytes
> > into stack usage. And the callchain from kmalloc() into ->writepage
>
> Mel's stack trace of 5k was still not realistic as it doesn't call
> writepage there. I was just asking the 6k example vs msync.
FYI here is the most recent one that Michael Monnerie reported after he
hit it on a production machine. It's what finally prompted us to add
the check in ->writepage:
[21877.948005] BUG: scheduling while atomic: rsync/2345/0xffff8800
[21877.948005] Modules linked in: af_packet nfs lockd fscache nfs_acl auth_rpcgss sunrpc ipv6 ramzswap xvmalloc lzo_decompress lzo_compress loop dm_mod reiserfs xfs exportfs xennet xenblk cdrom
[21877.948005] Pid: 2345, comm: rsync Not tainted 2.6.31.12-0.2-xen #1
[21877.948005] Call Trace:
[21877.949649] [<ffffffff800119b9>] try_stack_unwind+0x189/0x1b0
[21877.949659] [<ffffffff8000f466>] dump_trace+0xa6/0x1e0
[21877.949666] [<ffffffff800114c4>] show_trace_log_lvl+0x64/0x90
[21877.949676] [<ffffffff80011513>] show_trace+0x23/0x40
[21877.949684] [<ffffffff8046b92c>] dump_stack+0x81/0x9e
[21877.949695] [<ffffffff8003f398>] __schedule_bug+0x78/0x90
[21877.949702] [<ffffffff8046c97c>] thread_return+0x1d7/0x3fb
[21877.949709] [<ffffffff8046cf85>] schedule_timeout+0x195/0x200
[21877.949717] [<ffffffff8046be2b>] wait_for_common+0x10b/0x230
[21877.949726] [<ffffffff8046c09b>] wait_for_completion+0x2b/0x50
[21877.949768] [<ffffffffa009e741>] xfs_buf_iowait+0x31/0x80 [xfs]
[21877.949894] [<ffffffffa009ea30>] _xfs_buf_read+0x70/0x80 [xfs]
[21877.949992] [<ffffffffa009ef8b>] xfs_buf_read_flags+0x8b/0xd0 [xfs]
[21877.950089] [<ffffffffa0091ab9>] xfs_trans_read_buf+0x1e9/0x320 [xfs]
[21877.950174] [<ffffffffa005b278>] xfs_btree_read_buf_block+0x68/0xe0 [xfs]
[21877.950232] [<ffffffffa005b99e>] xfs_btree_lookup_get_block+0x8e/0x110 [xfs]
[21877.950281] [<ffffffffa005c0af>] xfs_btree_lookup+0xdf/0x4d0 [xfs]
[21877.950329] [<ffffffffa0042b77>] xfs_alloc_lookup_eq+0x27/0x50 [xfs]
[21877.950361] [<ffffffffa0042f09>] xfs_alloc_fixup_trees+0x249/0x370 [xfs]
[21877.950397] [<ffffffffa0044c30>] xfs_alloc_ag_vextent_near+0x4e0/0x9a0 [xfs]
[21877.950432] [<ffffffffa00451f5>] xfs_alloc_ag_vextent+0x105/0x160 [xfs]
[21877.950471] [<ffffffffa0045bb4>] xfs_alloc_vextent+0x3b4/0x4b0 [xfs]
[21877.950504] [<ffffffffa0058da8>] xfs_bmbt_alloc_block+0xf8/0x210 [xfs]
[21877.950550] [<ffffffffa005e3b7>] xfs_btree_split+0xc7/0x720 [xfs]
[21877.950597] [<ffffffffa005ef8c>] xfs_btree_make_block_unfull+0x15c/0x1c0 [xfs]
[21877.950643] [<ffffffffa005f3ff>] xfs_btree_insrec+0x40f/0x5c0 [xfs]
[21877.950689] [<ffffffffa005f651>] xfs_btree_insert+0xa1/0x1b0 [xfs]
[21877.950748] [<ffffffffa005325e>] xfs_bmap_add_extent_delay_real+0x82e/0x12a0 [xfs]
[21877.950787] [<ffffffffa00540f4>] xfs_bmap_add_extent+0x424/0x450 [xfs]
[21877.950833] [<ffffffffa00573f3>] xfs_bmapi+0xda3/0x1320 [xfs]
[21877.950879] [<ffffffffa007c248>] xfs_iomap_write_allocate+0x1d8/0x3f0 [xfs]
