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Subject: Re: linux-2.6.20-rc4-mm1 Reiser4 filesystem freeze and corruption
From: Zan Lynx <zlynx@acm.org>
To: Edward Shishkin <edward@namesys.com>
Cc: Andrew Morton <akpm@osdl.org>, "Vladimir V. Saveliev" <vs@namesys.com>,
       reiserfs-list@namesys.com,
       Linux kernel mailing list <linux-kernel@vger.kernel.org>,
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On Thu, 2007-02-01 at 18:54 +0300, Edward Shishkin wrote:
[snip]
> Thanks for the dump.
>=20
> >[ 3138.456588]  [<ffffffff8033f5de>] current_atom_finish_all_fq+0x12e/0x=
280
> >[ 3138.456661]  [<ffffffff80296510>] autoremove_wake_function+0x0/0x30
> >[ 3138.456674]  [<ffffffff803350ac>] submit_wb_list+0x11c/0x130
> >[ 3138.456690]  [<ffffffff80335409>] reiser4_txn_end+0x349/0x530
> >[ 3138.456710]  [<ffffffff803355f9>] reiser4_txn_restart+0x9/0x20
> >[ 3138.456781]  [<ffffffff80335680>] force_commit_atom+0x50/0x60
> >[ 3138.456793]  [<ffffffff8034cfb1>] writepages_unix_file+0x671/0x780
> >[ 3138.456824]  [<ffffffff802590b3>] do_writepages+0x43/0x80
> >[ 3138.456838]  [<ffffffff8024dbf8>] __filemap_fdatawrite_range+0x58/0x7=
0
> >[ 3138.456914]  [<ffffffff8024e19d>] do_fsync+0x3d/0xe0
> >[ 3138.456930]  [<ffffffff802c2473>] sys_msync+0x143/0x1f0
> >[ 3138.456945]  [<ffffffff8025c11e>] system_call+0x7e/0x83
> > =20
> >
>=20
> This is waiting for IO completion, and no success because of new plugging
> policy introduced by block layer folks. The attached patch should help.
> Andrew, please apply.

OK, I have been using it with your patch for many hours and it has not
frozen up yet.  I believe that the patch did indeed fix it.

Thank you.
--=20
Zan Lynx <zlynx@acm.org>

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