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From: Amir Goldstein <amir73il@gmail.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>,
	Sargun Dhillon <sargun@sargun.me>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	overlayfs <linux-unionfs@vger.kernel.org>,
	Jeff Layton <jlayton@kernel.org>,
	Miklos Szeredi <miklos@szeredi.hu>, Jan Kara <jack@suse.cz>,
	NeilBrown <neilb@suse.com>, Al Viro <viro@zeniv.linux.org.uk>,
	Christoph Hellwig <hch@lst.de>,
	Chengguang Xu <cgxu519@mykernel.net>
Subject: Re: [PATCH 3/3] overlayfs: Report writeback errors on upper
Date: Mon, 4 Jan 2021 17:22:07 +0200	[thread overview]
Message-ID: <CAOQ4uxgiC5Wm+QqD+vbmzkFvEqG6yvKYe_4sR7ZUVfu-=Ys9oQ@mail.gmail.com> (raw)
In-Reply-To: <20210104151424.GA63879@redhat.com>

> > Since Jeff's patch is minimal, I think that it should be the fix applied
> > first and proposed for stable (with adaptations for non-volatile overlay).
>
> Does stable fix has to be same as mainline fix. IOW, I think atleast in
> mainline we should first fix it the right way and then think how to fix
> it for stable. If fixes taken in mainline are not realistic for stable,
> can we push a different small fix just for stable?

We can do a lot of things.
But if we are able to create a series with minimal (and most critical) fixes
followed by other fixes, it would be easier for everyone involved.

>
> IOW, because we have to push a fix in stable, should not determine
> what should be problem solution for mainline, IMHO.
>

I find in this case there is a correlation between the simplest fix and the
most relevant fix for stable.

> The porblem I have with Jeff's fix is that its only works for volatile
> mounts. While I prefer a solution where syncfs() is fixed both for
> volatile as well as non-volatile mount and then there is less confusion.
>

I proposed a variation on Jeff's patch that covers both cases.
Sargun is going to work on it.

Thanks,
Amir.

  reply	other threads:[~2021-01-04 15:23 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-21 19:50 [RFC PATCH 0/3][v3] vfs, overlayfs: Fix syncfs() to return correct errors Vivek Goyal
2020-12-21 19:50 ` [PATCH 1/3] vfs: Do not ignore return code from s_op->sync_fs Vivek Goyal
2020-12-22  1:23   ` NeilBrown
2020-12-22 15:17     ` Vivek Goyal
2020-12-21 19:50 ` [PATCH 2/3] vfs: Add a super block operation to check for writeback errors Vivek Goyal
2020-12-22 16:19   ` Matthew Wilcox
2020-12-22 16:25     ` Vivek Goyal
2020-12-23 12:44       ` Jeff Layton
2020-12-23 12:48   ` Jeff Layton
2021-01-04 19:41     ` Vivek Goyal
2020-12-21 19:50 ` [PATCH 3/3] overlayfs: Report writeback errors on upper Vivek Goyal
2020-12-22 16:20   ` Matthew Wilcox
2020-12-22 16:29     ` Vivek Goyal
2020-12-22 17:46       ` Matthew Wilcox
2020-12-22 17:55         ` Vivek Goyal
2020-12-23 12:53           ` Jeff Layton
2020-12-23 18:20   ` Sargun Dhillon
2020-12-23 18:50     ` Matthew Wilcox
2020-12-23 19:29       ` Sargun Dhillon
2020-12-23 20:07         ` Matthew Wilcox
2020-12-23 20:21           ` Sargun Dhillon
2020-12-23 20:44             ` Matthew Wilcox
2020-12-24  9:32               ` Amir Goldstein
2020-12-24 10:12                 ` Sargun Dhillon
2020-12-24 12:13                 ` Matthew Wilcox
2020-12-25  6:50                   ` Amir Goldstein
2020-12-28 13:25                     ` Jeff Layton
2020-12-28 15:51                       ` Amir Goldstein
2021-01-04 15:51                         ` Vivek Goyal
2020-12-28 15:56                       ` Matthew Wilcox
2020-12-28 17:26                         ` Jeff Layton
2020-12-28 19:25                           ` Sargun Dhillon
2020-12-28 19:37                           ` Amir Goldstein
2020-12-28 20:48                             ` Matthew Wilcox
2021-01-02 13:25                               ` Jeff Layton
2021-01-04 16:59                         ` Vivek Goyal
2021-01-04 15:14                 ` Vivek Goyal
2021-01-04 15:22                   ` Amir Goldstein [this message]
2021-01-04 15:40                     ` Vivek Goyal
2021-01-04 21:42                       ` Amir Goldstein
2021-01-04 22:44                         ` Vivek Goyal
2021-01-05  7:11                           ` Amir Goldstein
2021-01-05 16:26                             ` Vivek Goyal
2021-01-05 16:57                               ` Amir Goldstein
2020-12-23 19:00     ` Jeff Layton
2021-01-04 20:00     ` Vivek Goyal

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