From: David Sterba <dsterba@suse.cz>
To: Nikolay Borisov <nborisov@suse.com>
Cc: Josef Bacik <josef@toxicpanda.com>,
linux-btrfs@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH 4/8] btrfs: add ALLOC_CHUNK_FORCE to the flushing code
Date: Tue, 11 Dec 2018 17:47:51 +0100 [thread overview]
Message-ID: <20181211164751.GN23615@twin.jikos.cz> (raw)
In-Reply-To: <83a7b193-0763-6f7a-611c-deaf0d6c380e@suse.com>
On Tue, Dec 11, 2018 at 12:08:23PM +0200, Nikolay Borisov wrote:
>
>
> On 3.12.18 г. 17:24 ч., Josef Bacik wrote:
> > With my change to no longer take into account the global reserve for
> > metadata allocation chunks we have this side-effect for mixed block
> > group fs'es where we are no longer allocating enough chunks for the
> > data/metadata requirements. To deal with this add a ALLOC_CHUNK_FORCE
> > step to the flushing state machine. This will only get used if we've
> > already made a full loop through the flushing machinery and tried
> > committing the transaction. If we have then we can try and force a
> > chunk allocation since we likely need it to make progress. This
> > resolves the issues I was seeing with the mixed bg tests in xfstests
> > with my previous patch.
> >
> > Reviewed-by: Nikolay Borisov <nborisov@suse.com>
> > Signed-off-by: Josef Bacik <josef@toxicpanda.com>
>
> Imo this and the previous patch should be squashed into one.
I don't see why, separate patches also look good to me. One changes the
logic regarding global reserve and the other fixes behaviour regarding
mixed block groups.
Possibly, if the fix can be applied first and then the overall logic
changed, that's still 2 patches but there's no intermediate state with
the bug. As long as it's not something really disasterous or if the
"one logical thing per patch" is unnecessarily split to 2 patches, I'm
willing to take more patches. This is a bit of a grey zone so if I'm
missing something regarding the split, please let me know.
next prev parent reply other threads:[~2018-12-11 16:48 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 15:24 [PATCH 0/8][V2] Enospc cleanups and fixeS Josef Bacik
2018-12-03 15:24 ` [PATCH 1/8] btrfs: check if free bgs for commit Josef Bacik
2018-12-03 15:24 ` [PATCH 2/8] btrfs: dump block_rsv whe dumping space info Josef Bacik
2018-12-03 15:24 ` [PATCH 3/8] btrfs: don't use global rsv for chunk allocation Josef Bacik
2018-12-11 9:59 ` Nikolay Borisov
2018-12-03 15:24 ` [PATCH 4/8] btrfs: add ALLOC_CHUNK_FORCE to the flushing code Josef Bacik
2018-12-11 10:08 ` Nikolay Borisov
2018-12-11 16:47 ` David Sterba [this message]
2018-12-11 16:51 ` Nikolay Borisov
2018-12-11 19:04 ` David Sterba
2018-12-03 15:24 ` [PATCH 5/8] btrfs: don't enospc all tickets on flush failure Josef Bacik
2018-12-11 14:32 ` Nikolay Borisov
2018-12-03 15:24 ` [PATCH 6/8] btrfs: loop in inode_rsv_refill Josef Bacik
2018-12-12 16:01 ` Nikolay Borisov
2019-02-06 18:20 ` David Sterba
2019-01-30 16:41 ` David Sterba
2018-12-03 15:24 ` [PATCH 7/8] btrfs: be more explicit about allowed flush states Josef Bacik
2018-12-11 18:28 ` David Sterba
2018-12-12 8:40 ` Nikolay Borisov
2018-12-03 15:24 ` [PATCH 8/8] btrfs: reserve extra space during evict() Josef Bacik
2018-12-14 8:20 ` Nikolay Borisov
2018-12-13 14:11 ` [PATCH 0/8][V2] Enospc cleanups and fixeS David Sterba
2018-12-13 14:36 ` Nikolay Borisov
2018-12-13 14:45 ` Josef Bacik
2018-12-13 18:17 ` David Sterba
2018-12-13 18:28 ` Josef Bacik
2018-12-13 18:41 ` David Sterba
2019-02-08 16:08 ` David Sterba
-- strict thread matches above, loose matches on Subject: below --
2018-11-21 19:03 [PATCH 0/8] Enospc cleanups and fixes Josef Bacik
2018-11-21 19:03 ` [PATCH 4/8] btrfs: add ALLOC_CHUNK_FORCE to the flushing code Josef Bacik
2018-11-26 11:28 ` Nikolay Borisov
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