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From: Jeff Layton <jlayton@kernel.org>
To: Vivek Goyal <vgoyal@redhat.com>, Matthew Wilcox <willy@infradead.org>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-unionfs@vger.kernel.org, amir73il@gmail.com,
	sargun@sargun.me, miklos@szeredi.hu, jack@suse.cz,
	neilb@suse.com, viro@zeniv.linux.org.uk, hch@lst.de
Subject: Re: [PATCH 2/3] vfs: Add a super block operation to check for writeback errors
Date: Wed, 23 Dec 2020 07:44:10 -0500	[thread overview]
Message-ID: <6c60d0e19af9a820aae15cd3477da561115c9852.camel@kernel.org> (raw)
In-Reply-To: <20201222162509.GB3248@redhat.com>

On Tue, 2020-12-22 at 11:25 -0500, Vivek Goyal wrote:
> On Tue, Dec 22, 2020 at 04:19:00PM +0000, Matthew Wilcox wrote:
> > On Mon, Dec 21, 2020 at 02:50:54PM -0500, Vivek Goyal wrote:
> > > -	ret2 = errseq_check_and_advance(&sb->s_wb_err, &f.file->f_sb_err);
> > > +	if (sb->s_op->errseq_check_advance)
> > > +		ret2 = sb->s_op->errseq_check_advance(sb, f.file);
> > 
> > What a terrible name for an fs operation.  You don't seem to be able
> > to distinguish between semantics and implementation.  How about
> > check_error()?
> 
> check_error() sounds better. I was not very happy with the name either.
> Thought of starting with something.
> 

Maybe report_error() ?

The same error won't be reported on the next call on the same fd. I
think the important point to make here is that this error must be
reported to syncfs() or something like it once you call this.

(In hindsight, I sort of wish I had done s/serrseq_set/errseq_record/
and s/errseq_check_and_advance/errseq_report/ when I initially did this,
if only to make the API a little less dependent on the implementation.)
-- 
Jeff Layton <jlayton@kernel.org>


  reply	other threads:[~2020-12-23 12:45 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 [this message]
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
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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