[21877.950953] [<ffffffffa007d089>] xfs_iomap+0x2c9/0x300 [xfs]
[21877.951021] [<ffffffffa009a1b8>] xfs_map_blocks+0x38/0x60 [xfs]
[21877.951108] [<ffffffffa009b93a>] xfs_page_state_convert+0x3fa/0x720 [xfs]
[21877.951204] [<ffffffffa009bde4>] xfs_vm_writepage+0x84/0x160 [xfs]
[21877.951301] [<ffffffff800e3603>] pageout+0x143/0x2b0
[21877.951308] [<ffffffff800e514e>] shrink_page_list+0x26e/0x650
[21877.951314] [<ffffffff800e5803>] shrink_inactive_list+0x2d3/0x7c0
[21877.951320] [<ffffffff800e5d4b>] shrink_list+0x5b/0x110
[21877.951325] [<ffffffff800e5f71>] shrink_zone+0x171/0x250
[21877.951330] [<ffffffff800e60d3>] shrink_zones+0x83/0x120
[21877.951336] [<ffffffff800e620e>] do_try_to_free_pages+0x9e/0x380
[21877.951342] [<ffffffff800e6607>] try_to_free_pages+0x77/0xa0
[21877.951349] [<ffffffff800dbfa3>] __alloc_pages_slowpath+0x2d3/0x5c0
[21877.951355] [<ffffffff800dc3e1>] __alloc_pages_nodemask+0x151/0x160
[21877.951362] [<ffffffff800d44b7>] __page_cache_alloc+0x27/0x50
[21877.951368] [<ffffffff800d68ca>] grab_cache_page_write_begin+0x9a/0xe0
[21877.951376] [<ffffffff8014bdfe>] block_write_begin+0xae/0x120
[21877.951396] [<ffffffffa009ac24>] xfs_vm_write_begin+0x34/0x50 [xfs]
[21877.951482] [<ffffffff800d4b31>] generic_perform_write+0xc1/0x1f0
[21877.951489] [<ffffffff800d5d00>] generic_file_buffered_write+0x90/0x160
[21877.951512] [<ffffffffa00a4711>] xfs_write+0x521/0xb60 [xfs]
[21877.951624] [<ffffffffa009fb80>] xfs_file_aio_write+0x70/0xa0 [xfs]
[21877.951711] [<ffffffff80118c42>] do_sync_write+0x102/0x160
[21877.951718] [<ffffffff80118fc8>] vfs_write+0xd8/0x1c0
[21877.951723] [<ffffffff8011995b>] sys_write+0x5b/0xa0
[21877.951729] [<ffffffff8000c868>] system_call_fastpath+0x16/0x1b
[21877.951736] [<00007fc41b0fab10>] 0x7fc41b0fab10
[21877.951750] BUG: unable to handle kernel paging request at 0000000108743280
[21877.951755] IP: [<ffffffff80034832>] dequeue_task+0x72/0x110
[21877.951766] PGD 31c6f067 PUD 0
[21877.951770] Thread overran stack, or stack corrupted
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>, Mel Gorman <mel@csn.ul.ie>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
Chris Mason <chris.mason@oracle.com>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>
Subject: Re: [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible
Date: Tue, 15 Jun 2010 12:26:00 -0400 [thread overview]
Message-ID: <20100615162600.GA9910@infradead.org> (raw)
In-Reply-To: <20100615154516.GG28052@random.random>
On Tue, Jun 15, 2010 at 05:45:16PM +0200, Andrea Arcangeli wrote:
> On Tue, Jun 15, 2010 at 11:25:26AM -0400, Christoph Hellwig wrote:
> > hand can happen from context that already is say 4 or 6 kilobytes
> > into stack usage. And the callchain from kmalloc() into ->writepage
>
> Mel's stack trace of 5k was still not realistic as it doesn't call
> writepage there. I was just asking the 6k example vs msync.
