linux-kernel - Re: [PATCH v2] btrfs: Avoid calling btrfs_get_chunk

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Date:   Fri, 29 Jan 2021 20:42:08 +0100
From:   David Sterba <dsterba@...e.cz>
To:     Michal Rostecki <mrostecki@...e.de>
Cc:     dsterba@...e.cz, Josef Bacik <josef@...icpanda.com>,
        Chris Mason <clm@...com>, David Sterba <dsterba@...e.com>,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Michal Rostecki <mrostecki@...e.com>
Subject: Re: [PATCH v2] btrfs: Avoid calling btrfs_get_chunk_map() twice

On Fri, Jan 29, 2021 at 07:02:41PM +0000, Michal Rostecki wrote:
> On Fri, Jan 29, 2021 at 06:47:53PM +0100, David Sterba wrote:
> > On Fri, Jan 29, 2021 at 05:15:21PM +0000, Michal Rostecki wrote:
> > > On Fri, Jan 29, 2021 at 11:22:48AM -0500, Josef Bacik wrote:
> > > > On 1/27/21 8:57 AM, Michal Rostecki wrote:
> > > > it happens when you run btrfs/060.  Please make sure to run xfstests against
> > > > patches before you submit them upstream.  Thanks,
> > > > 
> > > > Josef
> > > 
> > > Umm... I ran the xftests against v1 patch and didn't get that panic.
> > 
> > It could have been caused by my fixups to v2 and I can reproduce the
> > crash now too. I can't see any difference besides the u64/int switch and
> > the 'goto out' removal in btrfs_bio_fits_in_stripe.
> 
> I was able to fix the issue by the following diff. I will send it as the
> patch after confirming that all fstests are passing.

Thanks, can't reproduce the crash with that at least on test btrfs/060.