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Message-ID: <20150923172535.GC25218@ret.masoncoding.com> Date: Wed, 23 Sep 2015 13:25:35 -0400 From: Chris Mason <clm@...com> To: Artem Bityutskiy <dedekind1@...il.com> CC: "Theodore Ts'o" <tytso@....edu>, Tejun Heo <tj@...nel.org>, <axboe@...nel.dk>, <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>, <lizefan@...wei.com>, <cgroups@...r.kernel.org>, <hannes@...xchg.org>, <kernel-team@...com>, <adilger.kernel@...ger.ca>, <linux-ext4@...r.kernel.org> Subject: Re: [PATCH 2/2] ext4: implement cgroup writeback support On Wed, Sep 23, 2015 at 03:49:12PM +0300, Artem Bityutskiy wrote: > On Tue, 2015-07-21 at 23:56 -0400, Theodore Ts'o wrote: > > > v2: Updated for MS_CGROUPWB -> SB_I_CGROUPWB. > > > > > > Signed-off-by: Tejun Heo <tj@...nel.org> > > > Cc: "Theodore Ts'o" <tytso@....edu> > > > Cc: Andreas Dilger <adilger.kernel@...ger.ca> > > > Cc: linux-ext4@...r.kernel.org > > > > Thanks, applied. > > Hi, this patch introduces a regression - a major one, I'd say. > > Symptoms: copy a bunch of file, run sync, then run 'reboot', and after > you boot up the copied files are corrupted. So basically the user > -visible symptom is that 'sync' does not work. Hi Artem, Are you doing a hard shutdown (reboot -nf)? If you're doing a friendly shutdown, is the FS unmounting cleanly? > > I quite an effort to bisect it, but it led me to this patch. I bet it was a long bisect. Trying to see if the same patch to btrfs has similar impacts. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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