FYI here is the most recent one that Michael Monnerie reported after he
hit it on a production machine. It's what finally prompted us to add
the check in ->writepage:
[21877.948005] BUG: scheduling while atomic: rsync/2345/0xffff8800
[21877.948005] Modules linked in: af_packet nfs lockd fscache nfs_acl auth_rpcgss sunrpc ipv6 ramzswap xvmalloc lzo_decompress lzo_compress loop dm_mod reiserfs xfs exportfs xennet xenblk cdrom
[21877.948005] Pid: 2345, comm: rsync Not tainted 2.6.31.12-0.2-xen #1
[21877.948005] Call Trace:
[21877.949649] [<ffffffff800119b9>] try_stack_unwind+0x189/0x1b0
[21877.949659] [<ffffffff8000f466>] dump_trace+0xa6/0x1e0
[21877.949666] [<ffffffff800114c4>] show_trace_log_lvl+0x64/0x90
[21877.949676] [<ffffffff80011513>] show_trace+0x23/0x40
[21877.949684] [<ffffffff8046b92c>] dump_stack+0x81/0x9e
[21877.949695] [<ffffffff8003f398>] __schedule_bug+0x78/0x90
[21877.949702] [<ffffffff8046c97c>] thread_return+0x1d7/0x3fb
[21877.949709] [<ffffffff8046cf85>] schedule_timeout+0x195/0x200
[21877.949717] [<ffffffff8046be2b>] wait_for_common+0x10b/0x230
[21877.949726] [<ffffffff8046c09b>] wait_for_completion+0x2b/0x50
[21877.949768] [<ffffffffa009e741>] xfs_buf_iowait+0x31/0x80 [xfs]
[21877.949894] [<ffffffffa009ea30>] _xfs_buf_read+0x70/0x80 [xfs]
[21877.949992] [<ffffffffa009ef8b>] xfs_buf_read_flags+0x8b/0xd0 [xfs]
[21877.950089] [<ffffffffa0091ab9>] xfs_trans_read_buf+0x1e9/0x320 [xfs]
[21877.950174] [<ffffffffa005b278>] xfs_btree_read_buf_block+0x68/0xe0 [xfs]
[21877.950232] [<ffffffffa005b99e>] xfs_btree_lookup_get_block+0x8e/0x110 [xfs]
[21877.950281] [<ffffffffa005c0af>] xfs_btree_lookup+0xdf/0x4d0 [xfs]
[21877.950329] [<ffffffffa0042b77>] xfs_alloc_lookup_eq+0x27/0x50 [xfs]
[21877.950361] [<ffffffffa0042f09>] xfs_alloc_fixup_trees+0x249/0x370 [xfs]
[21877.950397] [<ffffffffa0044c30>] xfs_alloc_ag_vextent_near+0x4e0/0x9a0 [xfs]
[21877.950432] [<ffffffffa00451f5>] xfs_alloc_ag_vextent+0x105/0x160 [xfs]
[21877.950471] [<ffffffffa0045bb4>] xfs_alloc_vextent+0x3b4/0x4b0 [xfs]
[21877.950504] [<ffffffffa0058da8>] xfs_bmbt_alloc_block+0xf8/0x210 [xfs]
[21877.950550] [<ffffffffa005e3b7>] xfs_btree_split+0xc7/0x720 [xfs]
[21877.950597] [<ffffffffa005ef8c>] xfs_btree_make_block_unfull+0x15c/0x1c0 [xfs]
[21877.950643] [<ffffffffa005f3ff>] xfs_btree_insrec+0x40f/0x5c0 [xfs]
[21877.950689] [<ffffffffa005f651>] xfs_btree_insert+0xa1/0x1b0 [xfs]
[21877.950748] [<ffffffffa005325e>] xfs_bmap_add_extent_delay_real+0x82e/0x12a0 [xfs]
[21877.950787] [<ffffffffa00540f4>] xfs_bmap_add_extent+0x424/0x450 [xfs]
[21877.950833] [<ffffffffa00573f3>] xfs_bmapi+0xda3/0x1320 [xfs]
[21877.950879] [<ffffffffa007c248>] xfs_iomap_write_allocate+0x1d8/0x3f0 [xfs]
[21877.950953] [<ffffffffa007d089>] xfs_iomap+0x2c9/0x300 [xfs]
[21877.951021] [<ffffffffa009a1b8>] xfs_map_blocks+0x38/0x60 [xfs]
[21877.951108] [<ffffffffa009b93a>] xfs_page_state_convert+0x3fa/0x720 [xfs]
[21877.951204] [<ffffffffa009bde4>] xfs_vm_writepage+0x84/0x160 [xfs]
[21877.951301] [<ffffffff800e3603>] pageout+0x143/0x2b0
[21877.951308] [<ffffffff800e514e>] shrink_page_list+0x26e/0x650
[21877.951314] [<ffffffff800e5803>] shrink_inactive_list+0x2d3/0x7c0
[21877.951320] [<ffffffff800e5d4b>] shrink_list+0x5b/0x110
[21877.951325] [<ffffffff800e5f71>] shrink_zone+0x171/0x250
[21877.951330] [<ffffffff800e60d3>] shrink_zones+0x83/0x120
