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Message-ID: <4909F705.8090904@redhat.com> Date: Thu, 30 Oct 2008 13:03:49 -0500 From: Eric Sandeen <sandeen@...hat.com> To: Arthur Jones <ajones@...erbed.com> CC: "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>, "sct@...hat.com" <sct@...hat.com>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: ext3: slow symlink corruption on umount... Arthur Jones wrote: > Hi Eric, ... > > On Wed, Oct 29, 2008 at 01:36:33PM -0700, Eric Sandeen wrote: >> [...] >> I'll look into it ... > > In the cases that fail, I'm seeing bdi_write_congested() > return 2 at the top of write_cache_pages(). In the working > case, bdi_write_congested() returns 0 and the inodes are > found twice in the s_io list in generic_sync_sb_inodes, > first as i_state==7, where they are skipped, then a second > time as i_state==4, where ->writepage() is then called... > > Arthur Something is definitely racy here; in my simple testcase I get failures maybe 30-50% of the time... If I add a mark_buffer_dirty to write_end_fn, it always passes but I need to think a bit about that. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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