[21877.951336] [<ffffffff800e620e>] do_try_to_free_pages+0x9e/0x380
[21877.951342] [<ffffffff800e6607>] try_to_free_pages+0x77/0xa0
[21877.951349] [<ffffffff800dbfa3>] __alloc_pages_slowpath+0x2d3/0x5c0
[21877.951355] [<ffffffff800dc3e1>] __alloc_pages_nodemask+0x151/0x160
[21877.951362] [<ffffffff800d44b7>] __page_cache_alloc+0x27/0x50
[21877.951368] [<ffffffff800d68ca>] grab_cache_page_write_begin+0x9a/0xe0
[21877.951376] [<ffffffff8014bdfe>] block_write_begin+0xae/0x120
[21877.951396] [<ffffffffa009ac24>] xfs_vm_write_begin+0x34/0x50 [xfs]
[21877.951482] [<ffffffff800d4b31>] generic_perform_write+0xc1/0x1f0
[21877.951489] [<ffffffff800d5d00>] generic_file_buffered_write+0x90/0x160
[21877.951512] [<ffffffffa00a4711>] xfs_write+0x521/0xb60 [xfs]
[21877.951624] [<ffffffffa009fb80>] xfs_file_aio_write+0x70/0xa0 [xfs]
[21877.951711] [<ffffffff80118c42>] do_sync_write+0x102/0x160
[21877.951718] [<ffffffff80118fc8>] vfs_write+0xd8/0x1c0
[21877.951723] [<ffffffff8011995b>] sys_write+0x5b/0xa0
[21877.951729] [<ffffffff8000c868>] system_call_fastpath+0x16/0x1b
[21877.951736] [<00007fc41b0fab10>] 0x7fc41b0fab10
[21877.951750] BUG: unable to handle kernel paging request at 0000000108743280
[21877.951755] IP: [<ffffffff80034832>] dequeue_task+0x72/0x110
[21877.951766] PGD 31c6f067 PUD 0
[21877.951770] Thread overran stack, or stack corrupted
--
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next prev parent reply other threads:[~2010-06-15 16:26 UTC|newest]
Thread overview: 134+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-08 9:02 [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-08 9:02 ` [PATCH 1/6] tracing, vmscan: Add trace events for kswapd wakeup, sleeping and direct reclaim Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-08 9:02 ` [PATCH 2/6] tracing, vmscan: Add trace events for LRU page isolation Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-08 9:02 ` [PATCH 3/6] tracing, vmscan: Add trace event when a page is written Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-08 9:02 ` [PATCH 4/6] tracing, vmscan: Add a postprocessing script for reclaim-related ftrace events Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-08 9:02 ` [PATCH 5/6] vmscan: Write out ranges of pages contiguous to the inode where possible Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-11 6:10 ` Andrew Morton
2010-06-11 6:10 ` Andrew Morton
2010-06-11 12:49 ` Mel Gorman
2010-06-11 12:49 ` Mel Gorman
2010-06-11 19:07 ` Andrew Morton
2010-06-11 19:07 ` Andrew Morton
2010-06-11 20:44 ` Mel Gorman
2010-06-11 20:44 ` Mel Gorman
2010-06-11 21:33 ` Andrew Morton
2010-06-11 21:33 ` Andrew Morton
2010-06-12 0:17 ` Mel Gorman
2010-06-12 0:17 ` Mel Gorman
2010-06-11 16:27 ` Christoph Hellwig
2010-06-11 16:27 ` Christoph Hellwig
2010-06-08 9:02 ` [PATCH 6/6] vmscan: Do not writeback pages in direct reclaim Mel Gorman
2010-06-08 9:02 ` Mel Gorman
2010-06-11 6:17 ` Andrew Morton
2010-06-11 6:17 ` Andrew Morton
2010-06-11 12:54 ` Mel Gorman
2010-06-11 12:54 ` Mel Gorman
2010-06-11 16:25 ` Christoph Hellwig
2010-06-11 16:25 ` Christoph Hellwig
2010-06-11 17:43 ` Andrew Morton
2010-06-11 17:43 ` Andrew Morton
2010-06-11 17:49 ` Christoph Hellwig
2010-06-11 17:49 ` Christoph Hellwig
2010-06-11 18:13 ` Mel Gorman
2010-06-11 18:13 ` Mel Gorman
2010-06-08 9:08 ` [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible Christoph Hellwig
2010-06-08 9:08 ` Christoph Hellwig
2010-06-08 9:28 ` Mel Gorman
2010-06-08 9:28 ` Mel Gorman
2010-06-11 16:29 ` Christoph Hellwig
2010-06-11 16:29 ` Christoph Hellwig
2010-06-11 18:15 ` Mel Gorman
2010-06-11 18:15 ` Mel Gorman
2010-06-11 19:12 ` Chris Mason
2010-06-11 19:12 ` Chris Mason
2010-06-09 2:52 ` KAMEZAWA Hiroyuki
2010-06-09 2:52 ` KAMEZAWA Hiroyuki
2010-06-09 9:52 ` Mel Gorman
2010-06-09 9:52 ` Mel Gorman
2010-06-10 0:38 ` KAMEZAWA Hiroyuki
2010-06-10 0:38 ` KAMEZAWA Hiroyuki
2010-06-10 1:10 ` Mel Gorman
2010-06-10 1:10 ` Mel Gorman
2010-06-10 1:29 ` KAMEZAWA Hiroyuki
2010-06-10 1:29 ` KAMEZAWA Hiroyuki
2010-06-11 5:57 ` Andrew Morton
2010-06-11 5:57 ` Andrew Morton
2010-06-11 12:33 ` Mel Gorman
2010-06-11 12:33 ` Mel Gorman
2010-06-11 16:30 ` Christoph Hellwig
2010-06-11 16:30 ` Christoph Hellwig
2010-06-11 18:17 ` Mel Gorman
2010-06-11 18:17 ` Mel Gorman
2010-06-15 14:00 ` Andrea Arcangeli
2010-06-15 14:00 ` Andrea Arcangeli
2010-06-15 14:11 ` Christoph Hellwig
2010-06-15 14:11 ` Christoph Hellwig
2010-06-15 14:22 ` Andrea Arcangeli
2010-06-15 14:22 ` Andrea Arcangeli
2010-06-15 14:43 ` Christoph Hellwig
2010-06-15 14:43 ` Christoph Hellwig
2010-06-15 15:08 ` Andrea Arcangeli
2010-06-15 15:08 ` Andrea Arcangeli
2010-06-15 15:25 ` Christoph Hellwig
2010-06-15 15:25 ` Christoph Hellwig
2010-06-15 15:45 ` Andrea Arcangeli
2010-06-15 15:45 ` Andrea Arcangeli
2010-06-15 16:26 ` Christoph Hellwig [this message]
2010-06-15 16:26 ` Christoph Hellwig
2010-06-15 16:31 ` Andrea Arcangeli
2010-06-15 16:31 ` Andrea Arcangeli
2010-06-15 16:49 ` Rik van Riel
2010-06-15 16:49 ` Rik van Riel
2010-06-15 16:54 ` Christoph Hellwig
2010-06-15 16:54 ` Christoph Hellwig
2010-06-15 19:13 ` Rik van Riel
2010-06-15 19:13 ` Rik van Riel
2010-06-15 19:17 ` Christoph Hellwig
2010-06-15 19:17 ` Christoph Hellwig
2010-06-15 19:44 ` Chris Mason
2010-06-15 19:44 ` Chris Mason
2010-06-16 7:57 ` Nick Piggin
2010-06-16 7:57 ` Nick Piggin
2010-06-16 16:59 ` Rik van Riel
2010-06-16 16:59 ` Rik van Riel
2010-06-16 17:04 ` Andrea Arcangeli
2010-06-16 17:04 ` Andrea Arcangeli
2010-06-15 16:54 ` Nick Piggin
2010-06-15 16:54 ` Nick Piggin
2010-06-15 15:38 ` Mel Gorman
2010-06-15 15:38 ` Mel Gorman
2010-06-15 16:14 ` Andrea Arcangeli
2010-06-15 16:14 ` Andrea Arcangeli
2010-06-15 16:22 ` Christoph Hellwig
2010-06-15 16:22 ` Christoph Hellwig
2010-06-15 16:30 ` Mel Gorman
2010-06-15 16:30 ` Mel Gorman
2010-06-15 16:34 ` Mel Gorman
2010-06-15 16:34 ` Mel Gorman
2010-06-15 16:54 ` Andrea Arcangeli
2010-06-15 16:54 ` Andrea Arcangeli
2010-06-15 16:35 ` Christoph Hellwig
2010-06-15 16:35 ` Christoph Hellwig
2010-06-15 16:37 ` Andrea Arcangeli
2010-06-15 16:37 ` Andrea Arcangeli
2010-06-15 17:43 ` Christoph Hellwig
2010-06-15 17:43 ` Christoph Hellwig
2010-06-15 16:45 ` Christoph Hellwig
2010-06-15 16:45 ` Christoph Hellwig
2010-06-15 14:51 ` Mel Gorman
2010-06-15 14:51 ` Mel Gorman
2010-06-15 14:55 ` Rik van Riel
2010-06-15 14:55 ` Rik van Riel
2010-06-15 15:08 ` Nick Piggin
2010-06-15 15:08 ` Nick Piggin
2010-06-15 15:10 ` Mel Gorman
2010-06-15 15:10 ` Mel Gorman
2010-06-15 16:28 ` Andrea Arcangeli
2010-06-15 16:28 ` Andrea Arcangeli
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